Grok 3 vs GPT-4.1 Nano

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

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

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

Key Differences Between Grok 3 and GPT-4.1 Nano

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

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

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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