> ## Documentation Index
> Fetch the complete documentation index at: https://apione.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# APIONE developer documentation

> Find API setup, model usage, pricing, and client integration guides.

Connect your application or compatible client with an APIONE API Key, an API address, and a model ID.

![Compare available models, capabilities, prices, and channels in APIONE.](https://mintcdn.com/apione/pAFvFGkbmcRZirTZ/images/ui/model-catalog.png?fit=max\&auto=format\&n=pAFvFGkbmcRZirTZ\&q=85\&s=b60b5a7f06c1e256c10ccd1d1e19f9f0)

Compare available models, capabilities, prices, and channels in APIONE.

## Start here

> [card] [Build an application](https://apione.ai/docs/en/quickstart.md)
>
> Create a key, list models, and make your first request with cURL.

> [card] [Configure a client](https://apione.ai/docs/en/guides/clients.md)
>
> Choose your tool and enter its API address, key, and model settings.

> [card] [Migrate an application](https://apione.ai/docs/en/guides/migration.md)
>
> Update the Base URL, key, and model, then verify your application.

> [card] [Troubleshoot a request](https://apione.ai/docs/en/support/errors.md)
>
> Check error codes and symptoms, and collect the request ID.

![APIONE web chat home](https://mintcdn.com/apione/pAFvFGkbmcRZirTZ/images/ui/chat-home.png?fit=max\&auto=format\&n=pAFvFGkbmcRZirTZ\&q=85\&s=8ac0861ae12b9bec4349502ad66d95d6)

After signing in, you can open chat, model selection, API Keys, usage, and media generation pages.

## New user first path

| Step | Action | Check after completion |
| - | - | - |
| 1. Sign in | Open the [APIONE console](https://apione.ai/en/app) and sign in | Confirm the current account is correct |
| 2. Prepare balance | Check balance or plans on the account page; recharge or purchase as needed | Payment status, credited amount, and available balance match |
| 3. Web experience | Choose an available model, send a short question, and follow up | Receive a complete response that carries context |
| 4. Connect a tool or code | Create an API Key and list the models available to that key | Address, protocol, and model ID match the guide |
| 5. Check usage | Open usage and request details, and find the request just made | Verify status, tokens, cost, and request time |

Web chat and API usage share APIONE balance. Plan allowances, credited balance, and reward points each have their own rules; see [Usage and costs](https://apione.ai/docs/en/account/usage.md) and [Points and referral rewards](https://apione.ai/docs/en/account/rewards.md).

You can complete the first three steps if you only want to try web chat. When you are ready to code or use a client, go to [Quickstart](https://apione.ai/docs/en/quickstart.md) or [Client guides](https://apione.ai/docs/en/guides/clients.md).

## Three settings you need

| Setting | Where to get it | Purpose |
| - | - | - |
| API Key | [Console API Keys](https://apione.ai/en/app/api-keys) | Authenticates requests and applies the key's model permissions and billing group |
| Base URL | [API addresses and authentication](https://apione.ai/docs/en/api/overview.md) | Tells the SDK or client where to send requests |
| Model ID | [Model directory](https://apione.ai/en/models) or [models API](https://apione.ai/docs/en/models/catalog.md) | Selects a model available to your key |

## Find a guide by task

* **Connect an application**: [Quickstart](https://apione.ai/docs/en/quickstart.md), [Python and Node.js](https://apione.ai/docs/en/guides/sdks.md), [API keys](https://apione.ai/docs/en/getting-started/api-keys.md).
* **Call a model**: [Choose models](https://apione.ai/docs/en/models/catalog.md), [Chat Completions](https://apione.ai/docs/en/models/chat.md), [Responses](https://apione.ai/docs/en/api/responses.md), [Anthropic Messages](https://apione.ai/docs/en/api/anthropic.md), [Gemini](https://apione.ai/docs/en/api/gemini.md).
* **Handle output**: [Streaming](https://apione.ai/docs/en/models/streaming.md), [JSON and tool calls](https://apione.ai/docs/en/models/advanced.md).
* **Review charges**: [Usage, group pricing, and limits](https://apione.ai/docs/en/account/usage.md), [Points and referral rewards](https://apione.ai/docs/en/account/rewards.md).
* **Get help**: [FAQ](https://apione.ai/docs/en/support/faq.md), [Contact support](https://apione.ai/docs/en/support/contact.md).

Supported protocols, parameters, and input/output types vary by model. Check the model details before integration. Current prices and quotas are shown in the console.


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