gpt-oss-120b: Responses
By model
gpt-oss-120b
Model details for gpt-oss-120b. Function calling, batch tasks, and reasoning with a 131K context window.
POST
gpt-oss-120b: Responses
OpenAI’s gpt-oss-120b is an open-weight Mixture-of-Experts model with 117B total parameters (5.1B active per token), served on ZeroGPU for general text generation. It reasons through a problem before answering and returns that reasoning trace alongside the final answer, and it supports function calling, batch tasks, and a 131,072-token context window. When a task needs frontier-level reasoning or tool use beyond what the smaller edge models cover, this is the model.References: Model docs • Terms • Privacy
Authorizations
Headers
Optional project identifier. Scopes the request to a specific project when provided.
Body
application/json
Model identifier (fixed for this playground). Use request examples to change use cases.
Allowed value:
"gpt-oss-120b"Example:
"gpt-oss-120b"
Multi-line text or document content to send to the model.
Required string length:
1 - 131072Maximum number of tokens to generate in the response.
Required range:
x >= 1Example:
800
Response
Success
The response is of type object.

