o1
Nothing here. The model returned empty. We stared at it for a while.
o1 vs Grok Code Fast 1
Compare o1 by OpenAI against Grok Code Fast 1 by xAI, context windows of 128K vs 256K, tested across 54 shared challenges. Updated April 2026.
Which is better, o1 or Grok Code Fast 1?
o1 and Grok Code Fast 1 are both competitive models. o1 costs $15/M input tokens vs $0.2/M for Grok Code Fast 1. Context windows: 128K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between o1 and Grok Code Fast 1
o1 is made by openai while Grok Code Fast 1 is from xai. o1 has a 128K token context window compared to Grok Code Fast 1's 256K. On pricing, o1 costs $15/M input tokens vs $0.2/M for Grok Code Fast 1.
Our Verdict
Grok Code Fast 1
o1Runner-up
No community votes yet. On paper, Grok Code Fast 1 has the edge — newer, bigger context window.
Grok Code Fast 1 is 40x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
98%
Grok Code Fast 1 uses 6.0x more emoji
o1
Grok Code Fast 1
64%Vocabulary60%
16wSentence Length17w
0.76Hedging0.97
5.0Bold2.8
2.6Lists2.5
0.00Emoji0.06
0.44Headings0.89
0.40Transitions0.11
Based on 13 + 23 text responses
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