GPT-5 Chat

Retired

OpenAI · August 2025

OpenAI retired this model on 23 July 2026, so you can't start new chats with it. Your previous conversations are still available.

The build that ran ChatGPT. Tuned for conversation, and answers straight away without thinking first.

Best for: Everyday chat
Superseded by: GPT-5.1 Chat

Context window
128,000 tokens
≈ 96,000 words · about 380 pages
Max output
16,384 tokens
≈ 12,000 words in a single answer
Knowledge cutoff
September 2024
its training cutoff

Modalities

TextInput and output
ImageInput only
AudioNot supported
VideoNot supported

Features

StreamingSupported
Function callingSupported
Structured outputsSupported
Fine-tuningNot supported

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