swadhin.ai

Guardrail Leaderboard

Tools are ranked inside their own form factor and never against another, so there are 4 tables and no combined order. The top scores are 79 for an SDK, 72 for a proxy, 44 for an edge firewall, and 58 for a managed cloud gateway, as of September 2026. The board covers 15 guardrails over 23 documented features. Of the 345 cells, 132 are documented, 69 are unclear and 114 are not documented, and every one links the page it was checked against. A mark is what a vendor documents, not what a product does. Detection accuracy is out of scope, because no independent machine-readable benchmark exists for this category. Last change 17 September 2026.

Documented capability, by form factor

15 tools · 345 cells · last verified 17 September 2026

A tick is a page in the vendor’s own documentation that shows the feature. A cross is a page that does not. A question mark is a feature the documentation leaves unclear. Only a tick counts, and only 14 of the 23 columns reach the score: operational and compliance are there to read, not to do arithmetic. Open any mark to see the page it was checked against. The jailbreak column answers two of the audit's questions at once: a tool that documents either kind documents it.

View
Weights

Every figure was checked against its source on 17 September 2026. Move a weight and the order moves with it.

Matrix

Every feature of every tool, with the page each mark was checked against.

SDK, in-process

5 tools · ranked only against each other

Runs inside the application process. Documentation read 16 September 2026; every link, star count and corporate fact re-checked 17 September 2026. A rank here is a rank within this form factor and nothing wider.

What the columns mean
Rank
Where a tool sits inside its own form factor, and nowhere else. Two tools that round to the same score are ordered by GitHub stars, then by fewest unclear cells, then by name, so the score is the finding and the rank is the row's position.
Tool
The product, linked to the documentation root the audit searched. Beneath it, who publishes it, and the repository's star count where it is open source. A count struck through is an archived repository.
Score
The weighted mean of documented cells across attack coverage and integration, scaled to 100. Nothing else reaches it. Move the weights above the table and every score and every rank moves with them.
Evidence
Whether a benchmark of the version that ships has been published, and by whom. It is not part of the score. Beneath it, what each scored group contributed.
Direct injection
Direct prompt injection detection (user turn)
Indirect injection
Indirect prompt injection detection (RAG documents, tool outputs)
Jailbreak
Jailbreak detection, of either kind. Documented when the tool documents either a single-turn detector, which catches a prompt bypassing the model's safety training (DAN, role-play), or a multi-turn one, which carries state across turns.
PII
PII detection or redaction
Secrets
Secrets and credential leakage detection
DoS / token flooding
DoS, token-flooding or rate-abuse protection
Tool-call inspection
Tool-call or function-call payload inspection
Output moderation
Output-side moderation (response scanning)
Schema validation
JSON or structured-output schema validation
Policy language
Custom policy language
LiteLLM hook
Native LiteLLM hook or integration
OpenAI-compatible proxy
OpenAI-compatible drop-in proxy mode
Self-host
Self-hosted, VPC or on-prem deployment
Streaming
Streaming response inspection
Latency published
Published latency figure
Pricing
Pricing model, not scored
License
Open-source licence, not scored
SOC 2 Type II
SOC 2 Type II
ISO 27001
ISO 27001
ISO 42001
ISO 42001
FedRAMP
FedRAMP
Third-party audit
Third-party audit, red-team report or peer review of the product
Benchmark methodology
Vendor benchmark methodology, with dataset, false-positive rate and detection all disclosed
SDK, in-process guardrail tools, ranked on documented attack coverage and integration. Every mark links the page it was checked against.
Attack coverage8 scoredIntegration6 scoredOperationalnot scoredVerification and compliancenot scored
RankToolScoreEvidenceDirect injectionIndirect injectionJailbreakPIISecretsDoS / token floodingTool-call inspectionOutput moderationSchema validationPolicy languageLiteLLM hookOpenAI-compatible proxySelf-hostStreamingLatency publishedPricingLicenseSOC 2 Type IIISO 27001ISO 42001FedRAMPThird-party auditBenchmark methodology
1NeMo GuardrailsNVIDIA★ 7,15179 of 100Vendor-reportedattack coverage 88%, integration 67%✓✓✓✓✓✗✓✓?✓✗✓✓✓✓FreeApache✗✗✗✗??
2Guardrails AIGuardrails AI★ 7,42478 of 100Vendor-reportedattack coverage 63%, integration 100%✓?✓✓✓✗?✓✓✓✓✓✓✓?Free+ProApache✗✗✗✗✗?
3LLM GuardProtect AI (Palo Alto Networks, acquisition completed 22 Jul 2025)★ 3,207archived, archived read-only 9 Jul 202672 of 100Vendor-reportedattack coverage 75%, integration 67%✓✓?✓✓✓?✓✓✗✓✗✓✓✓FreeMIT✗✗✗✗✗✗
4Llama Guard and Prompt GuardMeta★ 4,39850 of 100Public methodologyattack coverage 50%, integration 50%✓✓✓?✗✗✗✓✗✓✓✗✓✗✗FreeLlama✗✗✗✗?✓
5ProtectFuture AGI36 of 100Vendor-reportedattack coverage 38%, integration 33%✓??✓?✗✗✓✗✗?✓✗✓?UsageMixed✗✗✗✗✗?

