GPT-5.4
by OpenAI
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for.
Models
GPT-5.4
Added 10 July 2026
Overview
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
How to use / API access
Call via OpenRouter with model id `openai/gpt-5.4`.
- openrouter ·
openai/gpt-5.4Docs
OpenRouter id: openai/gpt-5.4
Benchmarks
- Coding Index (artificial-analysis) : 71.1 index
- Design Arena 3d (other) : 1131 elo · #72
- Design Arena asciiart (other) : 1219 elo · #21
- Design Arena codecategories (other) : 1228 elo · #42
- Design Arena dataviz (other) : 1251 elo · #29
Notes
GPT-5.4 is listed in the EDNA Models directory from the OpenRouter catalogue.
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