The new coding model is the first time the brand has found its own models can be instrumental in its own development.
ChatGPT’s latest model, built for developers and coders, was “instrumental in creating itself », according to OpenAI. The latest update, ChatGPT 5.3 Codex, is aimed at developers who want tools to write and develop code faster than ever.
The blog post from OpenAI says, “The Codex team used early versions to debug its own training, manage its own deployment, and diagnose test results and evaluations — our team was blown away by how much Codex was able to accelerate its own development.”
ChatGPT wasn’t the primary development tool for this latest model, but GPT 5.
