Model index
OpenAI·gpt-oss

gpt-oss-120b

An open reasoning model with 117B total and 5.1B active parameters per token, for customization and tool workflows.

CurrentLanguageReasoningCodingOpen weights
MODEL NUMBER295
First public date
2025-08-05
Organization
OpenAI
Family
gpt-oss
01

Specifications

Only published specifications are shown.

Total parameters
117B
Active parameters
5.1B
Architecture
MoE
Context
131,072 tokens
Input modalities
Text
Output modalities
Text
Open weights
Yes
License
Apache-2.0
Status
Current
02

Overview

Overview

An open reasoning model with 117B total and 5.1B active parameters per token, for customization and tool workflows.

03

Architecture & capabilities

Model capabilities

ReasoningCodingTool use

API features

Adjustable reasoning
04

Release history

Open weights

gpt-oss-120b released model weights.

View source
05

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06

Sources

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