DoubleChecks - AI Fact Checker

Fact-check ChatGPT & Claude answers inline with 3 independent AIs. Red/Amber/Green verdicts with sources.

Don't take one AI's word for it. DoubleChecks verifies any claim — a viral post, a news headline, or an answer from ChatGPT or Claude — using independent AI systems and multiple sources to give you a clear verdict with a plain-English explanation and sources. How it works: - Highlight any text on a page → click the DoubleCheck button → get an instant verdict, inline. - On ChatGPT and Claude, a "Fact-check" button appears under answers so you can fact-check the AI as you read. - See each AI's own verdict and the sources, then open the full report — or share the catch. Why multiple AIs? A single model can be confidently wrong. Cross-checking three independent systems against real sources catches hallucinations and misleading claims one model alone would miss. Free to start: A few free checks with no account needed. Create a free account for 10 more, or subscribe for a monthly plan. Private by design: Only the text you choose to check is ever sent — never your browsing history or the rest of a conversation.