Lenz
Independent, multi-model fact-checking API for AI workflows
In plain words
Lenz is an API that fact-checks text for AI applications by extracting claims and verifying them across multiple sources and models. It uses debate between opposing viewpoints, independent reviewer panels, and citation tracking to return scored verdicts with full transparency about sources and reasoning. Available as an API and MCP server, it serves teams building AI products where factual accuracy is critical, offering a free tier with 1,000 daily extractions and paid plans starting at $7.99 monthly.
written from the facts on this page · September 2026
From the sources
Lenz is an AI fact-checking API for products that cannot afford to hallucinate. It extracts verifiable claims from any text, then checks each one: searching independent sources, running multi-model debate, and routing through a review panel — returning a scored verdict with every source, argument, and step visible. Most AI tools give you one model's best guess from memory. Lenz ensures no single model's blind spots drive the conclusion. Available as API and MCP. Try it free at lenz.io/ph
Drop-in fact-checking API for AI pipelines. 1 month Developer access free — Product Hunt exclusive.
An independent, multi-model fact-checking API for the teams that can’t afford to ship a wrong claim. Multiple models across five stages, grounded in independent sources. Opposing-side debate, three independent reviewers, full citation trail. ✓ New code sent Didn't get it? 0" x-text="resending ? 'Sending...' : (resendCooldown > 0 ? 'Resend in ' + resendCooldown + 's' : 'Resend')"> A free month of Developer access — $99 value, no card required. Full Developer access is applied the moment you sign up. New accounts only · within 7 days of your first visit Lenz frames it as a precise, falsifiable statement — removing ambiguity before research begins. Multiple queries across…from lenz.io
Pricing, as stated on its site
Free tier, paid plans from $7.99/mo — Free plan with 1,000 extractions/day and 100 credits/month. Paid plans start at $7.99/month (Plus), $99/month (Developer), $399/month (Scale), plus Enterprise option. Annual billing offers discounts.
checked September 2026 · prices change
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