Lenz is an audit-grade AI fact-checking API for products that cannot afford to hallucinate. It extracts verifiable claims from any text, then runs each through an eight-model, five-stage pipeline of independent research, opposing-side debate, three reviewer panels, and a cited conclusion, returning a scored verdict with every source attached. Four API primitives form a depth ladder: /extract, /assess for a fast multi-model verdict, /verify for the full adversarial pipeline, and /ask for follow-up Q&A. It ships a remote MCP server and SDKs for Python, TypeScript, n8n, and Zapier, and integrates with Claude, Cursor, and ChatGPT. Teams use Lenz to gate publishing pipelines, triage incidents, and verify AI output before release. It is notable now as AI-written content and agent decisions demand sourced, defensible truth. Ranked #3 Product of the Day on Product Hunt, August 27, 2026.
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