gpt-oss-20b
OpenAI
openai/gpt-oss-20bGPT-OSS-20B is OpenAI's smaller open-weight model (around 20B parameters), designed to run on more modest hardware while retaining solid reasoning and coding ability for local or self-hosted use cases.
Cost rate
0.1x
Context
131K
Released
Aug 5, 2025
Input
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Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.