Claude 3.7 Sonnet vs o3 Mini
Compare Claude 3.7 Sonnet by Anthropic against o3 Mini by OpenAI, context windows of 200K vs 64K, tested across 54 shared challenges. Updated June 2026.
Which is better, Claude 3.7 Sonnet or o3 Mini?
Claude 3.7 Sonnet and o3 Mini are both competitive models. Claude 3.7 Sonnet costs $3/M input tokens vs $1.1/M for o3 Mini. Context windows: 200K vs 64K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Sonnet and o3 Mini
Claude 3.7 Sonnet is made by anthropic while o3 Mini is from openai. Claude 3.7 Sonnet has a 200K token context window compared to o3 Mini's 64K. On pricing, Claude 3.7 Sonnet costs $3/M input tokens vs $1.1/M for o3 Mini.
No community votes yet. On paper, Claude 3.7 Sonnet has the edge — bigger model tier, newer, bigger context window.
o3 Mini is 3.4x cheaper per token — worth considering if cost matters.
Cost per 1M tokens
o3 Mini is cheaper on both — 2.7× input, 3.4× output
Style Comparison
Claude 3.7 Sonnet uses 3.8x more headings
