GPT OSS 20B

Name: GPT Opensources 20B
Availability: InStock
Author: OpenAI

Reasoning model

GPT Opensources 20B

Release date: 2025-08-06Updated: 2025-08-06 07:35:271,393

Live demo

GPT Opensources 20B is an AI model published by OpenAI, released on 2025-08-06, for Reasoning model, with 210.0B parameters, and 128K tokens context length, requiring about 42GB storage, under the Apache 2.0 license.

Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology

GPT OSS 20B

Model basics

Reasoning traces

Supported

Thinking modes

Thinking modes not supported

Context length

128K tokens

Max output length

4096 tokens

Model type

Reasoning model

Release date

2025-08-06

Model file size

42GB

MoE architecture

Yes

Total params / Active params

21B / 3.6B

Knowledge cutoff

No data

GPT OSS 20B

Open source & experience

Code license

Apache 2.0

Weights license

Apache 2.0- 免费商用授权

GitHub repo

GitHub link unavailable

Hugging Face

https://huggingface.co/openai/gpt-oss-120b

Live demo

No live demo

GPT OSS 20B

Benchmark Results

GPT OSS 20B currently shows benchmark results led by AIME 2024 (3 / 62, score 96), AIME2025 (14 / 106, score 98.70), CodeForces (9 / 16, score 2516). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.