Claude Sonnet 4.6vsGPT OSS 120B
GPT OSS 120B is cheaper than Claude Sonnet 4.6 at $0.18/M vs $3/M input tokens.
| Spec | Claude Sonnet 4.6 | GPT OSS 120B |
|---|---|---|
| Input price | $3/M tokens | $0.18/M tokens |
| Output price | $15/M tokens | $0.8/M tokens |
| Context window | 1.0M tokens | 131K tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Aug 2025 |
Our Verdict
Claude Sonnet 4.6
GPT OSS 120B
Not enough votes to call it. On the specs, nothing separates them.
GPT OSS 120B costs 19x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Claude Sonnet 4.6
Input
$3.00
Output
$15.00
GPT OSS 120B
Input
$0.18
17× cheaper
Output
$0.80
19× cheaper
GPT OSS 120B is cheaper on both: 17× input, 19× output.
Where to run it
23 hosts, cheapest first
GPT OSS 120B19 hosts
AkashMLbf16$0.03 in$0.17 out131k100% upCoreWeavefp4$0.03 in$0.17 out131k100% upDekaLLMbf16$0.03 in$0.18 out131k99.2% upDeepInfrabf16$0.04 in$0.17 out131k99.9% upNovitafp4$0.05 in$0.25 out131k95.7% upDigitalOcean$0.06 in$0.39 out128k100% up
13 more hostsFewer hosts
Mancerfp8$0.06 in$0.50 out131k98.7% 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 out131k98.9% upAmazon Bedrock$0.15 in$0.60 out131k100% upGroq$0.15 in$0.60 out131k100% upNebiusfp4$0.15 in$0.60 out131k99.8% upPhala$0.15 in$0.60 out131k96.1% upSiliconFlowfp8$0.15 in$0.60 out131k96.1% upTogether$0.15 in$0.60 out131k97.7% upCerebrasfp16$0.35 in$0.75 out131k100% upMaradegraded$0.15 in$0.75 out131k77.9% up
Per million tokens. Prices and uptime via OpenRouter, checked 12 Sep 2026.
Writing DNA
Style Comparison
Similarity
62%
GPT OSS 120B uses 8.6x more transitions
Claude Sonnet 4.6
GPT OSS 120B
56%Vocabulary52%
36wSentence Length19w
0.53Hedging0.28
5.1Bold7.4
3.4Lists1.8
0.19Emoji0.15
2.10Headings0.73
0.02Transitions0.17
Based on 23 + 21 text responses
Research
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