The 1inch Balance API provides real-time, accurate information about token balances and allowances across multiple chains. This API is essential for applications that need to track or display the assets held in web3 wallets and offers a simple integration into wallets, exchanges, and other dApps. By leveraging the Balance API, you can ensure that your users always have up-to-date details on their token holdings, allowances, and more.

## Supported Chains

The 1inch Balance API supports a broad range of chains:

| Supported Chains | Chain ID |
| :--------------- | :------- |
| Ethereum         | 1        |
| Solana           | 501      |
| Base             | 8453     |
| Binance          | 56       |
| zkSync           | 324      |
| Gnosis           | 100      |
| Optimism         | 10       |
| Polygon          | 137      |
| Linea            | 59144    |
| Sonic            | 146      |
| Unichain         | 130      |
| Arbitrum         | 42161    |
| Avalanche        | 43114    |

## Why use the 1inch Balance API?

The 1inch Balance API offers several significant benefits:

- **Wide selection of tokens**: supports any token on the most popular blockchain networks.

- **Fast response time**: with response times under 400 ms, the Balance API is among the fastest on the market, providing nearly instant access to wallet balances and allowances.

## Integration possibilities

The 1inch Balance API can be integrated into a variety of applications, making it versatile for many web3 use cases. It is especially useful in:

- Wallets
- Portfolio and token trackers
- Exchanges and meta-aggregators
- Majority of web3 applications

:::info
For workloads that require higher RPS, expanded quotas, or sustained performance, explore the available paid plans on the [**pricing page**](/pricing).
For organizations with significant trading volumes or advanced requirements, [**complete this application**](/get-enterprise) to explore tailored Enterprise options.

:::

## API reference

For detailed information about each endpoint, refer to the Balance API [OpenAPI section](./methods).