Second Opinion Extension

A right-click is all it takes to fact-check text with Second Opinion Extension. Select content on a page, choose the action from the context menu, and the browser extension sends it to Grok AI, which flags inaccuracies and biases.

Second Opinion Extension is an AI fact-checking tool that works across multiple browsers, so you are not tied to one setup.

The extension itself is free to install and use, but there is a catch.

It needs your own Grok API key, and every check uses tokens that you pay for.

Costs depend on how often you run it and how much text you send.

Accuracy is the other thing to keep in mind.

Results are only as reliable as Grok AI, so see each check as a quick first pass and confirm anything important against several sources.

It is handy for readers who want a fast sanity check while browsing, not a final verdict.