gpt-oss-120b

gpt-oss-120b

Developer	OpenAI
Release date	August 5, 2025
Family	gpt-oss
Size class
Context window	131K tokens
Max output	66K tokens
Input	Text
Output	Text
Knowledge cutoff	2024-06
Weights	Open weights
Website	openai.com
Links	Model card Docs Hugging Face

Part of a series on

input: $0.15
cached: $0.075
output: $0.60
Context: 131Ktokens
Released: 1y ago
Size: 120Bparameters

Specifications

Model

Developer: OpenAI
Family: gpt-oss
Type: Language model
Released: August 5, 2025
Model ID: openai/gpt-oss-120b

Capabilities

Input → output: Text → Text
Native context: 128K tokens
Max output: 66K tokens
Tokenizer: GPT
Knowledge cutoff: 2024-06

Weights

Openness: Open weights
Size: 120B
Hugging Face: openai/gpt-oss-120b

Lineage

Models built on this: GPT OSS Safeguard 120Bfine-tuned from

Sources:models.devOpenRouter

Metadata synced Nov 7, 2026, 8:00 PM UTC

To give you the best experience, we use cookies for personalization, insights, and performance. Learn more.