Chatbox
Chatbox is a popular desktop AI client that supports OpenAI-compatible endpoints via the "OpenAI API Compatible" mode.
Official docs: https://docs.chatboxai.app/en/guides/providers
1. Open settings
Click the Settings icon in the sidebar, then go to the Model tab.
2. Select the AI provider
In the Model Provider dropdown, select OpenAI API Compatible.
3. Fill in the connection details
| Field | Value |
|---|---|
| API Key | Your codex_... or sk-... key |
| API Host | https://codex.openai.com |
| Model | gpt-5-codex-mini or another available model |
WARNING
The API Host field takes the root URL only — do not include /v1. Example: https://codex.openai.com
4. Save and verify
Save the settings and start a conversation to confirm responses are working.
Notes
- Chatbox appends the API path automatically; only the root URL goes in the API Host field
- Available models can be found via
GET /v1/models