Best GLACIS Alternatives in 2026
Updated
20 platforms from LLM security tools ranked against GLACIS on the same published basis.
- 1GLACIS vs Prompt Inspector
- 2GLACIS vs PromptGuard
- 3GLACIS vs Amazon Bedrock Guardrails
- 4GLACIS vs GuardionAI
- 5GLACIS vs Openlayer Guardrails
- 7GLACIS vs Inferwall
- 8GLACIS vs WitnessAI
- 9GLACIS vs Guardrails AI
- 10GLACIS vs Lasso AI Security Platform
- 11GLACIS vs Prisma AIRS AI Gateway
- 12GLACIS vs HiddenLayer AI Guardrails
- 13GLACIS vs Sanctum Runtime
- 14GLACIS vs SecureAI Guard
- 15GLACIS vs ZeroTrusted AI Firewall
- 16GLACIS vs Check Point AI Guardrails
- 17GLACIS vs Microsoft Custom Neural Voice
- 18GLACIS vs Noma Security
- 19GLACIS vs Straiker Defend AI
- 20GLACIS vs VotalAI
- 21GLACIS vs LLM Guard
GLACIS alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Prompt Inspector | 7.3 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | PromptGuard | 7.1 | Free plan | $19/mo | API, Browser, Linux, Mac, self-hosted, Web, Windows |
| 3 | Amazon Bedrock Guardrails | 7.0 | No | $0.07/mo | Web |
| 4 | GuardionAI | 7.0 | No | — | API, Linux, Mac, self-hosted, Web, Windows |
| 5 | Openlayer Guardrails | 7.0 | Free plan | Free | API, self-hosted, Web |
| 7 | Inferwall | 6.6 | No | — | API, Linux, Mac, Windows |
| 8 | WitnessAI | 6.6 | No | — | API, Web, Windows |
| 9 | Guardrails AI | 6.5 | No | — | API, self-hosted, Web |
| 10 | Lasso AI Security Platform | 6.5 | No | — | API, Browser, Web |
| 11 | Prisma AIRS AI Gateway | 6.4 | No | — | API, self-hosted, Web |
| 12 | HiddenLayer AI Guardrails | 6.3 | No | $416666.67/mo | self-hosted, Web |
| 13 | Sanctum Runtime | 6.3 | No | — | Android, API, iOS, self-hosted, Web |
| 14 | SecureAI Guard | 6.2 | No | $2,999/mo | API, self-hosted, Web |
| 15 | ZeroTrusted AI Firewall | 6.1 | No | — | self-hosted, Web |
| 16 | Check Point AI Guardrails | 5.9 | No | — | Web |
| 17 | Microsoft Custom Neural Voice | 5.9 | No | — | Web |
| 18 | Noma Security | 5.8 | No | — | — |
| 19 | Straiker Defend AI | 5.8 | No | — | — |
| 20 | VotalAI | 5.8 | No | — | Web |
| 21 | LLM Guard | 5.7 | No | — | — |
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Questions about GLACIS alternatives
What is the best alternative to GLACIS?
Prompt Inspector, number 1 in LLM security tools with a score of 7.3 out of 10. The others here: PromptGuard, Amazon Bedrock Guardrails, GuardionAI and 16 more.
What is the best free alternative to GLACIS?
Prompt Inspector is the best-ranked alternative with a free plan. 3 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.