Recently, some people mentioned Sei's Giga upgrade. I specifically reviewed the official white paper, Messari report, and the latest updates from Sei Labs to organize the core details and provide an objective perspective.

What is the Sei Giga upgrade?

In simple terms, this is Sei's next-generation leap based on v2 (parallel EVM), aiming to push EVM performance to Web2 levels.

The white paper was released in May 2025, focusing on a new architecture: complete separation of consensus and execution (consensus handles transaction ordering, execution is handled independently), along with a multi-proposer mechanism (Multiple-Concurrent Proposers). Sei will become the first EVM L1 supporting multiple validators proposing blocks simultaneously.

Key performance indicators:

Throughput: target of 5 Gigagas/sec (about 200,000+ TPS), over 50 times higher than current EVM chains.
Finality: maintained under 400ms (even tested at 211ms on devnet).
Execution efficiency: improved 40 times, block production 70 times faster.
Devnet testing: achieved 5.4 Gigagas/sec and 211k TPS, stable operation across globally distributed nodes.
Technical highlights: Autobahn consensus protocol: high-performance BFT mechanism optimized for low latency and high throughput.
Multiple proposers: multiple validators proposing in parallel, solving single-proposer bottlenecks, and introducing new MEV research (Sei Labs has published papers with pre-designed rules to prevent malicious extraction).
MEV resistance design: decoupling ensures that edge cases like storage conflicts do not affect consensus speed.
Seamless compatibility: existing apps require no migration, can upgrade directly; maintains EVM bytecode compatibility (up to Ethereum Fusaka), with almost zero changes needed for developers.
Hardware friendliness: does not increase validator hardware requirements, maintaining decentralization.

Timeline and current status (as of end of December 2025):
Q1-Q3 2025: multiple devnet breakthroughs of the target, SIP-3 wallet upgrade completed on mainnet (paving the way for Giga, shifting towards pure EVM).
Mainnet launch: expected in Q1 2026 (officially "coming soon," with Messari and community expecting Q1 deployment).
Recent optimizations: node storage improved 10-40 times in latency using RocksDB, AI-assisted nodes and other features are also in development.

Currently, Sei's gaming DAAs exceed 800,000, and DEX volume broke 4.6 billion USD in Q3, with real adoption accelerating.

I believe Giga is not just about being faster but redefining EVM's competitiveness in institutional and high-frequency scenarios.

@SeiNetwork #SEI