# Codex 0.153.1

By Steven Van · 2026-09-03

New Features Added support for configuring GPT-6-Astra through the API without changing the default model or showing it in the model picker.

The latest update to [Codex](<https://creatorstoolbox.com/tools/openai-codex>) lets developers configure GPT-6-Astra through the API, without it becoming the default model or appearing in the model picker. The change, detailed in the [0.153.1 release notes](<https://github.com/openai/codex/releases/tag/rust-v0.153.1>), backports the GPT-6-Astra model catalog to the 0.153 branch.

[![](<https://avatars.githubusercontent.com/in/15368?s=60&v=4>)](<https://github.com/openai/codex/releases/tag/rust-v0.153.1>)

![Codex](<https://creatorstoolbox.com/images/codex.png>)

Codex

Cloud-based AI coding agent by OpenAI — assign tasks and Codex writes, tests, and ships code in a sandboxed environment.

[View Codex →](<https://creatorstoolbox.com/tools/openai-codex>)

[Original source](<https://github.com/openai/codex/releases/tag/rust-v0.153.1>)

[Read Codex 0.153.1 on Creators Toolbox](<https://creatorstoolbox.com/blog/codex-codex-0-153-1>)

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Canonical source: https://creatorstoolbox.com/blog/codex-codex-0-153-1