OpenAI Codex Mini vs DeepSeek R1
Compare OpenAI Codex Mini by OpenAI against DeepSeek R1 by DeepSeek, context windows of 200K vs 128K, tested across 10 shared challenges. Updated June 2026.
Which is better, OpenAI Codex Mini or DeepSeek R1?
OpenAI Codex Mini and DeepSeek R1 are both competitive models. OpenAI Codex Mini costs $1.5/M input tokens vs $0.55/M for DeepSeek R1. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between OpenAI Codex Mini and DeepSeek R1
OpenAI Codex Mini is made by openai while DeepSeek R1 is from deepseek. OpenAI Codex Mini has a 200K token context window compared to DeepSeek R1's 128K. On pricing, OpenAI Codex Mini costs $1.5/M input tokens vs $0.55/M for DeepSeek R1.
Per 1M tokens
DeepSeek R1 is cheaper on both — 2.7× input, 2.7× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
