GPT OSS 20B

GPT OSS 20B is OpenAI's smaller open-weight model with roughly 21 billion total parameters and 3.6 billion active per token, designed for low-latency, agentic, and on-device workloads. Your use subject to OpenAI's Terms & Privacy Policies.

ReasoningTool Use

Use with AI Gateway View docs

index.ts

import { streamText } from 'ai'

const result = streamText({
  model: 'openai/gpt-oss-20b',
  prompt: 'Why is the sky blue?'
})

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