GPT 5
by OpenAI
OpenAI's flagship — fast responses with deep reasoning
GPT-5 is OpenAI's flagship unified model, pairing a fast responder with a deeper reasoning model behind an automatic router. It brought state-of-the-art performance in coding, math, and writing, with reduced hallucinations and strong tool use.
- ~400K-token context (API)
- Unified fast + reasoning router
- State-of-the-art coding and writing