As blockchains push for scalability, developer activity has become one of the clearest signs of which L1s might stick around. But you can’t just look at one metric. Instead, both fundamentals and real on-chain usage matter.
Think of it this way: If a network is growing across sectors like DeFi, NFTs, and TVL, it usually means the underlying tech is solid. For blockchains, that tech often comes down to the smart contract language powering the chain.
Right now, Sui [SUI] and Aptos [APT] are the main players, each trying to win over developers and build the next big “Move” ecosystem. However, data from Electric Capital shows one chain is pulling ahead.
Source: Electric Capital
As the chart shows, Sui clocks 954 monthly active developers, 2x Aptos’ 465, highlighting its stronger traction with builders. More developers typically mean more on-chain activity, which helps a network scale more quickly.
Notably, this on-chain strength seems to have helped SUI weather the 2025 bear cycle better. The L1 ended the year down 65%, compared to APT’ 80.7% decline, reflecting its relative resilience amid market pressures.
But price and developer numbers only tell part of the story. The real question is whether all that momentum is translating into actual growth, like NFTs and other on-chain activity. Put simply: Is SUI winning there, too?
SUI & APT in DeFi: How ‘Move’ reflects chain momentum
For L1s, scalability is basically the ticket to winning in DeFi.
Ultimately, the primary use case for blockchains is to facilitate money transfers without intermediaries. So naturally, the L1 that can process payments smoothly and run complex DeFi apps tends to come out on top.
The Total Value Locked (TVL) is a key way to measure this. Higher TVL usually means more liquidity, more activity, and a stronger DeFi ecosystem overall. In this context, SUI is pulling ahead, with about 2x the TVL of APT.
Source: DeFiLlama
From an operational perspective, this aligns closely with developer activity.
More builders on SUI mean more projects being deployed, which boosts TVL. In other words, SUI’s lead in developer adoption is directly feeding its DeFi growth, showing how it’s gaining an edge in the ‘Move’ developer war.
Meanwhile, APT is clearly lagging on all three fronts (developer activity, technical capacity, and operational performance), showing it still has some ground to make up if it wants to compete in the DeFi ecosystem.
Final Thoughts
- SUI’s higher number of active developers is fueling more projects, on-chain activity, and overall ecosystem momentum.
- With roughly 2× the TVL of APT, SUI is translating its developer lead into tangible DeFi growth and network resilience.