✓ documented? unclear✗ not documented✓ documented, but the only link recorded is the vendor’s documentation home rather than the page that shows itEvery mark opens the page it was checked against.

Also in this form factor (6)

The table above is what came out of reading each vendor’s own documentation and comparing the features they state. These are the other names in this form factor, taken from vendor integration catalogues, so the placement here is a first guess from a product description rather than one we have checked. Coverage is uneven because the market is uneven, not because a category was filled to a quota. Plenty of candidates; eight or more is reachable.

Microsoft Presidio, NVIDIA GLiNER-PII, Patronus Lynx, Cleanlab, AutoAlign, Rebuff.

Proxy and gateway

5 tools · ranked only against each other

Called over the network, sits between app and model. Documentation read 16 September 2026; every link, star count and corporate fact re-checked 17 September 2026. A rank here is a rank within this form factor and nothing wider.

What the columns mean
Rank
Where a tool sits inside its own form factor, and nowhere else. Two tools that round to the same score are ordered by GitHub stars, then by fewest unclear cells, then by name, so the score is the finding and the rank is the row's position.
Tool
The product, linked to the documentation root the audit searched. Beneath it, who publishes it, and the repository's star count where it is open source. A count struck through is an archived repository.
Score
The weighted mean of documented cells across attack coverage and integration, scaled to 100. Nothing else reaches it. Move the weights above the table and every score and every rank moves with them.
Evidence
Whether a benchmark of the version that ships has been published, and by whom. It is not part of the score. Beneath it, what each scored group contributed.
Direct injection
Direct prompt injection detection (user turn)
Indirect injection
Indirect prompt injection detection (RAG documents, tool outputs)
Jailbreak
Jailbreak detection, of either kind. Documented when the tool documents either a single-turn detector, which catches a prompt bypassing the model's safety training (DAN, role-play), or a multi-turn one, which carries state across turns.
PII
PII detection or redaction
Secrets
Secrets and credential leakage detection
DoS / token flooding
DoS, token-flooding or rate-abuse protection
Tool-call inspection
Tool-call or function-call payload inspection
Output moderation
Output-side moderation (response scanning)
Schema validation
JSON or structured-output schema validation
Policy language
Custom policy language
LiteLLM hook
Native LiteLLM hook or integration
OpenAI-compatible proxy
OpenAI-compatible drop-in proxy mode
Self-host
Self-hosted, VPC or on-prem deployment
Streaming
Streaming response inspection
Latency published
Published latency figure
Pricing
Pricing model, not scored
License
Open-source licence, not scored
SOC 2 Type II
SOC 2 Type II
ISO 27001
ISO 27001
ISO 42001
ISO 42001
FedRAMP
FedRAMP
Third-party audit
Third-party audit, red-team report or peer review of the product
Benchmark methodology
Vendor benchmark methodology, with dataset, false-positive rate and detection all disclosed
Proxy and gateway guardrail tools, ranked on documented attack coverage and integration. Every mark links the page it was checked against.
Attack coverage8 scoredIntegration6 scoredOperationalnot scoredVerification and compliancenot scored
RankToolScoreEvidenceDirect injectionIndirect injectionJailbreakPIISecretsDoS / token floodingTool-call inspectionOutput moderationSchema validationPolicy languageLiteLLM hookOpenAI-compatible proxySelf-hostStreamingLatency publishedPricingLicenseSOC 2 Type IIISO 27001ISO 42001FedRAMPThird-party auditBenchmark methodology
1LiteLLM built-in guardrailsBerriAI★ 58,94772 of 100Vendor-reportedattack coverage 75%, integration 67%✓??✓✓✓✓✓✗✓✓✓✓?✗Free+EntMIT*✗✗✗✗✗✗
2AI Guardrails (formerly Lakera Guard)Check Point (Lakera acquisition announced 16 Sep 2025)72 of 100Vendor-reportedattack coverage 75%, integration 67%✓✓✓✓?✗✓✓✗✓✓✗✓✓✓Tiered—??✗✗✗?
3AI DefenseCisco (Robust Intelligence, acquired October 2024)66 of 100Vendor-reportedattack coverage 88%, integration 33%✓✓✓✓?✓✓✓✗✓✗✗✓??Sub—????✗?
4Prisma AIRSPalo Alto Networks57 of 100Vendor-reportedattack coverage 63%, integration 50%✓??✓?✓✓✓✗✓✓✗✓??Sub—????✗✗
5Prompt SecuritySentinelOne (Prompt Security; acquisition announced 5 Aug 2025, completed September 2025)52 of 100Vendor-reportedattack coverage 75%, integration 17%✓?✓✓?✓✓✓✗??✗✓??Quote—??✗✗✗✗

✓ documented? unclear✗ not documented✓ documented, but the only link recorded is the vendor’s documentation home rather than the page that shows itEvery mark opens the page it was checked against.

