Codex using GPT5.3 Spark when it shows GPT5.5 being used

Open 💬 2 comments Opened May 12, 2026 by merceralex397-collab

What version of Codex CLI is running?

0.130

What subscription do you have?

Pro

Which model were you using?

GPT-5.5 Medium

What platform is your computer?

Windows 11

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

Powershell

What issue are you seeing?

I used /goal on GPT 5.5 Medium, but noticed the speed was insanely high so I was suspicious.

After checking my usage page on chatgpt.com/codex/settings/usage I noticed my 5.3 spark usage decreasing, not my regular allowance.

I ran /status in the CLI and it showed GPT 5.5 Medium.

What steps can reproduce the bug?

Uploaded thread: 019e19c6-0ebf-7f42-b5e0-9074ddc69a98

What is the expected behavior?

GPT 5.5 Medium being used, ie the model I actually selected.

Additional information

_No response_

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