OpenAI Codex Mini vs DeepSeek R1 0528

Compare OpenAI Codex Mini by OpenAI against DeepSeek R1 0528 by DeepSeek, context windows of 200K vs 164K, tested across 10 shared challenges. Updated April 2026.

Which is better, OpenAI Codex Mini or DeepSeek R1 0528?

OpenAI Codex Mini and DeepSeek R1 0528 are both competitive models. OpenAI Codex Mini costs $1.5/M input tokens vs $0/M for DeepSeek R1 0528. Context windows: 200K vs 164K tokens. Compare their real outputs side by side below.

Key Differences Between OpenAI Codex Mini and DeepSeek R1 0528

OpenAI Codex Mini is made by openai while DeepSeek R1 0528 is from deepseek. OpenAI Codex Mini has a 200K token context window compared to DeepSeek R1 0528's 164K. On pricing, OpenAI Codex Mini costs $1.5/M input tokens vs $0/M for DeepSeek R1 0528.

Our Verdict
DeepSeek R1 0528
DeepSeek R1 0528
OpenAI Codex Mini
OpenAI Codex MiniRunner-up

No community votes yet. On paper, DeepSeek R1 0528 has the edge — bigger model tier.

Too close to call
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OpenAI Codex MiniDeepSeek R1 0528

279 AI models invented the same fake scientist.

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