Claude Opus 4.1vsGPT OSS 120B
GPT OSS 120B is cheaper than Claude Opus 4.1 at $0.18/M vs $15/M input tokens.
| Spec | Claude Opus 4.1 | GPT OSS 120B |
|---|---|---|
| Input price | $15/M tokens | $0.18/M tokens |
| Output price | $75/M tokens | $0.8/M tokens |
| Context window | 200K tokens | 131K tokens |
| Parameters | Not disclosed | 117B (5.1B active) |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | Aug 2025 | Aug 2025 |
Our Verdict
Claude Opus 4.1
GPT OSS 120B
Not enough votes to call it. On the specs, nothing separates them.
GPT OSS 120B costs 94x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
GPT OSS 120B
Input
$0.18
83× cheaper
Output
$0.80
94× cheaper
GPT OSS 120B is cheaper on both: 83× input, 94× output.
Where to run it
21 hosts, cheapest first
GPT OSS 120B19 hosts
AkashMLbf16$0.03 in$0.17 out131k100% upCoreWeavefp4$0.03 in$0.17 out131k99.9% upDekaLLMbf16$0.03 in$0.18 out131k98.9% upDeepInfrabf16$0.04 in$0.17 out131k99.9% upNovitafp4$0.05 in$0.25 out131k95% upDigitalOcean$0.06 in$0.39 out128k100% up
13 more hostsFewer hosts
Mancerfp8$0.06 in$0.50 out131k98.9% upGoogle Vertex AI$0.09 in$0.36 out131k99.9% upBasetenfp4$0.10 in$0.50 out128k100% upParasailfp4$0.10 in$0.75 out131k100% upSambaNova$0.14 in$0.95 out131k97.9% upAmazon Bedrock$0.15 in$0.60 out131k95.8% upGroq$0.15 in$0.60 out131k100% upNebiusfp4$0.15 in$0.60 out131k99.7% upPhala$0.15 in$0.60 out131k95.3% upTogether$0.15 in$0.60 out131k95.5% upCerebrasfp16$0.35 in$0.75 out131k100% upSiliconFlowfp8degraded$0.15 in$0.60 out131k97% upMaradegraded$0.15 in$0.75 out131k70.4% up
Per million tokens. Prices and uptime via OpenRouter, checked 12 Sep 2026.
Writing DNA
Style Comparison
Similarity
29%
Claude Opus 4.1 uses 5.3x more emoji
Claude Opus 4.1
GPT OSS 120B
63%Vocabulary52%
64wSentence Length19w
0.72Hedging0.28
4.5Bold7.4
5.3Lists1.8
0.81Emoji0.15
1.42Headings0.73
0.16Transitions0.17
Based on 26 + 21 text responses
Research
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FAQ
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