As blockchain technology continues to evolve, speed and scalability remain its biggest challenges. The team behind the Sei Network believes it has found the next major leap forward – Sei Giga, an upgrade that promises to make blockchain as fast and responsive as the internet itself.
To understand what makes Sei Giga different, CCN spoke to Jayendra Jog, co-founder of Sei Labs, who shared insights into how this new version reimagines blockchain performance from the ground up.
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What Is Sei Giga and Why It Matters for Blockchain Speed
Sei Giga is the next major upgrade of the Sei blockchain, a layer-1 blockchain built to handle huge numbers of transactions extremely quickly while still being compatible with Ethereum’s smart contracts. It’s designed to solve the biggest performance limits of traditional blockchains by rethinking how blocks are created, ordered, and executed.
Traditional blockchains like Ethereum are secure and decentralized, but they struggle with:
- Slow transaction speeds
- Limited throughput
- High fees during peak demand
Sei Giga tackles all of these by redesigning three main parts of a blockchain:
- Consensus: how nodes agree on the next block
- Execution: how transactions are processed
- Storage: how data is kept efficiently
By upgrading these, Sei Giga aims to match Web2-like performance while keeping decentralization and security intact.
“Sei Giga fundamentally reimagines the Sei blockchain as it is today,” said Jog. “With +200k TPS, 400-ms finality, and an MEV-resistant architecture, Sei Giga will mark the next quantum leap in how blocks are built,” Jog noted.
This speed boost, he explained, is made possible by a redesigned consensus mechanism and new layers for execution and storage, all working together to deliver “the speed and capacity to provide Web2-like UX, without sacrificing decentralization.”
In other words, Sei Giga isn’t just a faster version of Sei, it’s a full architectural overhaul aimed at matching the performance of traditional internet applications.
How Does Sei Giga Process So Many Transactions?
Sei Giga’s scalability comes down to two key innovations.
“There are essentially two ways Sei Giga achieves this,” Jog explained. “Multiple validators propose blocks simultaneously, and the computationally burdensome task of transaction execution happens after blocks are ordered.”
This separation between ordering and execution allows Sei to handle vast numbers of transactions in parallel. It’s a bit like a restaurant kitchen that takes orders from many customers at once, then organizes and prepares them efficiently without slowing down service.
Sei Giga’s 400-Millisecond Finality: Already Live and 30x Faster Than Ethereum
When asked whether Sei’s lightning-fast 400ms finality was already available on the main network, Jog confirmed:
“Yes, Sei finality today is 400ms, approximately +30x faster than Ethereum finality. The breakthrough of Sei Giga will be achieving 5 gigagas throughput without sacrificing the speed needed to provide the performance for Web2-like apps.”
That means transactions confirm almost instantly, a massive advantage for financial apps, games, and trading platforms where every millisecond matters.
No Extra Hardware Needed: How Sei Giga Stays Accessible for Validators
Speed often comes at the cost of complexity, but Sei Giga avoids this trade-off.
“The Giga upgrade has been designed to dramatically increase chain performance without increasing hardware requirements for validators,” Jog said.
“Giga will introduce new node types, but will allow existing validators to continue with the same hardware used for the current network.” This ensures the system remains accessible and decentralized, even as it scales up.
How Sei Giga Smoothly Handles Busy Smart Contracts and Heavy Usage
One common issue on blockchains is what happens when multiple users interact with the same smart contract at once. Jog explained how Sei Giga addresses this:
“Transactions requiring access to the same storage slots is an edge case that affects every EVM chain, causing slight performance degradation when it occurs,” he said.
“Because the Giga upgrade decouples consensus and execution, Sei’s consensus will be unaffected by this edge case, unlike other EVM chains.”
Sei Labs is also developing solutions like access lists and native compilation of hot contracts, which could further improve performance, not just for Sei, but for the broader Ethereum ecosystem.
