Claude Sonnet 3.6 (2022-10-22) vs GPT-5.1-Codex-Mini
Compare Claude Sonnet 3.6 (2022-10-22) by Anthropic against GPT-5.1-Codex-Mini by OpenAI, context windows of 200K vs 400K, tested across 54 shared challenges.
Our Verdict
GPT-5.1-Codex-Mini
Claude Sonnet 3.6 (2022-10-22)Runner-up
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, newer, bigger context window.
Slight edge
API pricing
Cost per 1M tokens
Claude Sonnet 3.6 (2022-10-22)
Input
$3.00
Output
$15.00
GPT-5.1-Codex-Mini
Input
$1.50
2.0× cheaper
Output
$6.00
2.5× cheaper
GPT-5.1-Codex-Mini is cheaper on both — 2.0× input, 2.5× output
Writing DNA
Style Comparison
Similarity
60%
GPT-5.1-Codex-Mini uses 9.9x more bold
Claude Sonnet 3.6 (2022-10-22)
GPT-5.1-Codex-Mini
66%Vocabulary65%
74wSentence Length20w
0.72Hedging0.56
0.3Bold3.3
8.9Lists3.4
0.00Emoji0.00
0.06Headings0.08
0.09Transitions0.05
Based on 21 + 13 text responses
Research
What we learned reading every model
FAQ
