GPT-5.1-Codex-Mini vs Grok 4.20 Multi-Agent Beta
Compare GPT-5.1-Codex-Mini by OpenAI against Grok 4.20 Multi-Agent Beta by xAI, context windows of 400K vs 2.0M, tested across 53 shared challenges. Updated April 2026.
Which is better, GPT-5.1-Codex-Mini or Grok 4.20 Multi-Agent Beta?
GPT-5.1-Codex-Mini and Grok 4.20 Multi-Agent Beta are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $2/M for Grok 4.20 Multi-Agent Beta. Context windows: 400K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1-Codex-Mini and Grok 4.20 Multi-Agent Beta
GPT-5.1-Codex-Mini is made by openai while Grok 4.20 Multi-Agent Beta is from xai. GPT-5.1-Codex-Mini has a 400K token context window compared to Grok 4.20 Multi-Agent Beta's 2000K. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $2/M for Grok 4.20 Multi-Agent Beta.
No community votes yet. On paper, Grok 4.20 Multi-Agent Beta has the edge — newer, bigger context window.
Style Comparison
Grok 4.20 Multi-Agent Beta uses 3.4x more headings
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Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
