GPT 5.5 Pro
GPT 5.5 Pro is the higher-capability tier of the GPT-5.5 family, applying more compute per request for deeper analysis on the hardest tasks while keeping the same modalities and APIs as standard GPT-5.5.
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.5-pro', prompt: 'Why is the sky blue?'})Direct request success rate on AI Gateway and per-provider. Visit the docs for more info.