# Lenz (lenz.io)

Verifies claims in model-written text against outside public evidence before readers see it.

- Atlas card: https://inite.ai/en/atlas/lenz.io
- Site: https://lenz.io
- For: Teams publishing AI-drafted text to customers or clients that needs factual checks before release.
- Categories: security
- Use 0/100 · alive 100/100

## Used for

- Check factual claims in AI-drafted text before release
- Review citations in a draft against their cited sources
- Flag uncertain claims for a human reviewer

## Price

- from 7.99 USD/month, free plan (read 2026-10-26 on https://lenz.io/plans)

## For developers

- API docs: https://lenz.io/developers
- MCP server: io.lenz/fact-check (namespace; auth on 2026-10-26)
- Read 2026-10-26

## MCP server, measured daily

Server: https://lenz.io/mcp, checked every day since 2026-10-26 (2 checks).

- Answered: measuring, 2 daily checks so far
- Median first answer: 156 ms
- Sign-in: OAuth (the client signs the user in)
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: gdpr
- Training on your data: no (https://lenz.io/privacy)
- Read 2026-10-26

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Source: INITE Atlas, https://inite.ai/en/atlas/lenz.io. JSON: https://inite.ai/api/atlas/lenz.io. MCP: https://inite.ai/api/mcp (atlas_lookup).