OpenAI Codex Mini vs GPT-5

Compare OpenAI Codex Mini and GPT-5, both from OpenAI, in 16 community votes, gpt-5 wins 79% of head-to-head duels, context windows of 200K vs 400K, tested across 10 shared challenges. Updated April 2026.

Which is better, OpenAI Codex Mini or GPT-5?

GPT-5 is the better choice overall, winning 79% of 16 blind community votes on Rival. OpenAI Codex Mini costs $1.5/M input tokens vs $1.25/M for GPT-5. Context windows: 200K vs 400K tokens. Compare their real outputs side by side below.

Key Differences Between OpenAI Codex Mini and GPT-5

OpenAI Codex Mini is made by openai while GPT-5 is from openai. OpenAI Codex Mini has a 200K token context window compared to GPT-5's 400K. On pricing, OpenAI Codex Mini costs $1.5/M input tokens vs $1.25/M for GPT-5. In community voting, In 16 community votes, GPT-5 wins 79% of head-to-head duels.

In 16 community votes, GPT-5 wins 79% of head-to-head duels. GPT-5 leads in Image Generation, Web Design. Based on blind community voting from the Rival open dataset of 16+ human preference judgments for this pair.

Image Generation: GPT-5 wins 100% of votes
Web Design: GPT-5 wins 75% of votes
Conversation: OpenAI Codex Mini and GPT-5 are tied
Our Verdict
GPT-5
GPT-5Winner
OpenAI Codex Mini
OpenAI Codex MiniRunner-up

Pick GPT-5. In 16 blind votes, GPT-5 wins 79% of the time. That's not luck.

GPT-5 particularly excels in Image Generation, Web Design.

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