GPT-5 Codex vs Grok 3 Mini Beta
Compare GPT-5 Codex by OpenAI against Grok 3 Mini Beta by xAI, tested across 13 shared challenges. Updated April 2026.
Which is better, GPT-5 Codex or Grok 3 Mini Beta?
GPT-5 Codex and Grok 3 Mini Beta are both competitive models. Compare their real outputs side by side below.
Key Differences Between GPT-5 Codex and Grok 3 Mini Beta
GPT-5 Codex is made by openai while Grok 3 Mini Beta is from xai.
Our Verdict
GPT-5 Codex
Grok 3 Mini BetaRunner-up
No community votes yet. On paper, GPT-5 Codex has the edge — bigger model tier, newer.
Too close to call
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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