Claude 3.7 Thinking SonnetvsGPT OSS 120B
GPT OSS 120B is cheaper than Claude 3.7 Thinking Sonnet at $0.18/M vs $6/M input tokens.
| Spec | Claude 3.7 Thinking Sonnet | GPT OSS 120B |
|---|---|---|
| Input price | $6/M tokens | $0.18/M tokens |
| Output price | $30/M tokens | $0.8/M tokens |
| Context window | 200K tokens | 131K tokens |
| Released | Feb 2025 | Aug 2025 |
| MMLU | 77.1% | Matches/exceeds o4-mini |
Our Verdict
GPT OSS 120B
Claude 3.7 Thinking SonnetRunner-up
Not enough votes to call it. On the specs, GPT OSS 120B has the edge: bigger model tier, newer.
GPT OSS 120B costs 38x less per token.
Too close to call
API pricing
Cost per 1M tokens
Claude 3.7 Thinking Sonnet
Input
$6.00
Output
$30.00
GPT OSS 120B
Input
$0.18
33× cheaper
Output
$0.80
38× cheaper
GPT OSS 120B is cheaper on both — 33× input, 38× output
Writing DNA
Style Comparison
Similarity
34%
GPT OSS 120B uses 15.4x more emoji
Claude 3.7 Thinking Sonnet
GPT OSS 120B
62%Vocabulary52%
51wSentence Length19w
0.62Hedging0.28
2.0Bold7.4
4.1Lists1.8
0.00Emoji0.15
1.63Headings0.73
0.17Transitions0.17
Based on 26 + 21 text responses
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