GPT-5.4 is here.

Today, we’re releasing **GPT‑5.4** in ChatGPT (as GPT‑5.4 Thinking), the API, and Codex.

We’re also releasing **GPT‑5.4 Pro** in ChatGPT and the API, for people who want maximum performance on complex tasks.

GPT‑5.4 brings together the best of our recent advances in reasoning, coding, and agentic workflows into a single frontier model. It incorporates the industry-leading coding capabilities of [GPT‑5.3‑Codex⁠](https://openai.com/index/introducing-gpt-5-3-codex/) while improving how the model works across tools, software environments, and professional tasks involving spreadsheets, presentations, and documents.

The result is a model that gets complex real work done accurately, effectively, and efficiently—delivering what you asked for with less back and forth.