Solana vs Cardano

Which is more decentralized — Solana or Cardano? A side-by-side on consensus, nodes, clients and governance.

	Solana	Cardano
Grade	C+	A-
Type	L1 · PoS + PoH	L1 · PoS (Ouroboros)
Nakamoto coefficient	~29	50+
Node / validator set	~770 validators (down from ~2,560 in 2023)	~3,000 stake pools
Clients / sequencer	Agave + Firedancer (diversifying)	Mostly one node implementation (a concentration risk)
Governance	Off-chain + foundation programs (SFDP)	On-chain (CIP-1694 / Voltaire)
Key risk	Validator count fell ~65% to ~770	A few large stake pools still matter

Solana C+

Nakamoto coefficient ~29
Adding a second client (Firedancer)
Geographically distributed validators

Validator count down ~65% since 2023
High hardware cost to run a node

Cardano A-

Very high Nakamoto coefficient (50+)
~3,000 independent stake pools
On-chain, token-holder governance

Limited node-client diversity
Founding entities still influential

Bottom line

Mid-tier and improving on clients, but the falling validator count is a real concern. Among the most decentralized L1s by consensus, held back mainly by client monoculture.