AionUI
Use AionUI with a Lovely Router API key: add it as an OpenAI-compatible provider in one click or by hand, then add Claude, GPT and Gemini models.
AionUI is an open-source desktop app for chatting with models and working with AI agents through a graphical interface. It connects to Lovely Router as an OpenAI-compatible provider, so one key gives you Claude, GPT and Gemini models in the same app. You need an API key first.
Set up in one click#
Use Use in tools → AionUI → Open in AionUI on the API keys page to add the provider in one click. AionUI must be installed.
Right after you create a key, the dialog already contains it. For an existing key, paste the full key into the dialog: Lovely Router stores only a hash, so it can't show the key again.
Add the provider by hand#
Add a provider with these settings:
| Setting | Value |
|---|---|
| Provider type | OpenAI-compatible (or "New API") |
| API host | https://lovelyrouter.com |
| API key | your lr-... key |
Add models#
Then add the models you want by id, for example claude-sonnet-5.5, gpt-6.1-sol or gemini-3.1-pro. The model list has every id.
Troubleshooting#
| Symptom | Fix |
|---|---|
401 with Invalid or revoked API key | The key is mistyped, truncated or revoked. Paste it again, or create a new one. |
404 with Model '...' is not available | The model id doesn't exist. Copy an id from GET /v1/models or the model list. |
404 on a path containing /v1/v1/ | The app appends /v1 itself. Use https://lovelyrouter.com as the API host. |
404 with Unknown endpoint | The app is calling an API Lovely Router doesn't serve, such as embeddings. Keep Lovely Router for chat, and pick another provider for that feature. |
402 | Your balance is empty or the key reached its spend limit. See Credits & billing. |
Every other status is covered in Errors.