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gpt-oss-120b (free)

Name: gpt-oss-120b (free)
Author: OpenAI

by OpenAI

gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. I

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Models

gpt-oss-120b (free)

Added 10 July 2026

#openai

Overview

gpt-oss-120b is an open-weight, 117B-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...

How to use / API access

Call via OpenRouter with model id `openai/gpt-oss-120b:free`.

openrouter · openai/gpt-oss-120b:free Docs

OpenRouter id: openai/gpt-oss-120b:free

Benchmarks

Intelligence Index (artificial-analysis) : 23.8 index
Coding Index (artificial-analysis) : 30.4 index
Agentic Index (artificial-analysis) : 13.2 index
Design Arena 3d (other) : 976 elo · #92
Design Arena codecategories (other) : 1007 elo · #98
Design Arena dataviz (other) : 1041 elo · #88
Design Arena gamedev (other) : 1059 elo · #85

Notes

gpt-oss-120b (free) is listed in the EDNA Models directory from the OpenRouter catalogue.

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