# Any OpenAI-compatible app

Most AI apps support an OpenAI-compatible provider. Fill in the three fields below and every NezhaGate chat model is yours.

> https://nezhagate.com/en/docs/integrations/openai-compatible

## Fill in these three fields

| Field | What to enter |
| --- | --- |
| **Base URL / API host** | `https://nezhagate.com/v1` |
| **API key** | A key created on the API Keys page of the console (it starts with `sk-`). |
| **Model** | A model ID, such as `gpt-5.5`. The full list is in the [API reference](https://nezhagate.com/en/docs/api), or call `/v1/models`. |

## Which URL exactly?

Apps differ in what they expect. Go by the app's hint and its error message:

- The app asks for a base URL, API base or proxy URL: enter `https://nezhagate.com/v1`

- The app adds /v1 by itself (the error shows /v1/v1/): enter `https://nezhagate.com`

- The app wants the full endpoint (API URL, endpoint): enter `https://nezhagate.com/v1/chat/completions`

## Check the key from a terminal first

If this command returns the model list, the URL and key are fine and the problem is in the app's settings.

```
curl https://nezhagate.com/v1/models -H "Authorization: Bearer YOUR_API_KEY"
```

### Common errors

- **401**: the key is mistyped, has a stray space, or is disabled.

- **404**: wrong URL. Try another of the three forms above.

- **400 model_not_found**: the model name is misspelled, or the model has been retired.

- **402**: not enough balance, or the key has reached its budget.

## Images and video

The image features in chat apps usually wait for a synchronous OpenAI-style answer, while NezhaGate's image and video endpoints are async jobs that return a job id first, so those features usually do not work. For images and video, call the API directly or use the Playground on the website.

## Apps with step-by-step guides

We tested these step by step; just follow along:

- [Cline](https://nezhagate.com/en/docs/integrations/cline): Code in VS Code with DeepSeek, Kimi, GLM, Qwen or Claude.

- [Cherry Studio](https://nezhagate.com/en/docs/integrations/cherry-studio): Desktop AI client: add a provider, pick models, start chatting.

- [SillyTavern](https://nezhagate.com/en/docs/integrations/sillytavern): The role-play chat front end, connected to NezhaGate step by step.

### Claude-only tools

For tools that only speak the Anthropic API, such as Claude Code, see [Claude Code](https://nezhagate.com/en/docs/integrations/claude-code).