Solana activates larger transactions on mainnet

Solana activated its larger transaction format on mainnet at epoch 1035, raising the maximum transaction size from 1,232 bytes to 4,096 bytes. The change uses the version-one format defined through the network's improvement proposals and leaves legacy and version-zero transactions available.

The additional space can accommodate larger cryptographic proofs, more signatures and more complex bundles of instructions. Applications must explicitly support the new format when sending transactions, while services that read or index them need to accept transaction version one.

Version-one transactions also express resource limits through their transaction configuration rather than the existing Compute Budget instructions. Developers must supply the required limits instead of assuming previous defaults. The activation expands what a single transaction can contain; it does not, by itself, demonstrate an increase in the network's overall transaction throughput.