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OpenAI: GPT-5 Chat

openai/gpt-5-chat

Released Aug 7, 2025Knowledge cutoff Sep 30, 2024128,000 context
$1.25/M input tokens$10/M output tokens$10/K web search

GPT-5 Chat is designed for advanced, natural, multimodal, and context-aware conversations for enterprise applications.

Recent activity on GPT-5 Chat

Total usage per day on OpenRouter

Prompt
10.2B
Completion
532M

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.