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GPT OSS 120B

OpenAI

Released
August 5, 2025
Data date
September 8, 2026
Intelligence
30.6 / 100
Overall score
Speed
221.4 tokens/s
Output throughput
Price
$0.1 · $0.5
Input · Output / 1M tokens
Input
Text
Output
Text

GPT OSS 120B marked OpenAI’s return to open-weight language models for the first time since GPT-2. Its Apache 2.0 license allows customization and deployment on your own infrastructure. Unlike OpenAI’s closed reasoning models, it also exposes the full chain of thought.

OpenAI says the quantized 120B version fits on a single GPU with 80 GB of memory. GPT OSS 20B needs less hardware. Both models run locally or through third-party hosts rather than being offered as models in ChatGPT or the OpenAI API.

Position
Rank 64 of 86
Index score
30.6 / 100
1.Claude Fable 5.193.5 / 100
2.Claude Fable 593.2 / 100
3.Claude Opus 591.3 / 100
4.Claude Sonnet 5.587.9 / 100
5.Claude Opus 5.585.1 / 100
6.Kimi K385.1 / 100
7.Gemini 3.7 Flash83.1 / 100
8.GPT-5.6 Sol81.9 / 100
9.Claude Opus 4.878.8 / 100
10.Gemini 3.8 Flash77.4 / 100
11.Qwen 3.8 Max 090276.5 / 100
12.GPT-5.575.8 / 100
13.Claude Opus 4.772.6 / 100
14.Gemini 3.6 Flash70.4 / 100
15.Grok 4.669.7 / 100
16.Qwen 3.7 Max68.7 / 100
17.GPT-5.268.3 / 100
18.Gemini 3.1 Pro Preview67.5 / 100
19.GPT-5.6 Terra67.5 / 100
20.Gemini 3.5 Flash67.4 / 100
21.Gemini 3 Pro66.3 / 100
22.GLM-5.365.3 / 100
23.GPT-5.6 Luna64.4 / 100
24.Grok 4.763.7 / 100
25.DeepSeek-V4.1-Flash62.8 / 100
26.Gemini 3 Flash Preview62.7 / 100
27.GPT-5.462.7 / 100
28.GLM-5.3-Flash62.4 / 100
29.Claude Sonnet 561.6 / 100
30.Kimi K2.659.2 / 100
31.Grok 4.558.6 / 100
32.MiniMax M358.3 / 100
33.GPT-557.6 / 100
34.Claude Sonnet 4.655.9 / 100
35.Qwen 3.8 27B53.7 / 100
36.GLM-5.252.6 / 100
37.GPT-6 Luna50.7 / 100
38.Nemotron 3 Ultra49.8 / 100
39.GPT-6 Sol49.6 / 100
40.DeepSeek-V4-Pro49.6 / 100
41.Inkling Small48.5 / 100
42.Kimi K2.548.2 / 100
43.Inkling47.8 / 100
44.o346.9 / 100
45.GPT-5 mini46.1 / 100
46.GLM-546 / 100
47.GLM-5.144.2 / 100
48.Claude Opus 4.543.7 / 100
49.GPT-5.4 mini42.3 / 100
50.MiMo-V2.5-Pro42.2 / 100
51.Grok 4.20 Reasoning39.3 / 100
52.Grok 338.7 / 100
53.Gemini 3.1 Flash-Lite38.5 / 100
54.Gemini 3.5 Flash-Lite38.2 / 100
55.Grok 4.336.8 / 100
56.MiniMax M2.135.5 / 100
57.MiniMax M2.735 / 100
58.MiMo-V2.533.6 / 100
59.GLM-4.733.4 / 100
60.o4-mini33.3 / 100
61.GPT-4.132.6 / 100
62.Ling 3.0 Flash32.2 / 100
63.o131.4 / 100
64.GPT OSS 120B30.6 / 100
65.Kimi K2 Thinking28.8 / 100
66.MiniMax M2.528.2 / 100
67.DeepSeek-R127.3 / 100
68.GLM-4.625.8 / 100
69.GLM-4.525.6 / 100
70.Kimi K2 071124.4 / 100
71.GPT-5.4 nano24 / 100
72.DeepSeek-V3.222.4 / 100
73.Mistral Large 319.8 / 100
74.GPT-4.1 mini19.7 / 100
75.o3-mini19.7 / 100
76.DeepSeek-V3 032418.8 / 100
77.DeepSeek-V317.8 / 100
78.GPT OSS 20B15.1 / 100
79.GPT-5 nano12.4 / 100
80.Command A10.5 / 100
81.Mistral Medium 3.59.5 / 100
82.Llama 4 Scout6.1 / 100
83.Mistral Small 3.14.7 / 100
84.GPT-4.1 nano4 / 100
85.Command R+2.5 / 100
86.GPT-4o mini2.3 / 100
Methodology and source

The index averages rank percentiles from 10 documented comparison cohorts.