The upgrade was activated at the start of epoch 1,035, raising Solana’s maximum transaction size from 1,232 bytes to 4,096 bytes on mainnet.

Solana activated an upgrade on mainnet at the start of epoch 1,035, raising its maximum transaction size to 4,096 bytes.

How the limit changed

The upgrade increased Solana’s maximum transaction size from 1,232 bytes to 4,096 bytes. The network now has a 4,096-byte transaction-size limit.

Related timing change

Separately, Solana’s slot time was reduced to 350 milliseconds in August.