Creator
OpenAI
Released
2025-08-05
Intelligence
23.8
Artificial Analysis Index
Coding
30.4
Artificial Analysis Index
In $/1M
$0.15
input tokens
Out $/1M
$0.60
output tokens
Blended $/1M
$0.26
3:1 blended
Speed
193
tokens / sec
Profile
License, openness, and modality — the governance layer.
License
Apache 2.0
commercial OK
Weights
Open
downloadable
Modalities
Text
Parameters
117B
total
GPT-OSS-120B is an open-weight, 116.8B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized to run on a single H100 GPU with native MXFP4 quantization. The model supports configurable reasoning depth, full chain-of-thought access, and native tool use, including function calling, browsing, and structured output generation. It achieves near-parity with OpenAI o4-mini on core reasoning benchmarks. Note: While referred to as '120b' for simplicity, it technically has 116.8B parameters.
Capability profile
Category strength across 20 domains, via LLM Stats.
Benchmark breakdown
Independent evaluation scores, normalized to 0–100.