Viem vs Ethers.js
A detailed head-to-head comparison of Viem and Ethers.js — pricing, features, and which one wins for different use cases.
Viem
Modern, type-safe TypeScript interface for Ethereum
Viem is a modern, lightweight, TypeScript-first library for interacting with Ethereum — a low-level interface for reading blockchain data, sending transactions, interacting with contracts, and more — …
Full review →Ethers.js
The long-dominant, complete JavaScript library for Ethereum
Ethers.js is one of the most widely-used JavaScript/TypeScript libraries for interacting with Ethereum, long the dominant choice for reading blockchain data, managing wallets, signing, and interacting…
Full review →Feature Comparison
| Feature | Viem | Ethers.js |
|---|---|---|
| Local Node | ✗ | ✗ |
| Mainnet Forking | ✗ | ✗ |
| Language | TypeScript | JavaScript / TypeScript |
| Test Framework | ✗ | ✗ |
| Plugin Ecosystem | ✓ | ✓ |
| Debugging | ✗ | ✗ |
| Deployment System | ✗ | ✗ |
| Open Source | ✓ | ✓ |
| Coverage Reporting | ✗ | ✗ |
| Gas Reporting | ✗ | ✗ |
Viem Pricing
Viem
Free (Open Source)
Free
- ✓Type-safe Ethereum interface
- ✓Reads, writes, contract interaction
- ✓Foundation for Wagmi
- ✓Small, fast, modular
- ✓Full ABI type inference
Ethers.js Pricing
Ethers.js
Free (Open Source)
Free
- ✓Complete Ethereum JS library
- ✓Providers, signers, contracts
- ✓ABI encoding + utilities
- ✓ENS support
- ✓Mature and well-documented
Verdict: Which Should You Choose?
Viem is the better pick if you need modern, type-safe alternative to ethers/web3.js. Ethers.js wins when long-dominant, battle-tested library. Both are production-ready — the right choice depends on your team's workflow and budget.