What is a Compute Unit (CU)?
A Compute Unit is a measure of computational load assigned to each RPC request. Each method has a CU Weight that is deducted from your total available CUs. Archive requests (queries to historical data) often have a higher Archive CU Weight.Plan Tiers
Standard RPC Method Costs
Extended RPC Method Costs
Moralis provides extended RPC methods that offer advanced data retrieval. These are more computationally intensive and have higher CU weights.Archive Nodes
Archive nodes store historical blockchain data beyond the most recent blocks. Because of the additional computational and storage resources required, querying archive nodes comes with a higher CU cost. If your use case involves accessing deep historical data, be mindful of the increased cost shown in the Archive CU Weight column above.Optimizing CU Usage
- Limit block range — The default block range for queries is 100 blocks. Requesting larger ranges or querying archive data increases CU consumption.
- Monitor usage — Track your CU usage in the Moralis Dashboard to avoid hitting rate limits.
- Use batch requests — Combine multiple requests into a single API call. Note that batching does not reduce total CU cost, but it reduces HTTP overhead. Maximum batch size is 20 requests per call. See Batch Requests for details.