Astra unavailable in Codex 0.154.0 although it works in ChatGPT

What version of Codex CLI is running?

0.154

What subscription do you have?

Pro

Which model were you using?

this is the issue

What platform is your computer?

Linux 5.14.0-687.12.1.el9_8.x86_64 x86_64 x86_64

What terminal emulator and version are you using (if applicable)?

No response

What issue are you seeing?

Title: Astra unavailable in Codex 0.154.0 although it works in ChatGPT
Environment:

• Codex CLI 0.154.0
• Linux x86_64, RHEL/EL9 kernel
• Authenticated using ChatGPT
• Same ChatGPT account has Astra available in regular ChatGPT on macOS and phone
  Problem:
  codex -m gpt-6-astra starts and displays gpt-6-astra, but the first prompt fails with:
  The 'gpt-6-astra' model requires a newer version of Codex. Please upgrade to the latest app or CLI and try again.
  Codex also reports:
  Model metadata for 'gpt-6-astra' not found.
  The model picker does not list Astra. Rebuilding ~/.codex/models_cache.json does not fix it.
  codex --version reports codex-cli 0.154.0.
  Expected: Astra should be usable because the account has Astra access and the installed Codex version is current.

What steps can reproduce the bug?

Uploaded thread: 01a09f84-b1e2-7dc2-94f9-08452e58d1e3

What is the expected behavior?

Astra available

Additional information

No response

Reproduce the failure with codex -m gpt-6-astra on Linux and inspect ~/.codex/models_cache.json alongside the model picker output. Trace how Codex CLI discovers model metadata and handles the newer-version error. Done means Astra appears in the picker and the first prompt succeeds for an account with access.