---
source: tui/src/app/tests/model_catalog.rs
assertion_line: 289
expression: model_migration_copy_to_plain_text(&copy)
---
Introducing GPT-5.4

Codex just got an upgrade with GPT-5.4, our most capable model for professional work. It outperforms prior models while being more token efficient, with notable improvements on long-running tasks, tool calling, computer use, and frontend development.

Learn more: https://openai.com/index/introducing-gpt-5-4

You can always keep using GPT-5.3-Codex if you prefer.