Also in this form factor (19)

The table above is what came out of reading each vendor’s own documentation and comparing the features they state. These are the other names in this form factor, taken from vendor integration catalogues, so the placement here is a first guess from a product description rather than one we have checked. Coverage is uneven because the market is uneven, not because a category was filled to a quota. The deepest category by far; eight or more is easy.

Aporia, HiddenLayer AIDR, Arthur Shield, Galileo Protect, Portkey, Pangea AI Guard, Enkrypt AI, DynamoAI, Lasso, Noma, CrowdStrike AIDR, Trend Micro, ActiveFence, Clavata, Fiddler, PolicyAI, Polygraf, Private AI, Zenity.

Edge and WAF

2 tools · ranked only against each other

Runs at the CDN or ingress, in front of the app. Documentation read 16 September 2026; every link, star count and corporate fact re-checked 17 September 2026. A rank here is a rank within this form factor and nothing wider.

What the columns mean
Rank
Where a tool sits inside its own form factor, and nowhere else. Two tools that round to the same score are ordered by GitHub stars, then by fewest unclear cells, then by name, so the score is the finding and the rank is the row's position.
Tool
The product, linked to the documentation root the audit searched. Beneath it, who publishes it, and the repository's star count where it is open source. A count struck through is an archived repository.
Score
The weighted mean of documented cells across attack coverage and integration, scaled to 100. Nothing else reaches it. Move the weights above the table and every score and every rank moves with them.
Evidence
Whether a benchmark of the version that ships has been published, and by whom. It is not part of the score. Beneath it, what each scored group contributed.
Direct injection
Direct prompt injection detection (user turn)
Indirect injection
Indirect prompt injection detection (RAG documents, tool outputs)
Jailbreak
Jailbreak detection, of either kind. Documented when the tool documents either a single-turn detector, which catches a prompt bypassing the model's safety training (DAN, role-play), or a multi-turn one, which carries state across turns.
PII
PII detection or redaction
Secrets
Secrets and credential leakage detection
DoS / token flooding
DoS, token-flooding or rate-abuse protection
Tool-call inspection
Tool-call or function-call payload inspection
Output moderation
Output-side moderation (response scanning)
Schema validation
JSON or structured-output schema validation
Policy language
Custom policy language
LiteLLM hook
Native LiteLLM hook or integration
OpenAI-compatible proxy
OpenAI-compatible drop-in proxy mode
Self-host
Self-hosted, VPC or on-prem deployment
Streaming
Streaming response inspection
Latency published
Published latency figure
Pricing
Pricing model, not scored
License
Open-source licence, not scored
SOC 2 Type II
SOC 2 Type II
ISO 27001
ISO 27001
ISO 42001
ISO 42001
FedRAMP
FedRAMP
Third-party audit
Third-party audit, red-team report or peer review of the product
Benchmark methodology
Vendor benchmark methodology, with dataset, false-positive rate and detection all disclosed
Edge and WAF guardrail tools, ranked on documented attack coverage and integration. Every mark links the page it was checked against.
Attack coverage8 scoredIntegration6 scoredOperationalnot scoredVerification and compliancenot scored
RankToolScoreEvidenceDirect injectionIndirect injectionJailbreakPIISecretsDoS / token floodingTool-call inspectionOutput moderationSchema validationPolicy languageLiteLLM hookOpenAI-compatible proxySelf-hostStreamingLatency publishedPricingLicenseSOC 2 Type IIISO 27001ISO 42001FedRAMPThird-party auditBenchmark methodology
1Firewall for AIAkamai44 of 100Vendor-reportedattack coverage 63%, integration 17%✓?✓✓?✓✗✓✗✓✗✗??✗Quote—??✗?✗✗
2Firewall for AI (AI Security for Apps)Cloudflare29 of 100Vendor-reportedattack coverage 38%, integration 17%✓✗✗✓?✓✗?✗✓✗✗✗✗✗Plan—??✗?✗✗

✓ documented? unclear✗ not documented✓ documented, but the only link recorded is the vendor’s documentation home rather than the page that shows itEvery mark opens the page it was checked against.

Also in this form factor (2)

The table above is what came out of reading each vendor’s own documentation and comparing the features they state. These are the other names in this form factor, taken from vendor integration catalogues, so the placement here is a first guess from a product description rather than one we have checked. Coverage is uneven because the market is uneven, not because a category was filled to a quota. Realistically caps around four. Injection detection at CDN ingress requires being a CDN, so eight is not reachable without admitting tools that are not edge products.

F5 AI Guardrails, Zscaler.

Managed cloud gateway

3 tools · ranked only against each other

Hyperscaler-native, tied to a model platform. Documentation read 16 September 2026; every link, star count and corporate fact re-checked 17 September 2026. A rank here is a rank within this form factor and nothing wider.

