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GLACIS vs Prompt Inspector

GLACIS

glacis.io

Prompt Inspector

promptinspector.io

Side by side

FigureGLACISPrompt Inspector
Price fromFreeFree
Free planYesYes
Free trial——
Open source—Yes
WebYesYes
Windows—Yes
macOS—Yes
Linux—Yes
APIYesYes
Self-hostedYesYes
Plans published15
Spec score · LLM Security Tools7.8 (#9)8.5 (#5)
SupportGlacis says it typically replies to contact requests within one business day and takes on a small number of managed deployments each quarter.The homepage lists community support for self-hosted users and dedicated SLA support for enterprise customers.
What it doesGlacis places runtime controls in the path of AI actions and creates signed records of covered decisions for external verification.Prompt Inspector places a real-time security layer between untrusted input and an LLM application or agent.

Plans

GLACIS

  • Free accountFree

GLACIS pricing →

Prompt Inspector

  • FreeFree
  • FreeFree
  • EnterprisePriced on request
  • ProPriced on request
  • StarterPriced on request

Prompt Inspector pricing →

In their own words

GLACIS

GLACIS puts controls in the path of AI actions and creates signed records of covered decisions for external verification. When an action crosses configured bounds, it can be constrained, held for a person, or denied; other actions can pass through unchanged. Glacis says it operates nine production components as a managed service alongside the identity provider, cloud, and security systems a customer already uses. Records use OVERT, a published open format that implementers and reviewers can inspect, and can be checked in a browser without a Glacis account. The site says payloads remain in the customer’s environment and records contain hashes; omitting protected fields depends on deployment setup. A record check does not establish whether an action was correct, whether every event was captured, or whether a system is safe or compliant. GLACIS is available by API, web, and self-hosted deployment. Its Free account costs nothing, with no card required. The contact page describes a six-week evaluation for a workflow under review.

Visit glacis.io

Prompt Inspector

Prompt Inspector has no write-up on Specifiction yet; its figures are above.

Visit promptinspector.io