Helius Credits - Helius Docs

What are credits?

Credits are a unit of account that we use to bill usage for RPCs, API requests, and data streaming products like LaserStream gRPC and LaserStream WebSocket. Every plan has a base number of credits, and every API call has an assigned credit cost. Below, we outline the credits per plan, credit costs by API, and credits for streaming data.

Monthly Allocation

Credits reset monthly

Credit Priority

Credits are consumed in this order: monthly, prepaid, autoscaling

Flexible Billing

Pay for additional credits when needed

Base Credits by Plan

Here is a breakdown of the total number of credits that are included by default in each plan. If you need more credits, upgrade your plan, enable autoscaling, purchase prepaid credits, or contact sales to discuss enterprise options. For more information, read our plans and pricing guide.

Standard Credits

Historical Data Credits

Historical data queries, sometimes called archival calls, cost 1 credit each. Exceptions are getTransactionsForAddress, which starts at 10 credits and is metered by returned results, and getTransfersByAddress, which costs 10 credits.

Plan Requirement: getTransfersByAddress is only available on Developer plans and above. Free plan users will receive an error when attempting to use this endpoint.

getTransactionsForAddress

getTransactionsForAddress metering scales with what a successful response returns:

Examples:

Data Streaming Credits

Unlike regular credits that assign credits per call, data streaming products like LaserStream gRPC and LaserStream WebSocket assign credits per amount of data consumed.

Preconfirmations

Preconfirmations stream scheduled transactions over a WebSocket at the lowest possible latency. Available on Professional plans and higher. Metered at 10 credits per message (one message per streamed transaction). Preconfirmations is a new product and pricing is subject to change.

LaserStream WebSocket

LaserStream WebSocket serves the standard Solana subscription methods alongside the Helius-specific extensions (transactionSubscribe, enhanced accountSubscribe) on the unified wss://mainnet.helius-rpc.com endpoint. Standard methods are available on all plans; the Helius extensions require a Developer, Business, or Professional plan. All WebSocket usage is metered at 2 credits per 0.1 MB of uncompressed streamed data.

LaserStream gRPC

LaserStream gRPC Mainnet is available on Business and Professional plans. LaserStream gRPC Devnet is available on all plans. All users pay 2 credits per 0.1 MB of uncompressed streamed data.

Preprocessed Transactions

Preprocessed transactions (decoded shreds, ~8 ms ahead of processed) are delivered over the preprocessedSubscribe WebSocket, available on all paid plans and metered at 0.1 credits per message (one message per delivered transaction).

Shred Delivery — Raw Shreds

Raw Shreds (UDP) is our premier, low-latency shred delivery service. You can access raw shreds from your Helius Dashboard. Simply add a seat and enter your IP address to start receiving shreds. Raw shreds do not consume credits. Raw shreds are available to all customers. Each seat is $1,000/month and binds to one IP. If you are on a Professional plan, each seat costs $800/month/IP.

Data Add-ons

If you’re on a Professional plan, you may purchase Data Add-ons between 5TB-100TB per month to be used for both LaserStream gRPC and LaserStream WebSocket. Overages will be billed at 2 credits per 0.1 MB of uncompressed streamed data.

Data Size

Billing for data streaming products is based on uncompressed message size. Typical sizes include:

• Block (~4MB)
• Account (~0.0004MB)
• Transaction (~0.0006MB)

These are rough estimates only. Actual data usage depends on your specific use case, including account size, transaction type, which programs you’re listening to, and transaction metadata size. You should estimate usage based on your own traffic. Treat the values above as directional estimates, not guarantees.

Transaction Submission Credits

Helius offers two primary transaction submission methods: Sender, our specialized transaction landing service for traders and low-latency applications; and Staked Connections (default) for fast, reliable landing rates.

Staked Transactions Are Now Default for All Paid Plans: All transactions via mainnet.helius-rpc.com automatically use staked connections for highest success rates.

DAS API Credits

All DAS API requests cost 10 credits each:

Asset Information

• getAsset
• getAssetProof
• getAssetProofBatch
• getNftEditions

Asset Discovery

• getAssetsByOwner
• getAssetsByAuthority
• getAssetsByCreator
• getAssetsByGroup
• searchAssets
• getAssetBatch

Transaction History

• getSignaturesForAsset

Account Information

• getTokenAccounts

Wallet API Credits

All Wallet API requests cost 100 credits each:

For more information on using the Wallet API, read our Wallet API documentation.

Wallet-as-a-Service Credits

Wallet-as-a-Service bills through your existing Helius credits — there is no separate subscription and no per-monthly-active-user fee. Each signature costs 200 credits ($0.001 at the standard credit rate), which covers the embedded wallet and signing.

Plan Requirement: Wallet-as-a-Service is available on paid plans only (Developer and above). WaaS is currently in beta and pricing is subject to change.

Track wallets, signatures, and credits spent on the dashboard in WaaS → Analytics.

Webhook Credits

For more information on using webhooks, read our quickstart guide.

ZK Compression Credits

All ZK Compression API calls cost 10 credits each. One exception is getValidityProof, which costs 100 credits per request because it is computationally intensive.