What the columns mean
Rank
Where a tool sits inside its own form factor, and nowhere else. Two tools that round to the same score are ordered by GitHub stars, then by fewest unclear cells, then by name, so the score is the finding and the rank is the row's position.
Tool
The product, linked to the documentation root the audit searched. Beneath it, who publishes it, and the repository's star count where it is open source. A count struck through is an archived repository.
Score
The weighted mean of documented cells across attack coverage and integration, scaled to 100. Nothing else reaches it. Move the weights above the table and every score and every rank moves with them.
Evidence
Whether a benchmark of the version that ships has been published, and by whom. It is not part of the score. Beneath it, what each scored group contributed.
Direct injection
Direct prompt injection detection (user turn)
Indirect injection
Indirect prompt injection detection (RAG documents, tool outputs)
Jailbreak
Jailbreak detection, of either kind. Documented when the tool documents either a single-turn detector, which catches a prompt bypassing the model's safety training (DAN, role-play), or a multi-turn one, which carries state across turns.
PII
PII detection or redaction
Secrets
Secrets and credential leakage detection
DoS / token flooding
DoS, token-flooding or rate-abuse protection
Tool-call inspection
Tool-call or function-call payload inspection
Output moderation
Output-side moderation (response scanning)
Schema validation
JSON or structured-output schema validation
Policy language
Custom policy language
LiteLLM hook
Native LiteLLM hook or integration
OpenAI-compatible proxy
OpenAI-compatible drop-in proxy mode
Self-host
Self-hosted, VPC or on-prem deployment
Streaming
Streaming response inspection
Latency published
Published latency figure
Pricing
Pricing model, not scored
License
Open-source licence, not scored
SOC 2 Type II
SOC 2 Type II
ISO 27001
ISO 27001
ISO 42001
ISO 42001
FedRAMP
FedRAMP
Third-party audit
Third-party audit, red-team report or peer review of the product
Benchmark methodology
Vendor benchmark methodology, with dataset, false-positive rate and detection all disclosed
Managed cloud gateway guardrail tools, ranked on documented attack coverage and integration. Every mark links the page it was checked against.
Attack coverage8 scoredIntegration6 scoredOperationalnot scoredVerification and compliancenot scored
RankToolScoreEvidenceDirect injectionIndirect injectionJailbreakPIISecretsDoS / token floodingTool-call inspectionOutput moderationSchema validationPolicy languageLiteLLM hookOpenAI-compatible proxySelf-hostStreamingLatency publishedPricingLicenseSOC 2 Type IIISO 27001ISO 42001FedRAMPThird-party auditBenchmark methodology
1Model ArmorGoogle Cloud58 of 100Vendor-reportedattack coverage 75%, integration 33%✓✓✓✓✗✗✓✓✗✓✓✗✗?✗Free+—✓✓?✓✗✗
2Bedrock GuardrailsAWS50 of 100Vendor-reportedattack coverage 50%, integration 50%✓✗✓✓✗✗✗✓✗✓✓✗✗✓✗$0.15/1k—✓✓?✓✗✗
3Prompt Shields (AI Content Safety)Microsoft Azure43 of 100Vendor-reportedattack coverage 50%, integration 33%✓✓✓?✗✗?✓✗✓✓✗✗??Per call—✓✓?✓✗✗

✓ documented? unclear✗ not documented✓ documented, but the only link recorded is the vendor’s documentation home rather than the page that shows itEvery mark opens the page it was checked against.

Also in this form factor (3)

The table above is what came out of reading each vendor’s own documentation and comparing the features they state. These are the other names in this form factor, taken from vendor integration catalogues, so the placement here is a first guess from a product description rather than one we have checked. Coverage is uneven because the market is uneven, not because a category was filled to a quota. Bounded by the number of model platforms; five or six is a realistic ceiling.

IBM watsonx.governance / Granite Guardian, OpenAI Moderation API, Databricks guardrails.

Ranking

The same figures as a bar, split by what each scored group contributed.

SDK, in-process

Runs inside the application process. Ranked within this form factor only.

  1. 1NeMo GuardrailsNVIDIAVendor-reported79 of 1003 unclear
  2. 2Guardrails AIGuardrails AIVendor-reported78 of 1004 unclear
  3. 3LLM GuardProtect AI (Palo Alto Networks, acquisition completed 22 Jul 2025)Vendor-reported72 of 1002 unclear
  4. 4Llama Guard and Prompt GuardMetaPublic methodology50 of 1002 unclear
  5. 5ProtectFuture AGIVendor-reported36 of 1006 unclear

Attack coverageIntegrationOperational and compliance are in the matrix and excluded from the score.

Proxy and gateway

Called over the network, sits between app and model. Ranked within this form factor only.

  1. 1LiteLLM built-in guardrailsBerriAIVendor-reported72 of 1003 unclear
  2. 2AI Guardrails (formerly Lakera Guard)Check Point (Lakera acquisition announced 16 Sep 2025)Vendor-reported72 of 1004 unclear
  3. 3AI DefenseCisco (Robust Intelligence, acquired October 2024)Vendor-reported66 of 1008 unclear
  4. 4Prisma AIRSPalo Alto NetworksVendor-reported57 of 1009 unclear
  5. 5Prompt SecuritySentinelOne (Prompt Security; acquisition announced 5 Aug 2025, completed September 2025)Vendor-reported52 of 1008 unclear

Attack coverageIntegrationOperational and compliance are in the matrix and excluded from the score.

Edge and WAF

Runs at the CDN or ingress, in front of the app. Ranked within this form factor only.

