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.
ReasoningTool UseImplicit CachingFile InputWeb SearchVision (Image)
index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.5-pro', prompt: 'Why is the sky blue?'})Providers
Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.
| Provider |
|---|
 OpenAI | 1M | 93.8s | 107tps | $30.00/M | $180.00/M | $14/K + input costs | — | +4 | 04/24/2026 |