openai

OpenAI: gpt-oss-20b (free)

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...

Quality Score
79/100
composite of price, context, capability
Input Price
Free
per 1M tokens
Output Price
Free
per 1M tokens
Context Window
131,072
tokens
Model ID
openai/gpt-oss-20b:free
Vendor
openai
Tokenizer
GPT
Input Modalities
text
Output Modalities
text
Max Output
8,192 tokens
Tool Calling
✓ supported
Structured Output
not supported
Reasoning Mode
✓ supported
Vision
text only
Audio
no
Moderated
yes

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