Quick Start
Choose Your Plan
Compare plans and find the right fit for your needs
Understand Credits
Learn how our credit-based billing system works
Rate Limits Guide
Understand request limits and exceptions
Enterprise Solutions
Custom solutions for high-volume applications
Pricing Plans
| Feature | Free | Developer | Business | Professional |
|---|---|---|---|---|
| Pricing | $0/month | $49/month | $499/month | $999/month |
| Monthly Credits | 1M | 10M | 100M | 200M |
| RPC Rate Limit | 10 req/s | 50 req/s | 200 req/s | 500 req/s |
| DAS & Enhanced APIs | 2 req/s | 10 req/s | 50 req/s | 100 req/s |
| WebSockets | Standard | Standard | Standard + Enhanced | Standard + Enhanced |
| gRPC Access | — | LaserStream (Devnet) | LaserStream (Devnet) | LaserStream (Devnet + Mainnet) |
| Support Level | Community | Chat | Priority Chat | Slack/Telegram |
If you’re on a legacy plan, see the Legacy Plan Details section below.
Get Started Today
Sign up for free and start building with 1M credits per month. Upgrade anytime as you scale.
Need Enterprise Solutions?
Contact our sales team for custom pricing, dedicated support, and enterprise features.
Data Add-Ons
Transform your Professional plan’s pay-per-use model into predictable costs with included monthly data allowances. Available for Professional plans only and covers both LaserStream gRPC and Enhanced WebSockets data usage.- 5 TB
- 10 TB
- 25 TB
- 50 TB
- 100 TB
$500/monthIncluded: 5 TB monthly data allowance
Overage Rate: 3 credits per 0.1 MB
Overage Rate: 3 credits per 0.1 MB
Data Add-Ons: Available exclusively for Professional plans. Provides fixed monthly cost with included data allowance (5TB-100TB). Applies to both LaserStream and Enhanced WebSockets usage.
Need more than 100 TB? Contact our sales team for enterprise solutions with custom data allowances.
Enterprise Plan
Custom Solutions for High-Volume Applications
Enterprise plans provide tailored solutions for organizations with specific requirements.Key Benefits:
- Custom rate limits tailored to your needs
- Volume discounts for high credit usage
- SLA guarantees with uptime commitments
- Direct engineering support access
- Advanced usage analytics and monitoring
- Priority support channels
Rate Limits
Rate limits control how many requests you can make per second. When exceeded, you’ll receive an HTTP 429 response.
Standard Rate Limits
Your plan determines your base rate limits:| Plan | RPC Rate Limit | DAS & Enhanced APIs |
|---|---|---|
| Free | 10 requests/s | 2 requests/s |
| Developer | 50 requests/s | 10 requests/s |
| Business | 200 requests/s | 50 requests/s |
| Professional | 500 requests/s | 100 requests/s |
| Enterprise | Custom | Custom |
Need higher RPC rate limits? Teams on Professional Plans can purchase an extra 100 RPS for $100/month. If you need custom rate limits ahead of launches, contact our sales team.
Special Limits
Some endpoints have special restrictions due to their computational requirements:- Transactions
- High Complexity Calls
- LaserStream
- Webhooks
- WebSockets
- ZK Compression
| Endpoint | Free | Developer | Business | Professional |
|---|---|---|---|---|
Sender | 15/sec | 15/sec | 15/sec | 15/sec |
sendTransaction | 1/sec | 5/sec | 50/sec | 100/sec |
simulateBundle | 10/sec | 50/sec | 200/sec | 500/sec |
Need higher limits for sending transactions? If you are on a Professional plan and need to increase your sendTransaction rate limits, contact our sales team. Professional plan users can also request significant rate limit upgrades for Sender to support high-throughput trading applications.
Credit System
Monthly Allocation
Your plan includes credits that reset monthly
Credits are consumed in this order:
Monthly → Prepaid → Autoscaling
Flexible Billing
Pay for additional credits only when needed
Standard Credit Costs
| Service | Credits | Notes |
|---|---|---|
| Standard RPC Calls | 1 | All RPC calls except those listed separately |
| simulateBundle | 1 | Simulate Jito Bundles |
| Priority Fee API | 1 | Estimate priority fees |
| Webhook Events | 1 | Per event sent by Helius, regardless of successful or failed endpoint responses |
| LaserStream gRPC | 3 | Per 0.1 MB of streamed data (uncompressed) |
| Enhanced WebSockets | 3 | Per 0.1 MB of streamed data (uncompressed). For users who upgrade to Business or Professional plans after October 16, 2025 |
| Data Add-on (Professional only) | 3 | Per 0.1 MB after included allowance (5-100TB). Applies to LaserStream and Enhanced WebSockets usage. See Data Add-ons for pricing tiers |
| getProgramAccounts | 10 | Get all accounts/data owned by a program |
| Historical Data (Archival) | 10 | RPC calls that query historical blockchain data including getTransaction, getSignaturesForAddress, getBlock.For the complete list, see the table below |
| getTransactionsForAddress | 100 | Enhanced transaction history with advanced filtering and sorting. Requires Developer plan or higher |
| ZK Compression API | 10 | ZK Compression RPC calls |
| DAS API | 10 | All DAS endpoints |
| Enhanced Transactions | 100 | Enhanced transaction parsing |
| Webhook Management | 100 | Create, edit, delete webhooks |
| getValidityProofs | 100 | Compute ZK proofs |
Data Streaming Billing Guide:
- Enhanced WebSockets: Available on Business and Professional plans. Users who upgrade after October 16, 2025 pay 3 credits per 0.1 MB. Users on these plans before this date remain unmetered.
