GPT OSS 20B vs Grok Code Fast 1
Compare GPT OSS 20B by OpenAI against Grok Code Fast 1 by xAI, context windows of 131K vs 256K, tested across 54 shared challenges.
Our Verdict
GPT OSS 20B
Grok Code Fast 1
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
GPT OSS 20B is 15x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT OSS 20B
Input
$0.02
10× cheaper
Output
$0.10
15× cheaper
Grok Code Fast 1
Input
$0.20
Output
$1.50
GPT OSS 20B is cheaper on both — 10× input, 15× output
Writing DNA
Style Comparison
Similarity
33%
Grok Code Fast 1 uses 3.7x more hedging
GPT OSS 20B
Grok Code Fast 1
54%Vocabulary60%
17wSentence Length17w
0.26Hedging0.97
5.9Bold2.8
3.3Lists2.5
0.10Emoji0.06
0.75Headings0.89
0.32Transitions0.11
Based on 21 + 23 text responses
Research
What we learned reading every model
FAQ
