Claude Sonnet 4 vs OpenAI Codex Mini

Compare Claude Sonnet 4 by Anthropic against OpenAI Codex Mini by OpenAI, in 21 community votes, claude sonnet 4 wins 67% of head-to-head duels, context windows of 200K vs 200K, tested across 10 shared challenges. Updated April 2026.

Which is better, Claude Sonnet 4 or OpenAI Codex Mini?

Claude Sonnet 4 is the better choice overall, winning 67% of 21 blind community votes on Rival. Claude Sonnet 4 costs $3/M input tokens vs $1.5/M for OpenAI Codex Mini. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Sonnet 4 and OpenAI Codex Mini

Claude Sonnet 4 is made by anthropic while OpenAI Codex Mini is from openai. Claude Sonnet 4 has a 200K token context window compared to OpenAI Codex Mini's 200K. On pricing, Claude Sonnet 4 costs $3/M input tokens vs $1.5/M for OpenAI Codex Mini. In community voting, In 21 community votes, Claude Sonnet 4 wins 67% of head-to-head duels.

In 21 community votes, Claude Sonnet 4 wins 67% of head-to-head duels. Claude Sonnet 4 leads in Image Generation. Based on blind community voting from the Rival open dataset of 21+ human preference judgments for this pair.

Web Design: Claude Sonnet 4 and OpenAI Codex Mini are tied
Image Generation: Claude Sonnet 4 wins 88% of votes
Our Verdict
Claude Sonnet 4
Claude Sonnet 4Winner
OpenAI Codex Mini
OpenAI Codex MiniRunner-up

Pick Claude Sonnet 4. In 21 blind votes, Claude Sonnet 4 wins 67% of the time. That's not luck.

Claude Sonnet 4 particularly excels in Image Generation.

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Claude Sonnet 4OpenAI Codex Mini

279 AI models invented the same fake scientist.

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