- LaserStream: Available on Professional plans only. All users pay 3 credits per 0.1 MB usage.
- Data Add-on: Available for Professional plans. See Data Add-ons for pricing tiers (5TB-100TB) with included data allowance. Overages billed at 3 credits per 0.1 MB. Applies to both LaserStream and Enhanced WebSockets.
- Data Size: Billing based on uncompressed message size. Typical sizes: Block (~4MB), Account (~0.0004MB), Transaction (~0.0006MB).
Sender and Staked Connections
| Method | Credits | Description |
|---|---|---|
| Sender | 0 | Ultra-low latency submission |
| Staked Connections | 1 | Highest reliability (default) |
Staked Transactions Are Now Default for All Paid Plans: All transactions via
mainnet.helius-rpc.com automatically use staked connections for highest success rates.Historical API
Historical data queries (sometimes called archival calls) cost 10 credits each:| Method | Credits | Description |
|---|---|---|
getBlock | 10 | Retrieve block data and transactions for a specified slot |
getBlocks | 10 | Get list of blocks between two slots |
getBlocksWithLimit | 10 | Get blocks starting at a given slot with limit |
getSignaturesForAddress | 10 | Get transaction signatures for an address |
getTransaction | 10 | Retrieve transaction details for a specified signature |
getBlockTime | 10 | Get estimated production time of a block |
getSignatureStatuses | 10 / 1 | Get statuses for transaction signatures. Cost depends on searchTransactionHistory parameter: 10 credits when enabled (searches historical data), 1 credit when disabled (searches recent blocks only) |
getInflationReward | 10 | Get inflation reward for a list of addresses for an epoch |
getTransactionsForAddress | 100 | Enhanced transaction history with advanced filtering, sorting, and full transaction data. Requires Developer plan or higher |
Plan Requirement:
getTransactionsForAddress is only available on Developer plans and above. Free plan users will receive an error when attempting to use this endpoint.Batch Request Limits
When making batch requests for historical data methods, the following limits apply:| Method | Max Batch Size |
|---|---|
getTransaction | 100 items per request |
| All other historical methods | 10 items per request |
getTransactionsForAddress | No batch requests allowed |
Exceeding batch limits will result in an error response. For
getTransactionsForAddress, each address must be queried in a separate request.DAS API
All DAS API calls cost 10 credits each:Asset Information
getAssetgetAssetProofgetAssetProofBatchgetNftEditions
Asset Discovery
getAssetsByOwnergetAssetsByAuthoritygetAssetsByCreatorgetAssetsByGroupsearchAssetsgetAssetBatch
Transaction History
getSignaturesForAsset
Account Information
getTokenAccounts
Managing Your Usage
Configure Autoscaling
Automatically add credits as needed for handling traffic spikes and ensuring uninterrupted service.
Helius Dashboard
Monitor real-time usage, set alerts, and track consumption patterns with detailed analytics.
Legacy Plans
The limits below apply to deprecated V3 plans. These plans are no longer available for new users.
Legacy V3 Plan Details
Legacy V3 Plan Details
| Free V3 | Developer V3 | Business V3 | Performance V3 |
|---|---|---|---|
| 1M Credits | 10M Credits | 200M Credits | 500M Credits |
| 10 RPC requests/s | 50 RPC requests/s | 150 RPC requests/s | 500 RPC requests/s |
| 2 API requests/s | 10 API requests/s | 50 API requests/s | 100 API requests/s |
| 1 API Key | 10 API Keys | 15 API Keys | 20 API Keys |
| 1 Webhook | 3 Webhooks | 10 Webhooks | 20 Webhooks |
| Community support | Chat Support | Priority Chat Support | Slack/Telegram Support |
| — | LaserStream (Devnet) | LaserStream (Devnet) | LaserStream (Devnet) |