GPT-5 is the standard tier of the GPT-5 model family, unifying advanced reasoning, coding, and multimodal capabilities in a single architecture that surpasses its predecessors across benchmarks while maintaining broad general-purpose utility.
import { streamText } from 'ai'
const result = streamText({ model: 'openai/gpt-5', prompt: 'Why is the sky blue?'})GPT-5 launched on August 1, 2025 as a generational leap over the GPT-4 family. Available through AI Gateway, it brings together advances in reasoning depth, coding proficiency, instruction following, and multimodal understanding in a single model.
The model supports a context window of 400K tokens, enabling developers to pass extensive codebases, long documents, or rich conversation histories in a single request. Combined with improved instruction adherence, GPT-5 follows complex multi-constraint specifications more reliably than its predecessors.
As the standard tier of the GPT-5 family, it sits alongside GPT-5 mini, GPT-5 nano, and GPT-5 pro, each targeting different points on the capability-cost spectrum. GPT-5 is the default choice when full GPT-5 family capability is the priority.