GPT 5.4 Pro
GPT 5.4 Pro is the highest-capability tier of the GPT-5.4 family, designed for maximum performance on the most complex tasks with extended reasoning and GPT-5.4 agentic capabilities.
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5.4-pro', prompt: 'Why is the sky blue?'})Playground
Try out GPT 5.4 Pro by OpenAI. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.