Fact-check anything with Grok and get a sourced answer in 5 minutes
A simple workflow: from a question or quote to a verified conclusion without paid services or a card
- 1.Open grok.com in your browser - it's the official Grok web app by xAI. Signing in via X is optional.
If the site is unavailable in your region, use a VPN. Free mode turns on automatically.
Grok (grok.com) ↗About this tool - 2.Sign in with your X account or create a new one. Sign-in is needed so the model can keep dialogue context and track message limits.
Registration is free and does not require a bank card. Do not enter payment details unless the recipe requires it.
Grok (grok.com) ↗About this tool - 3.In the input box, select the DeepSearch or Think mode (if you see the toggle) - it makes the model search for sources before answering. For a simple question, the default mode is enough.
DeepSearch uses up your limit faster, but provides source links, which is critical for fact-checking.
Grok (grok.com) ↗About this tool - 4.Paste the ready-made fact-checking prompt into the chat, replacing the text in square brackets with your claim, quote, or link.
The more specific the claim, the more accurate the check. You can paste a news headline, a quote from a post, or a link.
Grok (grok.com) ↗About this toolPromptAct as a fact-checker. Verify this claim: [paste the claim, quote or link here]. For each part of the claim, label it as TRUE / FALSE / UNVERIFIED, explain why in one short sentence, and attach a source link. If you cannot find a reliable source, say so explicitly. End with a one-line overall verdict.
What this prompt doesThe English prompt asks the model to act as a fact-checker: break the claim into parts, label each as true/false/unverifiable, provide an explanation and a source link. Replace the text in square brackets with what you want to check. - 5.Read the response. Each TRUE or FALSE point should have a link - click it and check the original source. Don't trust the summary alone.
If there are no links or they lead to questionable sites, ask a follow-up: 'Find 2 independent sources for each TRUE claim'.
Grok (grok.com) ↗About this tool - 6.For a debatable conclusion, ask the model to find counterarguments in the same chat - it takes 30 seconds and reduces the risk of error.
Grok keeps context within the conversation, so you can ask follow-ups without repeating the original claim.
Grok (grok.com) ↗About this tool
- freeGrok on grok.com - free modeThere is a free tier with a limited number of messages per day; DeepSearch and Think modes use up the limit faster.
- subscriptionSuperGrok / X Premium+ subscriptionA paid subscription removes some limits and unlocks advanced modes; check the exact price on the x.ai or X pricing page.
Why today
AI services change fast - interfaces and free limits may differ from what's described.