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GPT‑5.1-Codex-Max is purpose-built for agentic coding.
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.1-codex-max', prompt: 'Why is the sky blue?'})Try out GPT 5.1 Codex Max by OpenAI. Usage is billed to your team at API rates. Free users get $5 of credits every 30 days, and you are considered a free user if you haven't made a payment.
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