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openai/gpt-oss-120b

gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward...

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131.1K max output
Input $0.04/M · Output $0.18/M
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API details and access

Model Details

ProviderOpenAI
TypeLlm
Model IDopenai/gpt-oss-120b

Capabilities

InputText
OutputText
Context-
Max Output131,072
VisionNot supported
Function CallingSupported

Access details

Responses API
Base URLhttps://api.sandbase.ai
API Endpoint/v1/responses
{
  "model": "openai/gpt-oss-120b",
  "instructions": "You are a helpful assistant.",
  "input": "Hello",
  "max_output_tokens": 512
}

Pricing

Input$0.04 / 1M tokens
Output$0.18 / 1M tokens

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