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

# BYOK vs Built-in Provider

<Tabs>
  <Tab title="Default mode">
    Connect a **model provider** via BYOK.

    * **Options:** OpenAI, Together AI (OpenAI‑compatible), OpenRouter (unified OpenAI‑style API), or any OpenAI‑compatible endpoint.

    * **Billing:** You pay your provider; Paywalls bills your **end users** against their app‑scoped balance.

    * Paywalls cannot charge a third‑party provider directly from the app‑scoped virtual wallet.

    * Built-in provider is coming soon for Default mode.
  </Tab>

  <Tab title="Shared mode">
    * **Optional:** Use the **built‑in provider (powered by OpenRouter)** to run any supported model with **no setup**. Users pay from their **shared wallet**; Paywalls automatically splits the charge between **developer revenue** and **provider cost** to preserve your configured margin.

    * **Alternative:** BYOK is also supported. If you need your own models, connect providers you already use (OpenAI, Together, OpenRouter, or any OpenAI‑compatible endpoint). You pay your provider; Paywalls bills your users.
  </Tab>
</Tabs>