Solana mainnet’s per-block compute limit will be raised by 66%, with SIMD-0286 set to activate within 24 hours.

Solana’s mainnet is set to raise its per-block compute capacity by 66% in less than 24 hours, lifting the cap from 60 million compute units (CUs) to 100 million. The change is part of SIMD-0286, a Solana Improvement Proposal that will automatically activate at the start of Epoch 1009. Proposed by Jito Labs, SIMD-0286’s core adjustment is increasing the per-block maximum CUs to 100 million while keeping other limits unchanged. The upgrade aims to free up more space for non-voting transactions, enabling ~400ms blocks to handle more complex trades, thereby boosting throughput, reducing congestion failure rates, and easing fee pressure. This marks another scaling expansion following SIMD-0256, which previously raised the cap from roughly 50 million to 60 million CUs.