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openai/gpt-oss-20b

20b open-weight language model from OpenAI

Capabilities

Max TokensTop-P

Cost

Community model (estimated from hardware time)

Input Parameters

frequency_penaltynumber

Frequency penalty

Default: 0
max_tokensinteger

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

Default: 2048
presence_penaltynumber

Presence penalty

Default: 0
promptstring

Prompt

Default: ""
temperaturenumber

The value used to modulate the next token probabilities.

Default: 0.1
top_pnumber

Top-p (nucleus) sampling

Default: 1
Version: 723f027d19daUpdated: 7/25/2026621.9K runs