  1. 1Firewall for AIAkamaiVendor-reported44 of 1007 unclear
  2. 2Firewall for AI (AI Security for Apps)CloudflareVendor-reported29 of 1005 unclear

Attack coverageIntegrationOperational and compliance are in the matrix and excluded from the score.

Managed cloud gateway

Hyperscaler-native, tied to a model platform. Ranked within this form factor only.

  1. 1Model ArmorGoogle CloudVendor-reported58 of 1002 unclear
  2. 2Bedrock GuardrailsAWSVendor-reported50 of 1001 unclear
  3. 3Prompt Shields (AI Content Safety)Microsoft AzureVendor-reported43 of 1005 unclear

Attack coverageIntegrationOperational and compliance are in the matrix and excluded from the score.

Provenance

Which tools have a benchmark behind them, as distinct from documentation.

SDK, in-process

Every mark on this board is read from vendor documentation, so on feature presence alone every tool is vendor-reported. This view says only whether anyone has published a benchmark of the thing that ships. SOC 2 and ISO 27001 are controls audits and never count as one.

Independent benchmark0

A benchmark of the version that ships today, published in a peer-reviewed venue or by someone other than the vendor, disclosing both a false-positive and a detection rate.

  • No tool in this form factor.
Public methodology1

The vendor publishes a dataset, a false-positive rate and a detection rate for the artefact that ships, but no independent party has run it.

  • Llama Guard and Prompt Guard Meta

    The only tool on the board whose model cards publish dataset, FPR and detection for the shipping artifact, versioned with the models (Prompt Guard 2 carries its own numbers). The numbers are vendor-authored and no peer-reviewed venue for the paper was found, so this is public methodology, not an independent or peer-reviewed benchmark [Certain].

    github.com/meta-llama/PurpleLlamaPrompt Guard model cardPrompt Guard 2 model card

Vendor-reported4

Feature presence is taken from the vendor's own documentation and no benchmark of the tool is published. This is a judgement about transparency, not about quality.

Proxy and gateway

Every mark on this board is read from vendor documentation, so on feature presence alone every tool is vendor-reported. This view says only whether anyone has published a benchmark of the thing that ships. SOC 2 and ISO 27001 are controls audits and never count as one.

Independent benchmark0

A benchmark of the version that ships today, published in a peer-reviewed venue or by someone other than the vendor, disclosing both a false-positive and a detection rate.

  • No tool in this form factor.
Public methodology0

The vendor publishes a dataset, a false-positive rate and a detection rate for the artefact that ships, but no independent party has run it.

  • No tool in this form factor.
Vendor-reported5

Feature presence is taken from the vendor's own documentation and no benchmark of the tool is published. This is a judgement about transparency, not about quality.

Edge and WAF

Every mark on this board is read from vendor documentation, so on feature presence alone every tool is vendor-reported. This view says only whether anyone has published a benchmark of the thing that ships. SOC 2 and ISO 27001 are controls audits and never count as one.

Independent benchmark0

A benchmark of the version that ships today, published in a peer-reviewed venue or by someone other than the vendor, disclosing both a false-positive and a detection rate.

  • No tool in this form factor.
Public methodology0

The vendor publishes a dataset, a false-positive rate and a detection rate for the artefact that ships, but no independent party has run it.

  • No tool in this form factor.
Vendor-reported2

Feature presence is taken from the vendor's own documentation and no benchmark of the tool is published. This is a judgement about transparency, not about quality.

Managed cloud gateway

Every mark on this board is read from vendor documentation, so on feature presence alone every tool is vendor-reported. This view says only whether anyone has published a benchmark of the thing that ships. SOC 2 and ISO 27001 are controls audits and never count as one.

Independent benchmark0

A benchmark of the version that ships today, published in a peer-reviewed venue or by someone other than the vendor, disclosing both a false-positive and a detection rate.

  • No tool in this form factor.
Public methodology0

The vendor publishes a dataset, a false-positive rate and a detection rate for the artefact that ships, but no independent party has run it.

  • No tool in this form factor.
Vendor-reported3

Feature presence is taken from the vendor's own documentation and no benchmark of the tool is published. This is a judgement about transparency, not about quality.

Gaps

Where the documentation runs out, counted across the tools in one form factor.

SDK, in-process

Each bar counts the 5 tools in this form factor. A marked row is one at most one of them documents.

  • SOC 2 Type II (at most one tool documents this)0 documented · 0 unclear · 5 not
  • ISO 27001 (at most one tool documents this)0 documented · 0 unclear · 5 not
  • ISO 42001 (at most one tool documents this)0 documented · 0 unclear · 5 not
  • FedRAMP (at most one tool documents this)0 documented · 0 unclear · 5 not
  • Third-party audit (at most one tool documents this)0 documented · 2 unclear · 3 not
  • DoS / token flooding (at most one tool documents this)1 documented · 0 unclear · 4 not
  • Tool-call inspection (at most one tool documents this)1 documented · 2 unclear · 2 not
  • Benchmark methodology (at most one tool documents this)1 documented · 3 unclear · 1 not
  • Schema validation2 documented · 1 unclear · 2 not
  • Latency published2 documented · 2 unclear · 1 not
  • Policy language3 documented · 0 unclear · 2 not
  • OpenAI-compatible proxy3 documented · 0 unclear · 2 not
  • Secrets3 documented · 1 unclear · 1 not
  • LiteLLM hook3 documented · 1 unclear · 1 not
  • Indirect injection3 documented · 2 unclear · 0 not
  • Jailbreak3 documented · 2 unclear · 0 not
  • Self-host4 documented · 0 unclear · 1 not
  • Streaming4 documented · 0 unclear · 1 not
  • PII4 documented · 1 unclear · 0 not
  • Direct injection5 documented · 0 unclear · 0 not
  • Output moderation5 documented · 0 unclear · 0 not

