Ethereum Sepolia
Reliable testnet for Ethereum smart contract development
Access Ethereum Sepolia through our unified RPC API with 81 supported methods. Benefit from intelligent routing across multiple providers, real-time node health monitoring, and optimized performance with economy and performance routing strategies. Get started with instant API access and transparent pricing.
This endpoint routes read requests to community-run public RPC nodes across multiple regions. Send transaction requests are routed to premium infrastructure for guaranteed delivery. Ideal for testing and development — no API key required.
Nodes in Sync (Lag Checks)
Daily in-sync status by provider over 30 days for this chain.
Node Correctness (Replay Checks)
Daily replay correctness by provider over 30 days for this chain.
WebSocket Notifications
Real-time subscriptions on Ethereum Sepolia are priced per million notifications, separate from the per-request pricing in the method table below.
All subscription types on this chain share the same per-notification price. Pricing as of October 2026.
Supported Methods(81)
Method | Usage | Providers | Price | Latency (p50) |
|---|---|---|---|---|
eth_getBlockByNumber | Medium | 14 | $3.00/M $6.00/M | - 18ms |
eth_chainId | Medium | 14 | $3.00/M $6.00/M | - 26ms |
eth_call | Medium | 13 | $3.00/M $6.00/M | - 11ms |
eth_blockNumber | Medium | 14 | $3.00/M $6.00/M | - 10ms |
eth_feeHistory | Medium | 12 | $3.00/M $6.00/M | - 13ms |
eth_getLogs | Low | 13 | $3.00/M $6.00/M | - 47ms |
eth_getStorageAt | Low | 13 | $3.00/M $6.00/M | - 7911ms |
eth_getBalance | Low | 13 | $3.00/M $6.00/M | 11ms 10ms |
net_version | Low | 3 | $3.00/M $6.00/M | - - |
eth_getTransactionReceipt | Low | 14 | $3.00/M $6.00/M | 7898ms 174ms |
About Ethereum Sepolia
Ethereum Sepolia is a proof-of-stake testnet for the Ethereum blockchain, launched in October 2021 by Ethereum core developers. It serves as a testing environment for developers to deploy and test smart contracts and decentralized applications before releasing them on the Ethereum mainnet. Sepolia is designed to closely replicate the mainnet's conditions, providing a realistic and risk-free platform for development.
The network operates with a chain ID of 11155111 and utilizes Sepolia Ether (ETH) as its native currency, which has 18 decimal places. Transactions on Sepolia are conducted using test ETH, which holds no real-world value, allowing developers to experiment and troubleshoot without incurring any costs.
Sepolia is maintained by a permissioned validator set controlled by client and testing teams, ensuring a stable and reliable test environment. It is the recommended default testnet for application development, offering a stable and reliable environment for developers to test their applications before deploying them to the Ethereum mainnet.
Developers can interact with Sepolia using testnet Ethereum RPC (Remote Procedure Call) endpoints, similar to how they would on the mainnet. Faucets are available to obtain Sepolia ETH for testing purposes, and block explorers provide transparency and monitoring capabilities for transactions and contract deployments on the network.