A head-to-head comparison of Hardhat and Tenderly — pricing, the features that actually differ, and which one fits which use case.
The most widely used Ethereum development environment with a robust plugin ecosystem
Smart contract observability platform for simulation, debugging, monitoring, and alerting in production
These are the 10 capabilities where the two tools genuinely diverge — the rest of their feature sets overlap.
| Capability | Hardhat | Tenderly |
|---|---|---|
| Local Node | Yes | No |
| Mainnet Forking | Yes | — |
| Language | JavaScript / TypeScript | — |
| Test Framework | Mocha + Chai | — |
| Plugin Ecosystem | 90+ plugins | — |
| Debugging | Yes | — |
| Deployment System | Hardhat Ignition | — |
| Open Source | Yes | No |
| Coverage Reporting | Yes | — |
| Gas Reporting | Yes | — |
| Feature | Hardhat | Tenderly |
|---|---|---|
| Local Node | ✓ | ✗ |
| Mainnet Forking | ✓ | — |
| Language | JavaScript / TypeScript | — |
| Test Framework | Mocha + Chai | — |
| Plugin Ecosystem | 90+ plugins | — |
| Debugging | ✓ | — |
| Deployment System | Hardhat Ignition | — |
| Open Source | ✓ | ✗ |
| Coverage Reporting | ✓ | — |
| Gas Reporting | ✓ | — |
| Transaction Debugger | — | ✓ |
| Simulation Api | — | ✓ |
| Production Monitoring | — | ✓ |
| Alert System | — | ✓ |
| Virtual Testnets | — | ✓ |
| Rpc Provider | — | ✓ |
| Multi Chain | — | ✓ |
| Team Collaboration | — | ✓ |
Both tools are free to use — costs come from network or usage fees.
Hardhat
Free
Tenderly
$39/mo
$390/yr billed annually
Tenderly
$99/mo
$990/yr billed annually
Tenderly
Custom
Watch out: JavaScript-based test execution is 5–20x slower than Foundry for large test suites.
Watch out: Free tier limits simulations to 5/month — quickly exhausted in active development.
Hardhat edges ahead on our editorial score (4.7/5), but these tools aren’t straight substitutes. Pick Hardhat when largest plugin ecosystem — 90+ community plugins cover every testing and tooling need matters most to your workflow; pick Tenderly when visual transaction debugger is the most accessible evm debugging tool available is the priority. The deciding factor is usually the trade-off you can least afford — Hardhat means accepting that javascript-based test execution is 5–20x slower than foundry for large test suites, while Tenderly means free tier limits simulations to 5/month — quickly exhausted in active development.
Hardhat carries the higher editorial rating (4.7/5 vs 4.6/5), but they solve different problems. Hardhat is the stronger pick when you need largest plugin ecosystem — 90+ community plugins cover every testing and tooling need. Tenderly wins when visual transaction debugger is the most accessible evm debugging tool available.
Both tools are free to use, with costs coming from network or usage fees rather than subscriptions.
Hardhat's main limitation is that javascript-based test execution is 5–20x slower than foundry for large test suites. For Tenderly, free tier limits simulations to 5/month — quickly exhausted in active development. Weigh these against how you actually plan to use the tool.
In most cases yes — many teams run both, using each where it's strongest. Since Hardhat leads on largest plugin ecosystem — 90+ community plugins cover every testing and tooling need and Tenderly on visual transaction debugger is the most accessible evm debugging tool available, the two are often complementary rather than mutually exclusive.