> For the complete documentation index, see [llms.txt](https://docs.unisat.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.unisat.io/developer-support/plans.md).

# Plans

UniSat UniSat AI Kit can still be accessed without an API key. However, to ensure fair allocation of resources, we recommend including an API key in all requests. Requests made without a key, or with a free key, may face strict rate limits or even no response under high load. 

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Each pricing model offers the following plans: Free, Specialist, Enterprise, Custom, and Pay-as-you-go. Visit <https://developer.unisat.io/> and follow the on-page instructions to apply.

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* **Free**: Ideal for conducting research and high-load testing. Obtain a one-time key for your short-term project.&#x20;

&#x20;      ✔Rate Limit: 30,000 calls/month

&#x20;      ✔Rate Limit: 5 calls/second

<figure><img src="/files/nFXEJCBF2nV3eXzUNEvG" alt="" width="364"><figcaption></figcaption></figure>

* **Specialist**: Suitable for developers running larger scripts and blockchain startups with a growing user base.

<figure><img src="/files/1uSRgjCd9xqj6qEkdkcQ" alt="" width="357"><figcaption></figcaption></figure>

* **Enterprise**: Perfect for wallets, exchanges, and startups in their growth phase.

<figure><img src="/files/Ut9n9lbgw0eUjARywQ0H" alt="" width="351"><figcaption></figcaption></figure>

* **Pay as you go**: Suitable for temporary high-demand needs with flexible usage.

<figure><img src="/files/nllP0T1SZXZ6LHKqzdjP" alt="" width="360"><figcaption></figcaption></figure>

**Custom**: To inquire about a custom API plan, please feel free to contact us at <contact@unisat.io>.

<figure><img src="/files/vOQbxSaR4yprXLjkcupO" alt="" width="563"><figcaption></figcaption></figure>

If your API exceed the current usage limit, you can upgrade your API quota, you can upgrade your API quota by clicking "Upgrade Plan" on the right side of your dashboard:<https://developer.unisat.io/dashboard/>.&#x20;