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GPT-4.1 Nano vs Grok 3

Compare GPT-4.1 Nano by OpenAI against Grok 3 by xAI, context windows of 1.0M vs 128K, tested across 28 shared challenges. Updated March 2026.

Which is better, GPT-4.1 Nano or Grok 3?

GPT-4.1 Nano and Grok 3 are both competitive models. Context windows: 1048K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.1 Nano and Grok 3

GPT-4.1 Nano is made by openai while Grok 3 is from xai. GPT-4.1 Nano has a 1048K token context window compared to Grok 3's 128K.

Our Verdict
GPT-4.1 Nano
GPT-4.1 Nano
Grok 3
Grok 3

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call
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GPT-4.1 NanoGrok 3
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