GPT-5.4 Pro
by OpenAI
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token
Models
GPT-5.4 Pro
Added 10 July 2026
Overview
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...
How to use / API access
Call via OpenRouter with model id `openai/gpt-5.4-pro`.
- openrouter ·
openai/gpt-5.4-proDocs
OpenRouter id: openai/gpt-5.4-pro
Notes
GPT-5.4 Pro is listed in the EDNA Models directory from the OpenRouter catalogue.
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