Networks
GenLayer operates as two layers: the GenLayer RPC handles intelligent contract operations (gen_* methods), while the GenLayer Chain is the underlying L2 (zkSync Elastic Chain) that handles standard Ethereum operations (eth_* methods). The GenLayer RPC also passes through all eth_* and zks_* calls to the underlying chain, so you can use either endpoint for standard wallet operations.
For the full RPC reference, see GenLayer Node API.
Your wallet connects to the GenLayer RPC — it handles both intelligent contract calls and standard Ethereum methods.
Testnet Bradbury
Production-like testnet with real AI/LLM workloads.
| GenLayer RPC | https://rpc-bradbury.genlayer.com |
| GenLayer Chain RPC | https://zksync-os-testnet-genlayer.zksync.dev |
| Chain ID | 4221 |
| Currency | GEN |
| Explorer | explorer-bradbury.genlayer.com (opens in a new tab) |
| Faucet | testnet-faucet.genlayer.foundation (opens in a new tab) |
Testnet Asimov
Infrastructure and stress testing.
| GenLayer RPC | https://rpc-asimov.genlayer.com |
| GenLayer Chain RPC | https://zksync-os-testnet-genlayer.zksync.dev |
| Chain ID | 4221 |
| Currency | GEN |
| Explorer | explorer-asimov.genlayer.com (opens in a new tab) |
| Faucet | testnet-faucet.genlayer.foundation (opens in a new tab) |
Studionet
Hosted development environment — no local setup required.
| GenLayer RPC | https://studio.genlayer.com/api |
| Chain ID | 61999 |
| Currency | GEN |
| Explorer | explorer-studio.genlayer.com (opens in a new tab) |
Localnet
Local development with full control. Requires GenLayer Studio or GLSim.
| GenLayer RPC | http://localhost:4000/api |
| Chain ID | 61127 |
| Currency | GEN |
| Explorer | Bundled with Studio at http://localhost:8080 |
GenLayer Chain (L2)
The underlying zkSync Elastic Chain that GenLayer runs on. You typically don't need to interact with this directly — the GenLayer RPC passes through all eth_* calls. But if you need direct L2 access (e.g., token transfers, contract debugging at the EVM level), you can add this chain to your wallet.
| RPC | https://zksync-os-testnet-genlayer.zksync.dev |
| Chain ID | 4221 |
| Currency | GEN |
Network Comparison
| Bradbury | Asimov | Studionet | Localnet | |
|---|---|---|---|---|
| Purpose | Production-like testing | Infrastructure testing | Hosted dev | Local dev |
| Setup | None — connect and go | None — connect and go | None — browser only | Docker or GLSim |
| Persistence | Persistent | Persistent | Temporary | Local only |
| LLM execution | Real models | Real models | Real models | Configurable |
| Faucet | Available (opens in a new tab) | Available (opens in a new tab) | Auto-funded | Auto-funded |
Recommended Flow
- Start on Studionet — zero setup, open studio.genlayer.com (opens in a new tab)
- Move to Localnet — when you need full control and fast iteration
- Deploy to Bradbury — when ready for production-like testing with real AI workloads