Claude 3.7 Sonnet vs GPT-5.5
Compare Claude 3.7 Sonnet by Anthropic against GPT-5.5 by OpenAI, context windows of 200K vs 1.1M, tested across 54 shared challenges. Updated April 2026.
Which is better, Claude 3.7 Sonnet or GPT-5.5?
Claude 3.7 Sonnet and GPT-5.5 are both competitive models. Claude 3.7 Sonnet costs $3/M input tokens vs $5/M for GPT-5.5. Context windows: 200K vs 1050K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Sonnet and GPT-5.5
Claude 3.7 Sonnet is made by anthropic while GPT-5.5 is from openai. Claude 3.7 Sonnet has a 200K token context window compared to GPT-5.5's 1050K. On pricing, Claude 3.7 Sonnet costs $3/M input tokens vs $5/M for GPT-5.5.
Per 1M tokens
Claude 3.7 Sonnet is cheaper on both — 1.7× input, 2.0× output
No community votes yet. On paper, GPT-5.5 has the edge — bigger model tier, newer, bigger context window.
Style Comparison
Claude 3.7 Sonnet uses 6.6x more transitions
