Sui resumed block production after a six-hour network-wide outage, renewing concerns about reliability as competition among layer 1 blockchains heats up.
Posted January 15, 2026 at 6:16 am EST.
The Sui blockchain came back online Wednesday afternoon after suffering a nearly six-hour outage that halted block production across the entire network. It was the second major disruption since Sui launched in 2023.
At around 10:30 a.m. ET, the Sui team confirmed the issue on X, calling it a “network stall.” Validators were unable to produce new blocks, freezing transaction processing chain-wide. The network’s status page later reported that a fix had been deployed and, by 4:30 p.m. ET, Sui had been fully restored. A full incident report is expected in the coming days.
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Despite the severity of the outage, SUI’s token price held firm, trading around $1.85 with minimal volatility. The network currently holds just over $1 billion in total assets, according to DeFi Llama.
This marks the second time Sui has experienced a major failure, following a similar crash-loop incident in November 2024. Launched by Mysten Labs and pitched as a high-performance “Solana killer,” Sui touts low fees and parallel transaction processing as key advantages.
But Wednesday’s outage raises new questions about its technical resilience, especially as competition among layer 1 networks intensifies. For now, Sui is back, but its reliability will be under fresh scrutiny.
