GPT OSS 120B vs Grok Code Fast 1
Compare GPT OSS 120B by OpenAI against Grok Code Fast 1 by xAI, in 17 community votes, grok code fast 1 wins 54% of head-to-head duels, context windows of 131K vs 256K, tested across 54 shared challenges.
Reasoning: GPT OSS 120B wins 63% of votes
Web Design: Grok Code Fast 1 wins 100% of votes
Image Generation: GPT OSS 120B and Grok Code Fast 1 are tied
Our Verdict
Grok Code Fast 1Winner
GPT OSS 120BRunner-up
Grok Code Fast 1 has the edge overall. In 17 blind votes, Grok Code Fast 1 wins 54% of the time.
Pick GPT OSS 120B for Reasoning. Pick Grok Code Fast 1 for Web Design.
Slight edge
API pricing
Cost per 1M tokens
GPT OSS 120B
Input
$0.18
1.1× cheaper
Output
$0.80
1.9× cheaper
Grok Code Fast 1
Input
$0.20
Output
$1.50
GPT OSS 120B is cheaper on both — 1.1× input, 1.9× output
Writing DNA
Style Comparison
Similarity
36%
Grok Code Fast 1 uses 3.5x more hedging
GPT OSS 120B
Grok Code Fast 1
52%Vocabulary60%
19wSentence Length17w
0.28Hedging0.97
7.4Bold2.8
1.8Lists2.5
0.15Emoji0.06
0.73Headings0.89
0.17Transitions0.11
Based on 21 + 23 text responses
Research
What we learned reading every model
FAQ
