Foundry vs thirdweb SDK
A detailed head-to-head comparison of Foundry and thirdweb SDK — pricing, features, and which one wins for different use cases.
Foundry
Blazing-fast Rust-based Solidity testing framework with built-in fuzzing and invariant testing
Foundry is a Rust-based Ethereum development toolkit built by Paradigm that has become the preferred framework for security-conscious and performance-focused Solidity teams. Its defining advantage ove…
Full review →thirdweb SDK
Full-stack SDKs and tools for building Web3 apps fast
thirdweb provides full-stack Web3 development SDKs and infrastructure that let developers build blockchain apps rapidly, with pre-built audited smart contracts, SDKs across many languages (TypeScript,…
Full review →Feature Comparison
| Feature | Foundry | thirdweb SDK |
|---|---|---|
| Local Node | ✓ | ✗ |
| Mainnet Forking | ✓ | ✗ |
| Language | Solidity (tests) | TypeScript / React / Unity / Python |
| Test Framework | forge-std | ✗ |
| Plugin Ecosystem | Growing (smaller than Hardhat) | ✓ |
| Debugging | ✓ | ✗ |
| Deployment System | Forge scripts | ✓ |
| Open Source | ✓ | ✓ |
| Fuzz Testing | ✓ | — |
| Invariant Testing | ✓ | — |
| Coverage Reporting | — | ✗ |
| Gas Reporting | — | ✗ |
Foundry Pricing
Foundry
Free (Open Source)
Free
- ✓forge, cast, anvil, chisel
- ✓Solidity tests
- ✓Built-in fuzzer
- ✓Invariant testing
- ✓Mainnet forking
- ✓Forge Standard Library
thirdweb SDK Pricing
thirdweb SDK
Free
Free
- ✓Full-stack Web3 SDKs
- ✓Pre-built audited contracts
- ✓Wallet + auth infra
- ✓Multi-language + Unity
thirdweb SDK
Pro
$99/mo
$990/yr billed annually
- ✓Higher usage limits
- ✓Account abstraction
- ✓Gasless transactions
- ✓Production support
Verdict: Which Should You Choose?
Foundry is the better pick if you need 5–20x faster test execution than hardhat — critical for large suites and audit pipelines. thirdweb SDK wins when full-stack sdks across many languages. Both are production-ready — the right choice depends on your team's workflow and budget.