Using gpt-oss-120b on Open Inference

Implementation guide · GPT-OSS · OpenAI

ServerlessOpen Source

Open Inference exposes gpt-oss-120b through model ID gpt-oss-120b. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-06-30. Next refresh: weekly.

Quick Start

1
Create an account at Open Inference and generate an API key.
2
Use the Open Inference SDK or REST API to call gpt-oss-120b.
3
You'll be billed Free/1M input, Free/1M output tokens.

API Portal Model Card

Code Examples

Code examples for this provider have not been sourced yet.

Pricing on Open Inference

Type	Price (per 1M)
Input tokens	Free
Output tokens	Free

Capabilities

JSON / Tool useStructured Outputs

About gpt-oss-120b

OpenAI open-weight model with 120 billion parameters. Text-only model supporting reasoning, function calling, and structured outputs. Free for self-hosting. Released August 5, 2025.

Full model details →

Model Specs

Released2025-08-05

Parameters120B

Context131k

ArchitectureDecoder Only

Knowledge cutoff2025-08