Best Guardrails AI Alternatives in 2026
Updated
20 tools from LLM security tools ranked against Guardrails AI on the same published basis.
- 1Guardrails AI vs Prompt Inspector
- 2Guardrails AI vs PromptGuard
- 3Guardrails AI vs NVIDIA NeMo Guardrails
- 4Guardrails AI vs GuardionAI
- 5Guardrails AI vs Sanctum Runtime
- 6Guardrails AI vs Amazon Bedrock Guardrails
- 7Guardrails AI vs VotalAI
- 8Guardrails AI vs Inferwall
- 9Guardrails AI vs Openlayer Guardrails
- 10Guardrails AI vs WitnessAI
- 11Guardrails AI vs GLACIS
- 12Guardrails AI vs LLM Guard
- 13Guardrails AI vs CyberSecEval
- 15Guardrails AI vs Lasso AI Security Platform
- 16Guardrails AI vs Amazon Nova Reel
- 17Guardrails AI vs Check Point AI Guardrails
- 18Guardrails AI vs HiddenLayer AI Guardrails
- 19Guardrails AI vs Noma Security
- 20Guardrails AI vs Prisma AIRS AI Gateway
- 21Guardrails AI vs Straiker Defend AI
Guardrails AI alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Prompt Inspector | 7.3 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | PromptGuard | 7.3 | Free plan | $19/mo | API, Browser, Linux, Mac, self-hosted, Web, Windows |
| 3 | NVIDIA NeMo Guardrails | 7.2 | Free plan | Free | API, Linux, Mac, self-hosted, Windows |
| 4 | GuardionAI | 7.1 | No | — | API, Linux, Mac, self-hosted, Web, Windows |
| 5 | Sanctum Runtime | 7.0 | No | — | Android, API, iOS, Linux, self-hosted, Web |
| 6 | Amazon Bedrock Guardrails | 6.9 | No | $0.07/mo | Web |
| 7 | VotalAI | 6.9 | No | — | API, self-hosted, Web |
| 8 | Inferwall | 6.8 | No | — | API, Linux, Mac, Windows |
| 9 | Openlayer Guardrails | 6.8 | Free plan | Free | API, self-hosted, Web |
| 10 | WitnessAI | 6.8 | No | — | API, Web, Windows |
| 11 | GLACIS | 6.7 | Free plan | Free | API, self-hosted, Web |
| 12 | LLM Guard | 6.7 | Free plan | Free | API, Linux, self-hosted |
| 13 | CyberSecEval | 6.6 | Free plan | Free | API, Linux, self-hosted |
| 15 | Lasso AI Security Platform | 6.6 | No | — | API, Browser, Web |
| 16 | Amazon Nova Reel | 6.4 | No | — | API, Web |
| 17 | Check Point AI Guardrails | 6.4 | No | — | API, self-hosted, Web |
| 18 | HiddenLayer AI Guardrails | 6.4 | No | $416666.67/mo | self-hosted, Web |
| 19 | Noma Security | 6.4 | No | — | API, self-hosted, Web |
| 20 | Prisma AIRS AI Gateway | 6.4 | No | — | API, self-hosted, Web |
| 21 | Straiker Defend AI | 6.4 | No | $8333.33/mo | API, self-hosted, Web |
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Questions about Guardrails AI alternatives
What is the best alternative to Guardrails AI?
Prompt Inspector, number 1 in LLM security tools with a score of 7.3 out of 10. The others here: PromptGuard, NVIDIA NeMo Guardrails, GuardionAI and 16 more.
What is the best free alternative to Guardrails AI?
Prompt Inspector is the best-ranked alternative with a free plan. 7 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.