An EVM-compatible blockchain testnet for Celo, aligned with Sepolia tooling, offering low-cost, fast-finality CELO-S for testing mobile-first payments and smart contracts.
Celo Sepolia Testnet is Celo’s EVM-compatible Sepolia network for deploying and validating smart contracts, dApps, wallets, and cross-chain bridge flows using the CELO-S faucet token. It mirrors mainnet behavior with quick confirmations and very low-cost transactions, ideal for end-to-end testing and performance tuning. Key metrics to compare: avg gas cost effectively ~0 CELO-S (testnet), block speed ~2–5s, practical throughput in the hundreds of TPS, and lower, developer-driven activity than mainnets.
Celo Sepolia Testnet is unique because it aligns with Ethereum’s Sepolia tooling while preserving Celo-native primitives—mobile-first UX, stable-value assets (Mento), and identity/attestation integrations—using CELO-S for gas, enabling feature tests not available on generic Sepolia forks. For bridge teams, its faster blocks (~2–5s) and negligible fees versus Ethereum mainnet (~12s blocks, ~15 TPS, higher fees), plus full EVM parity, simplify cross-chain simulations between Ethereum/Celo Sepolia and other L2 Sepolia networks.
Celo Sepolia Testnet uses CELO-S as the gas token for transaction fees. You can obtain CELO-S by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).
To bridge CELO-S to Celo Sepolia Testnet, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select Celo Sepolia Testnet as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on Celo Sepolia Testnet you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.
To add Celo Sepolia Testnet to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.
To send CELO-S on Celo Sepolia Testnet, ensure your wallet is connected to the Celo Sepolia Testnet network, enter the recipient's address, specify the amount of CELO-S to send, review the gas fee, and confirm the transaction in your wallet.