GPT-5.2 vs Grok 4.20 Beta

Compare GPT-5.2 by OpenAI against Grok 4.20 Beta by xAI, context windows of 400K vs 2.0M, tested across 52 shared challenges. Updated March 2026.

Which is better, GPT-5.2 or Grok 4.20 Beta?

GPT-5.2 and Grok 4.20 Beta are both competitive models. GPT-5.2 costs $1.75/M input tokens vs $2/M for Grok 4.20 Beta. Context windows: 400K vs 2000K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-5.2 and Grok 4.20 Beta

GPT-5.2 is made by openai while Grok 4.20 Beta is from xai. GPT-5.2 has a 400K token context window compared to Grok 4.20 Beta's 2000K. On pricing, GPT-5.2 costs $1.75/M input tokens vs $2/M for Grok 4.20 Beta.

Our Verdict
Grok 4.20 Beta
Grok 4.20 Beta
GPT-5.2
GPT-5.2Runner-up

No community votes yet. On paper, Grok 4.20 Beta has the edge — newer, bigger context window.

Too close to call
FAQ

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