Airbender brings industry-leading RISC-V proving throughput to ZKsync chains on commodity GPUs. Fewer GPUs, lower proving costs, and an open-source design.
Proving throughput reaches 13 MHz on an RTX 5090 — up to 6× faster than competing systems. This leap in speed lowers costs and shortens settlement times, creating headroom for high-volume applications such as DeFi, payments, and gaming.
Minimal Hardware Footprint. Proves Ethereum blocks in real time with 8 nvidia 5090 GPUs. No GPU farms and no ballooning hardware costs.
Rapid proofs reduce settlement delays, accelerate liquidity movement, and lower counterparty exposure — all while meeting enterprise compliance requirements.
Proof costs as low as $0.0001/transfer unlock sustainable fee models for high-volume or fee-free business lines.
Open-source RISC-V zkVM with modular cryptography and custom kernel support, designed for blockchains, privacy, and new execution models.
Real-time clearing for order books, perps, and AMMs — reducing manipulation risk and improving market integrity.
Faster finality shortens settlement cycles for tokenised securities and FX trades, meeting compliance SLAs.
Synchronize liquidity pools and composable apps in seconds instead of minutes.
Prove machine learning results on affordable GPUs to support compliance-critical AI workflows.
Enable regional or branch-node proving to improve resilience and regulatory alignment.
| Metric |  Airbender | SP1 Turbo | Risc Zero |
|---|---|---|---|
| Base proving speed (H100) | 13 MHz | 3.45 MHz | 1.1 Mhz |
| GPUs per ETH block | 1 | 50-160 | 30-80 |
| ETH block proof time | ~30 s | ~12 s | ~90s |
| License | MIT | Apache-2 | BUSL |
| Hardware modes | CPU • 1 GPU • multi-GPU | 1-GPU+ | 1-GPU+ |
AirbenderIn public beta with reproducible benchmarks. GA release is expected in Q4 2025 following completion of security audits.
Yes. Any RISC-V compiled program can be proven, including EVM bytecode, WASM, and AI workloads.
All new ZKsync chains ship with Airbender. Existing ones (Era, ZKsync Chains) can migrate for immediate speed and cost improvements.
Dev: laptop CPU. Testnet/Mainnet: Any GPU with 22GB RAM including 4090s, 5090s, L4s, or H100s.
Airbender delivers sub-second block proofs and near-real-time Ethereum settlement on commodity GPUs—cutting proving costs to fractions of a cent. Scale securely, reduce infrastructure spend, and unlock new high-volume applications without vendor lock-in.
Documentation 
GitHub 