How to fact-check Claude — without slowing down your workflow
Verol adds independent verification to Claude responses in real time — automatically, as the response appears.
Manual Claude fact-checking involves copying claims, running them through search, checking the original sources, and repeating for each response. Claude's longer, more detailed responses make this especially time-intensive.
Verol runs in your browser alongside Claude. It identifies factual claims — statistics, citations, named facts — and independently checks each one against primary sources as Claude generates its response.
Claude is designed to express calibrated uncertainty, which helps. But uncertainty expression is a learned behavior, not a ground-truth signal. Independent external verification is the only reliable check.
Feature comparison
Common questions
Is Claude more accurate than ChatGPT?
Published benchmarks show different accuracy profiles across different task types. Neither model has a zero error rate on practical tasks. Independent verification is appropriate for both.
Does Claude's 'I'm not sure' mean it's more reliable?
Claude's training to express uncertainty provides genuine value — it will hedge on more genuinely uncertain questions. But uncertainty calibration is a learned behavior; it doesn't guarantee that confident statements are correct.
Does Verol work on Claude.ai?
Yes. Verol supports Claude.ai and automatically verifies factual claims in Claude responses.
Add independent fact-checking to Claude
Verol independently verifies Claude responses in real time — without adding extra steps to your workflow.
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