GPT OSS 120BvsKimi K2
GPT OSS 120B is cheaper than Kimi K2 at $0.18/M vs $0.57/M input tokens.
| Spec | GPT OSS 120B | Kimi K2 |
|---|---|---|
| Input price | $0.18/M tokens | $0.57/M tokens |
| Output price | $0.8/M tokens | $2.3/M tokens |
| Context window | 131K tokens | — |
| Weights | Open | Open |
| Free API (OpenRouter) | No | No |
| Released | Aug 2025 | Jul 2025 |
Our Verdict
GPT OSS 120B
Kimi K2
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
API pricing
Cost per 1M tokens
GPT OSS 120B
Input
$0.18
3.2× cheaper
Output
$0.80
2.9× cheaper
Kimi K2
Input
$0.57
Output
$2.30
GPT OSS 120B is cheaper on both: 3.2× input, 2.9× output.
Where to run it
19 hosts, cheapest first
GPT OSS 120B18 hosts
AkashMLbf16$0.03 in$0.17 out131k99.9% upCoreWeavefp4$0.03 in$0.17 out131k99.9% upDeepInfrabf16$0.04 in$0.17 out131k99.4% upDigitalOcean$0.06 in$0.39 out128k99.7% upMancerfp8$0.06 in$0.50 out131k99.6% upGoogle Vertex AI$0.09 in$0.36 out131k99.9% up
12 more hostsFewer hosts
Basetenfp4$0.10 in$0.50 out128k100% upParasailfp4$0.10 in$0.75 out131k100% upSambaNova$0.14 in$0.95 out131k96.9% upAmazon Bedrock$0.15 in$0.60 out131k98.1% upGroq$0.15 in$0.60 out131k100% upNebiusfp4$0.15 in$0.60 out131k96.2% upTogether$0.15 in$0.60 out131k98.8% upCerebrasfp16$0.35 in$0.75 out131k100% upNovitafp4degraded$0.05 in$0.25 out131k86.7% upSiliconFlowfp8degraded$0.05 in$0.45 out131k84.3% upPhaladegraded$0.15 in$0.60 out131k88.8% upMaradegraded$0.15 in$0.75 out131k86% up
Kimi K21 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
48%
Kimi K2 uses 3.5x more emoji
GPT OSS 120B
Kimi K2
52%Vocabulary66%
19wSentence Length19w
0.28Hedging0.34
7.4Bold3.3
1.8Lists3.4
0.15Emoji0.54
0.73Headings0.48
0.17Transitions0.05
Based on 21 + 28 text responses
Research
What we learned reading every model
FAQ
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