Error status code 400 when trying to use MistralAI Devstral

Question

### What version of Codex is running?

0.1.2505172129

### Which model were you using?

devstral-small-2505

### What platform is your computer?

`darwin` | `x64` | `21.6.0`

### What steps can reproduce the bug?

- ```
  Explain the codebase
  ```
  - `1 reasoning` | `1 tool`
- ```
  Could you explain its purpose and what are the coding styles?
  ```
  - `0 reasoning` | `11 tool`

### What is the expected behavior?

No error.

### What do you see instead?

Error.

### Additional information

_N