OpenAI Codex Mini vs xAI: Grok 4
Compare OpenAI Codex Mini by OpenAI against xAI: Grok 4 by xAI, in 2 community votes, openai codex mini and xai: grok 4 are closely matched, context windows of 200K vs 256K, tested across 10 shared challenges. Updated June 2026.
Which is better, OpenAI Codex Mini or xAI: Grok 4?
OpenAI Codex Mini and xAI: Grok 4 are closely matched based on 2 community votes. OpenAI Codex Mini costs $1.5/M input tokens vs $3/M for xAI: Grok 4. Context windows: 200K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between OpenAI Codex Mini and xAI: Grok 4
OpenAI Codex Mini is made by openai while xAI: Grok 4 is from xai. OpenAI Codex Mini has a 200K token context window compared to xAI: Grok 4's 256K. On pricing, OpenAI Codex Mini costs $1.5/M input tokens vs $3/M for xAI: Grok 4. In community voting, In 2 community votes, OpenAI Codex Mini and xAI: Grok 4 are closely matched.
In 2 community votes, OpenAI Codex Mini and xAI: Grok 4 are closely matched. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Per 1M tokens
OpenAI Codex Mini is cheaper on both — 2.0× input, 2.5× output
Genuinely even. Both are strong choices.