Proxy and gateway

Each bar counts the 5 tools in this form factor. A marked row is one at most one of them documents.

  • Schema validation (at most one tool documents this)0 documented · 0 unclear · 5 not
  • Third-party audit (at most one tool documents this)0 documented · 0 unclear · 5 not
  • ISO 42001 (at most one tool documents this)0 documented · 2 unclear · 3 not
  • FedRAMP (at most one tool documents this)0 documented · 2 unclear · 3 not
  • Benchmark methodology (at most one tool documents this)0 documented · 2 unclear · 3 not
  • SOC 2 Type II (at most one tool documents this)0 documented · 4 unclear · 1 not
  • ISO 27001 (at most one tool documents this)0 documented · 4 unclear · 1 not
  • OpenAI-compatible proxy (at most one tool documents this)1 documented · 0 unclear · 4 not
  • Latency published (at most one tool documents this)1 documented · 3 unclear · 1 not
  • Secrets (at most one tool documents this)1 documented · 4 unclear · 0 not
  • Streaming (at most one tool documents this)1 documented · 4 unclear · 0 not
  • Indirect injection2 documented · 3 unclear · 0 not
  • LiteLLM hook3 documented · 1 unclear · 1 not
  • Jailbreak3 documented · 2 unclear · 0 not
  • DoS / token flooding4 documented · 0 unclear · 1 not
  • Policy language4 documented · 1 unclear · 0 not
  • Direct injection5 documented · 0 unclear · 0 not
  • PII5 documented · 0 unclear · 0 not
  • Tool-call inspection5 documented · 0 unclear · 0 not
  • Output moderation5 documented · 0 unclear · 0 not
  • Self-host5 documented · 0 unclear · 0 not

Edge and WAF

Each bar counts the 2 tools in this form factor. A marked row is one at most one of them documents.

  • Tool-call inspection (at most one tool documents this)0 documented · 0 unclear · 2 not
  • Schema validation (at most one tool documents this)0 documented · 0 unclear · 2 not
  • LiteLLM hook (at most one tool documents this)0 documented · 0 unclear · 2 not
  • OpenAI-compatible proxy (at most one tool documents this)0 documented · 0 unclear · 2 not
  • Latency published (at most one tool documents this)0 documented · 0 unclear · 2 not
  • ISO 42001 (at most one tool documents this)0 documented · 0 unclear · 2 not
  • Third-party audit (at most one tool documents this)0 documented · 0 unclear · 2 not
  • Benchmark methodology (at most one tool documents this)0 documented · 0 unclear · 2 not
  • Indirect injection (at most one tool documents this)0 documented · 1 unclear · 1 not
  • Self-host (at most one tool documents this)0 documented · 1 unclear · 1 not
  • Streaming (at most one tool documents this)0 documented · 1 unclear · 1 not
  • Secrets (at most one tool documents this)0 documented · 2 unclear · 0 not
  • SOC 2 Type II (at most one tool documents this)0 documented · 2 unclear · 0 not
  • ISO 27001 (at most one tool documents this)0 documented · 2 unclear · 0 not
  • FedRAMP (at most one tool documents this)0 documented · 2 unclear · 0 not
  • Jailbreak (at most one tool documents this)1 documented · 0 unclear · 1 not
  • Output moderation (at most one tool documents this)1 documented · 1 unclear · 0 not
  • Direct injection2 documented · 0 unclear · 0 not
  • PII2 documented · 0 unclear · 0 not
  • DoS / token flooding2 documented · 0 unclear · 0 not
  • Policy language2 documented · 0 unclear · 0 not

Managed cloud gateway

Each bar counts the 3 tools in this form factor. A marked row is one at most one of them documents.

