Pricing & Limits

Free Plan

Anyone can use Stackup for free without a credit card. On a free plan, you can use:

  • Testnet paymasters
  • 10,000 user operations per month
  • 5 requests per second

This is a great plan for creating a proof of concept or experimenting with account abstraction.

Professional Plan

The professional plan is the best plan for most projects. For $50/month, you get:

  • Mainnet paymasters
  • 200,000 user operations per month included, then $1 per 500 user operations
  • 50 requests per second
  • Team members

User Operations

200,000 user operations are included per month. After you send 200,000 user operations, you will be charged $1 per 500 user operations.


With Stackup's paymaster you can sponsor transactions or allow users to pay for gas in ERC-20 tokens. This is done through the pm_sponsorUserOperation API call.

Fee Sponsorship

Stackup's pay-as-you-go paymaster allows you to pay gas fees directly for users. At the end of each billing period, you will be charged the USD value of gas fees spent at the time the transaction was made plus a 5% surcharge.

ERC-20 tokens

Stackup's ERC-20 token paymaster allows your users to pay for gas using ERC-20 tokens. This service is free for you to use. Stackup adds a 5% surcharge to the conversion rate.

Read the list of supported ERC-20 tokens here.

Enterprise Plans

Many projects need advanced control and reliability at scale. Here are just some of the things we've done for our Enterprise customers:

  • Service Level Agreement (SLA)
  • Paymaster revenue share
  • Custom blockchains
  • Alternative mempools
  • Integration support

Please contact our team at [email protected] to learn more.