
Starknet Grinta upgrade goes live in Sept, bringing faster blocks, sub-second UX, and multi-sequencer decentralization to the Ethereum Layer-2.
Author: Sahil Thakur
Published On: Wed, 27 Aug 2025 04:18:44 GMT
In September, Starknet will activate Grinta (v0.14.0), its most ambitious upgrade to date. The release introduces multi-sequencer architecture, sub-second pre-confirmations, faster blocks, and a new fee market, pushing the Ethereum Layer-2 closer to full decentralization.
According to Starknet team, Grinta isn’t just an upgrade. It’s a turning point in L2 design, bringing Starknet’s infrastructure in line with its decentralization and UX goals, while giving builders a faster, fairer, and more programmable network.
Here’s what v0.14.0 brings to mainnet:
Starknet now runs with three sequencers (StarkWare + partners like Juno), moving away from a centralized operator. It uses Tendermint BFT to agree on blocks, with a roadmap to expand to a permissionless set.
Block finality now depends on Top 100 STRK stakers, requiring â…” weighted signatures: a governance-linked security layer.
For fallback, a temporary “safety lever” lets StarkWare step in if liveness drops too low, overseen by a Security Council.
Starknet introduces pre-confirmations in ~0.5 seconds, decoupling user experience from full finality. Transactions now feel instant, while full consensus continues in the background—huge for DeFi and gaming.
From 30s down to 4–6s, block times get a dramatic boost. Further reductions are planned, including native Cairo execution to scale throughput without sacrificing STARK-proof security.
Starknet ditches FIFO mempools and introduces:
The base fee isn’t burned yet, but that’s coming later this year. For now, the model aims for predictable costs, spam resistance, and validator sustainability (~$1K/month run cost).
Validators and full node operators must upgrade clients immediately (e.g., Pathfinder v0.10.3+, Juno v0.9.1+).
Grinta isn’t just about Ethereum. It aligns with Starknet’s broader roadmap, including:

Starknet’s Grinta upgrade delivers on three fronts: decentralization, usability, and economic design. It’s the first step toward full permissionlessness—and a clear signal that the L2 race isn’t just about TPS anymore.
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