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openai/gpt-oss-20b

20b open-weight language model from OpenAI

Capabilities

Max Tokens Top-P

Cost

Community model (estimated from hardware time)

Input Parameters

frequency_penalty number

Frequency penalty

Default: 0
max_tokens integer

The maximum number of tokens the model should generate as output.

Default: 2048
presence_penalty number

Presence penalty

Default: 0
prompt string

Prompt

Default: ""
temperature number

The value used to modulate the next token probabilities.

Default: 0.1
top_p number

Top-p (nucleus) sampling

Default: 1
Version: 73e7f568d3c5 Updated: 2/26/2026 231.6K runs