Grok Code Fast 1 vs GPT-4.1 Nano
Compare Grok Code Fast 1 by xAI against GPT-4.1 Nano by OpenAI, in 3 community votes, grok code fast 1 and gpt-4.1 nano are closely matched, context windows of 256K vs 1.0M, tested across 54 shared challenges. Updated April 2026.
Which is better, Grok Code Fast 1 or GPT-4.1 Nano?
Grok Code Fast 1 and GPT-4.1 Nano are closely matched based on 3 community votes. Grok Code Fast 1 costs $0.2/M input tokens vs $0.1/M for GPT-4.1 Nano. Context windows: 256K vs 1048K tokens. Compare their real outputs side by side below.
Key Differences Between Grok Code Fast 1 and GPT-4.1 Nano
Grok Code Fast 1 is made by xai while GPT-4.1 Nano is from openai. Grok Code Fast 1 has a 256K token context window compared to GPT-4.1 Nano's 1048K. On pricing, Grok Code Fast 1 costs $0.2/M input tokens vs $0.1/M for GPT-4.1 Nano. In community voting, In 3 community votes, Grok Code Fast 1 and GPT-4.1 Nano are closely matched.
In 3 community votes, Grok Code Fast 1 and GPT-4.1 Nano are closely matched. Based on blind community voting from the Rival open dataset of 3+ human preference judgments for this pair.
Votes are tied. Grok Code Fast 1 is newer and likely incorporates more recent improvements.
GPT-4.1 Nano is 3.8x cheaper per token — worth considering if cost matters.
Style Comparison
Grok Code Fast 1 uses 6.0x more emoji
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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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clone pairs
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dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