Seamless Upgrade: What Happens to Current Sei Apps After the Giga Launch
For developers, Sei Giga is designed to be backward compatible.
“Apps that are live on Sei won’t need to migrate to Sei Giga once it’s on mainnet,” Jog explained. “The network will upgrade seamlessly while retaining compatibility with apps on the network. Blue chip launch partners will be announced as we get closer to the full launch.”
That means developers and users alike can expect a smooth transition without needing to rewrite or re-deploy their apps.
Ethereum Developers Can Join Easily
“Sei is bytecode compatible with Ethereum’s EVM up to the recent Fusaka upgrade, excluding EIP-4844 as Sei doesn’t use blobs for storing transaction data,” Jog said.
“Bytecode compatibility is important because it means developers don’t need to recompile or re-audit their code. With only a few small changes to account for gas limits and gas token references, developers can copy, paste, and deploy.”
This makes Sei Giga an inviting option for Ethereum developers looking for higher performance without giving up EVM familiarity.
Developer Tools, Testnets and the $5M Sei Global Mobile Innovation Program
Jog also revealed that Sei Labs will be launching a $5 million Global Mobile Innovation Program to encourage development across mobile and consumer devices.
“We work closely with developers to provide them with all the documentation, tooling, and devnet/testnet needed to deploy on Sei for the first time,” he added.
This kind of early ecosystem support is designed to help developers build and test applications that take full advantage of Sei Giga’s speed and scalability.
How Sei Giga Maintains Decentralization While Scaling Performance
As networks grow, maintaining decentralization becomes harder. Jog explained that Sei Giga’s new design keeps this balance intact:
“Sei Giga improves the algorithm used for block proposing and also introduces new node types, ensuring validator nodes only need to maintain a limited history of the chain’s state,” he said.
“While hardware requirements for validators are unlikely to change, overall Sei Giga will be as decentralized as it is today.”
What Users Can Expect
For everyday users, Sei Giga promises a lightning-fast, MEV-resistant chain with the capacity and stability needed for real-world applications.
According to Jog, the end result is a network capable of delivering the kind of seamless, near-instant user experience people are used to from traditional apps and websites.
Sei Labs’ Long-Term Vision: Building the Infrastructure for the Internet of Money
Sei’s ambitions extend beyond gaming or DeFi.
“We’ve designed Sei to support applications across Web3 use cases,” Jog said, “and you’ll see applications deployed across DeFi, gaming, AI, and everywhere blockchain technology improves our lives online.”
He summarized Sei Labs’ long-term goal clearly:
“Sei was purpose-built to be the infrastructure for the internet of money. Internet native financial institutions need internet native financial infrastructure. With Sei Giga we want to build the first next-generation blockchain: a blockchain that meets Wall Street’s need for high throughput and fast finality, on the blockchain.”
The information provided in this article is for informational purposes only. It is not intended to be, nor should it be construed as, financial advice. We do not make any warranties regarding the completeness, reliability, or accuracy of this information. All investments involve risk, and past performance does not guarantee future results. We recommend consulting a financial advisor before making any investment decisions.
Dr. Guneet Kaur is a senior editor at CCN.com and a Science Fellow at Exponential Science. She is a fintech and blockchain expert with extensive experience in digital finance education, blockchain ecosystems, and cryptocurrency markets. She has worked with global media such as Cointelegraph, as well as education and blockchain platforms, to design and lead strategic content and learning initiatives. As an educator and assessor for top-tier executive programs, she bridges real-world fintech trends with academic insight.
Dr. Kaur is also a published researcher and peer reviewer across fintech and data science journals, including Financial Innovation Journal and International Journal of Big Data Intelligence and Applications. Her work spans data-driven analysis, Web3 innovation, and technical content development. With a strong foundation in both industry and academia, she translates complex financial technologies into practical applications, empowering learners, professionals, and institutions across the rapidly evolving digital finance landscape.
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