GPT OSS 120BvsMuse Spark 1.3
GPT OSS 120B is cheaper than Muse Spark 1.3 at $0.18/M vs $1.25/M input tokens.
| Spec | GPT OSS 120B | Muse Spark 1.3 |
|---|---|---|
| Input price | $0.18/M tokens | $1.25/M tokens |
| Output price | $0.8/M tokens | $4.25/M tokens |
| Context window | 131K tokens | 1.0M tokens |
| Weights | Open | Closed |
| Free API (OpenRouter) | No | No |
| Released | Aug 2025 | Sep 2026 |
Our Verdict
GPT OSS 120B
Muse Spark 1.3
Not enough votes to call it. On the specs, nothing separates them.
GPT OSS 120B costs 5.3x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT OSS 120B
Input
$0.18
6.9× cheaper
Output
$0.80
5.3× cheaper
Muse Spark 1.3
Input
$1.25
Output
$4.25
GPT OSS 120B is cheaper on both: 6.9× input, 5.3× output.
Where to run it
20 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 out131k95.6% upDigitalOcean$0.06 in$0.39 out128k100% up
13 more hostsFewer hosts
Mancerfp8$0.06 in$0.50 out131k98.8% 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 out131k98.8% 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 out131k96.5% upTogether$0.15 in$0.60 out131k97.9% upCerebrasfp16$0.35 in$0.75 out131k100% upMaradegraded$0.15 in$0.75 out131k77% up
Muse Spark 1.31 host
Per million tokens. Prices and uptime via OpenRouter, checked 12 Sep 2026.
Writing DNA
Style Comparison
Similarity
31%
GPT OSS 120B uses 15.4x more emoji
GPT OSS 120B
Muse Spark 1.3
52%Vocabulary59%
19wSentence Length14w
0.28Hedging0.28
7.4Bold2.6
1.8Lists2.3
0.15Emoji0.00
0.73Headings0.48
0.17Transitions0.02
Based on 21 + 27 text responses
Research
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