Claude 3.7 Sonnet vs GPT-5 Pro

Compare Claude 3.7 Sonnet by Anthropic against GPT-5 Pro by OpenAI, context windows of 200K vs 400K, tested across 42 shared challenges. Updated April 2026.

Which is better, Claude 3.7 Sonnet or GPT-5 Pro?

Claude 3.7 Sonnet and GPT-5 Pro are both competitive models. Claude 3.7 Sonnet costs $3/M input tokens vs $15/M for GPT-5 Pro. Context windows: 200K vs 400K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3.7 Sonnet and GPT-5 Pro

Claude 3.7 Sonnet is made by anthropic while GPT-5 Pro is from openai. Claude 3.7 Sonnet has a 200K token context window compared to GPT-5 Pro's 400K. On pricing, Claude 3.7 Sonnet costs $3/M input tokens vs $15/M for GPT-5 Pro.

Our Verdict
GPT-5 Pro
GPT-5 Pro
Claude 3.7 Sonnet
Claude 3.7 SonnetRunner-up

No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer, bigger context window.

Claude 3.7 Sonnet is 8.0x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
91%

Claude 3.7 Sonnet uses 121.0x more bold

Claude 3.7 Sonnet
GPT-5 Pro
62%Vocabulary65%
35wSentence Length15w
0.99Hedging0.32
1.2Bold0.0
4.3Lists2.9
0.00Emoji0.00
1.78Headings0.00
0.23Transitions0.01
Based on 13 + 11 text responses
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Claude 3.7 SonnetGPT-5 Pro

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