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Lenz
For AI product teams: Lenz fact-checks AI outputs across multiple models so your users get verified claims instead of hallucinations.
Built by Yana, Kosta Jordanov, Pavel Jordanov and 2 others
Freemium
Visit website → Upvotes · 257
Lenz is a Product Hunt listing on Launch Llama with 257 total upvotes, founded by Yana, Kosta Jordanov, Pavel Jordanov and 2 others who joined in Aug 2026, compared against 6 alternatives.
Product Hunt listing
Listing status
257upvotes
Community score
Yana, Kosta Jordanov, Pavel Jordanov and 2 others (Joined Aug 2026)
Founder
Compared against 6 alternatives
Market comparison
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90d
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Key Features
- Extract verifiable claims from text automatically
- Assess claims with multiple models for verdicts
- Verify claims with full adversarial pipeline and citations
- Answer follow-up questions grounded on verification
- Review whole drafts and flag issues with rewrites
About
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
Use Cases
- Teams checking claims in AI-drafted newsletters and posts before publication
- Legal teams verifying facts in tax and legal memos
- Customer-facing teams validating AI-generated answers
- Teams verifying market and competitor claims against public sources
Pricing
Free plan with 100 credits/month. Plus at $7.99/month. Pro at $99/month with €10,000 warranty per check. Scale at $399/month for high-volume workflows. No card required to start.
Alternatives
- NOAN
The fact layer for your AI agents
- AiZolo
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- Bullshit Detector
For researchers: Bullshit Detector fact-checks claims across the internet so you verify information accuracy before sharing or acting on it.
- Stackbroker
For AI developers: Stackbroker routes agent API calls intelligently, tracking costs, policies, and performance so your agents pick the right endpoint every time.
- Spaz AI
For entertainment: Spaz AI is a parody AI that delivers hilariously wrong answers with complete confidence and absurdist humor.
- BLERBZ
For AI professionals: BLERBZ tracks breaking AI stories and ranks trending topics daily so you stay ahead of the ecosystem in real time.
Ask AI
ChatGPT Claude Perplexity Grok
For agents
llms.txt · llms-full.txt · ai.txt · Live fact sheet · Full catalog (.md) · Endpoint index · API spec · REST access · Agent server · Server manifest · Server discovery