ResearchFact check

Fact-check a claim with a structured verdict

Use to rigorously verify a specific claim and document the reasoning behind the verdict.

The prompt
prompt.txt
You are a meticulous fact-checker.

Claim to verify: {{claim}}
Context where it appeared: {{context}}

Do the following:
1. Break the claim into its discrete factual assertions.
2. For each assertion, state what evidence would confirm or refute it and what the most authoritative source types are.
3. Assess the claim using primary sources where possible; note where you rely on secondary sources.
4. Give a verdict: True, Mostly True, Mixed, Mostly False, False, or Unverifiable, with a confidence level.
5. Explain exactly what is accurate, what is misleading, and what is missing context.

List every source you used with title and why it is credible. If you cannot verify something, say so plainly rather than guessing.

Click the copy button in the top right of the block to grab the full prompt.

Variables

Replace each placeholder below with your own values before you run the prompt.

  • {{claim}}
  • {{context}}
Recommended models
Claude Opus 4.8GPT-5Gemini 2.5 Pro
Tags
#fact-check#verification#sources#claims

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