Helius

Helius is a Solana-native RPC provider with a credit-based pricing model. sendTransaction is free, which makes it an efficient choice for write-heavy workloads.

Endpoint URL format

https://mainnet.helius-rpc.com/?api-key=<YOUR_API_KEY>

Setup

1. Create an account at helius.dev.
2. Copy your API key from the dashboard.
3. Add to your config:

[[providers]]
name = "helius"
url  = "https://mainnet.helius-rpc.com/?api-key=${HELIUS_API_KEY}"

export HELIUS_API_KEY=your_api_key_here
rpc-plane run

Pricing model

Helius uses a credit model. Each JSON-RPC method consumes a fixed number of credits per call.

Plan	Monthly credits	Price
Developer	10,000,000	$49/mo
Business	100,000,000	$249/mo
Professional	500,000,000	$999/mo

Common method costs:

Method	Credits
getAccountInfo	1
getTransaction	5
sendTransaction	0 (free)

Check helius.dev/pricing for the full method table and current rates.

Tips

• sendTransaction is free — Helius is ideal as primary or secondary for transaction landing.
• The Developer plan is sufficient for testing and moderate traffic.
• Use failover_ordered with Helius as primary if you want deterministic cost control.