OpenAI: gpt-oss-20b (free)
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of…
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Open / InstallLast updated July 27, 2026
Description
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
Author
openai
Platform
api
Pricing model
free
Categories
Productivity
Tags
openrouter
llm
openai
text
Capabilities
- 131,072 token context