Algorand 5.0 raises maximum application size to 16 KB and app argument capacity from 2 KB to 16 KB
Covered by 2 sources
The Algorand 5.0 protocol upgrade, announced in a four-part blog series beginning 20 August 2026, increases several protocol limits for applications and logic signatures. The maximum size for applications doubles to 16 KB, application argument capacity rises from 2 KB to 16 KB, and a LogicSig that previously required 16 grouped transactions now fits within a single transaction. Transaction costs remain unchanged.
The upgrade is introduced through a series titled Enhancing on-chain flavor in Algorand 5.0, with parts named Salt, Fatter apps and transactions, Acid, and Heat. The second part details the expanded app and transaction capabilities described above, while the third and fourth parts describe Acid and Heat respectively, each presented as a set of new capabilities aimed at developer tools and on-chain functionality. The blog does not provide further technical detail beyond what the developer-focused post on X enumerates.
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