According to AlphaMoat, as of 2026-09, the Chrome extension Theia has 77 users (+20.3% MoM), rated 4.8 (18 reviews) — ranked #4,664 of 9,324 AI browser extensions, and #355 of 676 in Education & Research.
What is Theia
Hold your LLM accountable Tired of second-guessing what you read online? Or wondering whether your AI chatbot is confidently making things up?
Theia is a free Chrome extension that helps you verify claims, detect hallucinations, and spot bias anywhere on the web.
Instead of blindly trusting polished answers or persuasive articles, Theia gives you clear verdicts backed by real sources, so you can decide what to trust.
🔍 What Theia Does
Fact-Check Any Claim: Highlight any statement on a webpage and get an instant verdict with explanations and cited sources.
Audit AI Responses: Using ChatGPT, Claude, or Gemini? Theia analyzes AI outputs for hallucinations, factual errors, and sycophancy (agreeing just to sound helpful)!
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Analyze Webpage Credibility: Get a high-level reliability check of any article. Theia flags misleading framing, cherry-picked facts, and potential bias.
Source Transparency: Every verdict includes a concise explanation and direct links to the sources used for verification, no black boxes.
On device mode: Theia has an on device mode, which fact-checks anything through a secured backend only to query outside sources (Wikipedia, PubMed, SEC filings, and more) with a custom research pipeline!
🛡️ Why Install Theia?
AI is fast, fluent, and often wrong. Online content is persuasive, polarized, and easy to misinterpret.
Theia acts as your second set of eyes, helping you:
Research with confidence
Catch AI hallucinations before they waste your time
Evaluate news and claims more critically
Perfect for students, professionals, researchers, and anyone who wants to think clearly online.
🔒 Privacy & Security
Theia is built with a security-first architecture. Requests are processed through a secure backend proxy, and your browsing experience remains private.
Stop guessing. Start verifying. Install Theia and hold your sources and your AI accountable.
Extension profile
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+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.