  • Secrets (at most one tool documents this)0 documented · 0 unclear · 3 not
  • DoS / token flooding (at most one tool documents this)0 documented · 0 unclear · 3 not
  • Schema validation (at most one tool documents this)0 documented · 0 unclear · 3 not
  • OpenAI-compatible proxy (at most one tool documents this)0 documented · 0 unclear · 3 not
  • Self-host (at most one tool documents this)0 documented · 0 unclear · 3 not
  • Third-party audit (at most one tool documents this)0 documented · 0 unclear · 3 not
  • Benchmark methodology (at most one tool documents this)0 documented · 0 unclear · 3 not
  • Latency published (at most one tool documents this)0 documented · 1 unclear · 2 not
  • ISO 42001 (at most one tool documents this)0 documented · 3 unclear · 0 not
  • Tool-call inspection (at most one tool documents this)1 documented · 1 unclear · 1 not
  • Streaming (at most one tool documents this)1 documented · 2 unclear · 0 not
  • Indirect injection2 documented · 0 unclear · 1 not
  • PII2 documented · 1 unclear · 0 not
  • Direct injection3 documented · 0 unclear · 0 not
  • Jailbreak3 documented · 0 unclear · 0 not
  • Output moderation3 documented · 0 unclear · 0 not
  • Policy language3 documented · 0 unclear · 0 not
  • LiteLLM hook3 documented · 0 unclear · 0 not
  • SOC 2 Type II3 documented · 0 unclear · 0 not
  • ISO 270013 documented · 0 unclear · 0 not
  • FedRAMP3 documented · 0 unclear · 0 not

Cautions

Where marketing and documentation disagree, or where numbers look comparable and are not.

Four vendors changed hands; names on the board follow the acquirerCertain

Protect AI is Palo Alto Networks (completed 22 Jul 2025). Robust Intelligence is Cisco (October 2024). Prompt Security is SentinelOne (announced 5 Aug 2025, completed September 2025 per SentinelOne). Lakera is Check Point (announced 16 Sep 2025); its docs are now branded Check Point AI Security and the product is AI Guardrails.

Meta no longer carries the Official badgeCertain

The Llama Guard paper (arXiv:2312.06674) has no journal reference and no peer-reviewed venue was found. The model cards still publish dataset, FPR and detection for the shipping artifact, so Meta is the only tool with public methodology, but by the board's own definition that is vendor-reported, not independent.

Check Point AI Guardrails compliance is company-level onlyCertain

Lakera's SOC 2 Type I announcement and security page now redirect to generic Check Point pages. Check Point publishes company-level ISO 27001 and SOC 2 attestations; nothing product-level for AI Guardrails was found. Both cells stay unclear.

Latency numbers are not comparable across tiersCertain

Check Point's figures come from a vendor blog (sub-40 ms, under about 200 ms); its sizing guide with p95 figures is gone. Prisma AIRS publishes rate limits, tiered from 50 RPS to a 150 RPS cap, not latency. SDK tools run in-process so latency depends on your own hardware. The board never ranks on latency, only on whether a figure is published.

Model Armor compliance is stated at two scopesCertain

HIPAA and FedRAMP High are on the product compliance page (updated 16 Sep 2026); SOC 1/2/3 and ISO 27001 are infrastructure-level statements on the overview. ISO 42001 is Google-Cloud-org-level, not product-level.

Enterprise gating changes the real feature setCertain

LiteLLM's Secret Detection is Enterprise-only (its Presidio PII masking is not). Cloudflare's AI detection fields are a paid Enterprise add-on. Cisco and Palo Alto runtime protection sit behind commercial tiers. The free or open-source surface differs materially from the marketed capability set.

Guardrails AI moved its validators off the HubCertain

Since 6 Jul 2026 validators install as PyPI packages and hosted remote inferencing is discontinued (cutoff 25 Aug 2026). The old docs Hub paths return 404; the Hub catalogue still lists 65 validators and the code lives in guardrails-hub-monorepo.

Two products called Firewall for AILikely

Cloudflare's is now AI Security for Apps (formerly Firewall for AI): discovery, PII and inbound prompt scoring documented, indirect injection and output moderation not documented. Akamai's documents inbound and outbound inspection, mostly in briefs and blog posts rather than developer docs.

Bedrock's Prompt Attack filter covers direct injection onlyCertain

The prompt-attack page states tool results and tool definitions are not assessed, and no document or RAG detector is documented. A meaningful gap versus Azure's Documents shield and Model Armor's MCP sanitization.

LLM Guard is end of lifeCertain

Repository archived by the owner on 9 Jul 2026; last release v0.3.16 on 19 May 2025; Protect AI's acquisition by Palo Alto Networks completed 22 Jul 2025. The rendered docs still serve from GitHub Pages even though llm-guard.com fails DNSSEC validation.

Future AGI's Protect is an SDK to a hosted APICertain

protect() runs inline in your process but every check runs in Future AGI's cloud with an API key. It sits in the SDK table because it is called in-process; it is not self-hostable.

How the rank is computed

The rule, in full
Left out5
  • Detection accuracy. No independent, machine-readable benchmark exists for this category, so nothing here is scored on how well a detector works. A mark says a mechanism is documented and nothing more.
  • SOC 2, ISO 27001, ISO 42001 and FedRAMP as efficacy evidence. They are controls audits. They stay in the matrix as reference columns and never reach the score.
  • Operational cells. Pricing and licence are text, and the only scorable one left was whether a latency figure had been published at all, which is a fact about a vendor's writing rather than about its product.
  • Any ranking across form factors. A WAF at CDN ingress and a library inside the process are not two answers to one question, so there are four tables and no combined order.
  • GitHub stars as a score. They are shown for the open-source tools because attention is worth knowing, and they break a tie and do nothing else.

