Model catalog profile

OpenAI: gpt-oss-20b (free) | API profile

Start with OpenAI: gpt-oss-20b (free) model ID, modality, and parameter surface, then decide whether to continue to a key check or integration test.

Provider

OpenAI

62 models in catalog

Context

131,072

global model route

Input

$0.00

USD / 1M tokens

Output

$0.00

USD / 1M tokens

What this page answers

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...

OpenAI · openai/gpt-oss-20b:free
text->text · global model route
131,072 context · $0.00 input

Before connecting

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supports include_reasoning
supports max_tokens
supports reasoning
supports seed
supports stop

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openai/gpt-oss-20b:free