GPT-5.1 Chat vs Grok 4.20 Multi-Agent Beta
Compare GPT-5.1 Chat by OpenAI against Grok 4.20 Multi-Agent Beta by xAI, context windows of 128K vs 2.0M, tested across 52 shared challenges. Updated April 2026.
Which is better, GPT-5.1 Chat or Grok 4.20 Multi-Agent Beta?
GPT-5.1 Chat and Grok 4.20 Multi-Agent Beta are both competitive models. GPT-5.1 Chat costs $1.25/M input tokens vs $2/M for Grok 4.20 Multi-Agent Beta. Context windows: 128K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1 Chat and Grok 4.20 Multi-Agent Beta
GPT-5.1 Chat is made by openai while Grok 4.20 Multi-Agent Beta is from xai. GPT-5.1 Chat has a 128K token context window compared to Grok 4.20 Multi-Agent Beta's 2000K. On pricing, GPT-5.1 Chat costs $1.25/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 — bigger model tier, newer, bigger context window.
Style Comparison
Grok 4.20 Multi-Agent Beta uses 26.4x more headings
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Ask them anything yourself
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178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
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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.
