Can You Detect Claude-Written Text?

Yes. Claude (by Anthropic) has its own writing fingerprint — distinct from ChatGPT. Claude tends to produce longer, more nuanced paragraphs with careful qualifications. It frequently uses phrases like “I should note,” “it’s worth considering,” and “there are several factors at play.”

Our detector identifies these Claude-specific patterns alongside general AI signals.

How Claude Text Differs from ChatGPT

SignalClaude TendencyChatGPT Tendency
Paragraph lengthLonger, more detailedMedium, structured
Hedging style“I should note,” “it’s worth considering”“It is important to note,” “Furthermore”
ToneConversational, cautiousFormal, authoritative
ListsFewer bullet pointsLoves bullet points
Self-referenceSometimes says “I think”Avoids first person

Detection Accuracy for Claude

Claude 3.5 and Claude 4 produce more natural-sounding text than earlier versions. Detection accuracy on unedited Claude text is typically 85-92% — slightly lower than ChatGPT because Claude’s output is more varied.

Our word-level heatmap is especially useful for Claude text, where AI patterns may be more subtle and scattered rather than concentrated in obvious phrases.

How to Check for Claude-Generated Text

  1. Go to our free AI detector
  2. Paste the text
  3. Click “Analyze”
  4. Check the heatmap — pay attention to qualifying phrases and paragraph uniformity

Frequently Asked Questions

Is Claude harder to detect than ChatGPT?

Generally yes. Claude’s output is more varied and conversational, which makes it closer to human writing patterns. Our detector compensates by analyzing sentence-level uniformity and hedging patterns specific to Claude.

Can you tell Claude apart from ChatGPT?

Our detector identifies text as AI-generated but doesn’t specify which model wrote it. The patterns overlap significantly — what matters is whether it reads as human or machine.

Is this free?

Yes, completely free. No sign-up, no limits.

See Also

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