Sei Labs Unveils Whitepaper for Sei Giga — A Multi-Proposer EVM L1 Built for Speed and Scale
Staff Writer • 2025-05-20
New architecture boasts 5 gigagas throughput, sub-400ms finality, and 200K+ TPS, setting the bar for next-gen EVM chains NEW YORK - In a major leap forward for blockchain infrastructure, Sei Labs has published the whitepaper for Sei Giga, a redesigned Layer 1 chain that promises to deliver the highest throughput ever seen on an EVM-compatible network. The new architecture introduces a multi-proposer consensus model, engineered to meet the demands of performance-intensive decentralized applications. With 5 gigagas throughput, over 200,000 transactions per second, and sub-400 millisecond finality, Sei Giga positions itself as the first EVM Layer 1 built from the ground up for modern web-scale performance — not just another chain layering on speed hacks. Not Just a Faster Chain — A Rethink of the EVM Stack Unlike most EVM chains built on modified versions of geth or reth, Sei Giga features a custom EVM client developed from scratch. This move enables a level of performance tuning impossible with legacy architecture. It’s paired with Autobahn, a novel multi-proposer consensus protocol that allows blocks to be proposed in parallel, effectively breaking the bottlenecks that have long plagued traditional proof-of-stake systems. “Sei Giga is not just another EVM chain — it’s a reimagining of what’s possible for blockchain performance,” said Jay Jog, co-founder of Sei Labs. How It Works: The Technical Playbook Multi-Proposer Architecture: Autobahn allows several block proposals to happen concurrently, achieving a 50x throughput boost. Async State Commitments: By decoupling state commitments from the consensus path, latency drops dramatically. New Execution Layer: Replacing geth entirely, Sei Giga introduces a lean, purpose-built execution engine for Solidity and Vyper. Sub-400ms Finality: Ideal for latency-sensitive applications like DeFi, gaming, and social. For Developers and Institutions: Real-World Use, Not Testnet Talk While most blockchains overpromise and underdeliver, Sei Giga is pitching itself as the real deal for builders frustrated with Ethereum’s scaling limits. With this performance upgrade, Sei Giga aims to make high-frequency trading, social apps, on-chain games, and financial primitives viable directly on-chain — no rollups or workarounds required. The architecture also maintains Proof-of-Stake trust guarantees and offers full EVM compatibility, meaning developers can port Ethereum dApps without rebuilding from scratch. With this whitepaper, Sei Labs officially lays down a new benchmark for what L1s can — and should — deliver. While most of the industry debates modular versus monolithic, Sei is betting on performance, simplicity, and builder experience. And if the benchmarks hold, the days of slow, gas-choked EVM chains might be numbered.
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