Changes

17 September 2026 · Guardrail board launched7
  • Fifteen guardrail and prompt-injection tools, twenty-four documented features each, and 360 cells. We went through each tool's own documentation feature by feature, and every cell links the page it was checked against.
  • Four tables, one per form factor, and no ranking across them. A web application firewall at CDN ingress and a library inside your process are not two answers to one question, so an SDK is never scored against a WAF.
  • The score is the weighted mean of documented cells across attack coverage and integration, scaled to 100, opening at 60 and 40. Operational and verification stay on the matrix as reference columns and reach no arithmetic. The reader moves the weights and the credit an unclear cell earns, and the order moves with them.
  • Detection accuracy is out of scope, because no independent machine-readable benchmark exists for this category. SOC 2 and ISO 27001 are controls audits and are never read as efficacy evidence.
  • The documentation was read on 16 September 2026 and every link, star count and corporate fact was re-checked against the live source on 17 September. That pass found nine of seventy-four links dead, redirected or bot-blocked, and four vendors that had changed hands.
  • Forty-two of the 133 documented cells link only the documentation root that was searched rather than a page proving the feature. The marks stand as audited, those cells are drawn without an underline, and the difference is stated on the table and in the method.
  • The tool list is incomplete and each form factor carries its own backlog beneath its table. Coverage is uneven because the market is uneven: proxies are the deepest category by far, and edge products cap out low because detecting an injection at CDN ingress requires being a CDN.

Questions

What does a tick mean?

That the vendor's own documentation shows the feature. It does not mean the feature was installed, exercised or found to work, and it says nothing about how often the detector is right. Nothing on this board was run. A question mark means the documentation is unclear: marketing-only, gated behind a sales call, or describing an outcome without a mechanism. A cross means a page was checked and the feature is not documented there.

Why is there no detection accuracy column?

Because no independent, machine-readable benchmark exists for this category. Every efficacy figure a vendor publishes is its own, on its own test set, and there is no neutral party running the same prompts through all fifteen. Inventing a column out of vendor claims would be the one thing this board exists not to do. Where a vendor does publish a dataset with a false-positive and a detection rate, that shows in the Evidence column and never in the score.

Do SOC 2 and ISO 27001 mean a guardrail works?

No. They are controls audits: they say an organisation follows the processes it claims to follow. They are not efficacy audits and say nothing about whether a detector catches an injection. Both stay on the matrix as reference columns, because a buyer often has to have them, and neither reaches the score.

How is the score computed?

It is the weighted mean of documented cells across attack coverage and integration only, scaled to 100. Attack coverage opens at 60 and integration at 40, and the controls above the table move both. There are 14 scored features. An unclear cell earns nothing unless you say otherwise, and the same control offers a quarter or a half.

Why are operational and compliance columns not scored?

Operational and verification and compliance are there to read, not to do arithmetic. A compliance certificate is inherited from a cloud platform or is structurally unavailable to an open-source library, so scoring it would rank company size. The only operational cell that could be scored was whether a latency figure had been published at all, which is a fact about a vendor's writing rather than about its product.

Why is jailbreak one column when the audit asked twice?

The audit asked separately about a detector that reads a single prompt and one that carries state across turns. The board asks whether a tool documents jailbreak detection at all, so the two are one column and a tool that documents either documents it. Both answers are still in the data and both are named when you hover the cell, so splitting the column again would change no mark. Where one is documented and the other unclear, the column reads documented: unclear is the weaker answer and the stronger one is the fact.

Why is there no single ranking?

Because a web application firewall at CDN ingress and a library that runs inside your process are not two answers to one question. They see different traffic, fail in different ways and are bought by different people. There are 4 tables, each ranked only within itself, and nothing on this page adds them together.

What decides a tie?

Scores are compared as displayed, because the data underneath is 14 binary cells and a sub-point gap is not real precision. Two tools that round to the same figure are ordered by GitHub stars, then by fewest unclear cells, then by name. A proprietary tool has no star count and sorts last inside a tie, which is a licensing fact and not a quality one.

Do GitHub stars affect the score?

Never. They are shown for the 5 open-source tools because attention is worth knowing, they break a tie, and they do nothing else. A count on an archived repository is struck through, because a star count and a maintenance status have to be read together or not at all. One of the repositories on the board is archived.

Is this every guardrail?

No, and the rest of the field is on the page. Each table is what came out of reading vendor documentation and comparing the features each vendor states; beneath it, "Also in this form factor" lists the other names we know of. Coverage is uneven because the market is uneven: the proxy category is the deepest by far, and edge products cap out low because detecting an injection at CDN ingress requires being a CDN.

Why does a tick sometimes link a documentation home page?

Because that is all the audit recorded for it. 41 of the 132 documented cells link the documentation root that was searched rather than a page proving the feature. Those ticks are drawn grey rather than copper and say so when you hover them. The mark is the auditor's and stands; the link is weaker evidence, and the board would rather show that than dress a root link up as proof.

How often does this update?

There is no fixed schedule. The date at the top is the last time the data changed, not the last time the page was built. A weekly job checks every source link still resolves and opens an issue when one does not; it never edits a mark.

Every ranked number links to the official row it came from.