Arbitrum vs Polkadot

Arbitrum4.2/5

VS

Polkadot3.7/5

Feature	ArbitrumVisit	PolkadotVisit
Ratings
Our score	4.2/5	3.7/5
User rating	No reviews yet	No reviews yet
Performance	4.5	4.0
Fees	4.5	3.5
Ecosystem	5.0	3.5
Decentralization	3.0	4.0
Developer experience	4.5	3.5
Specs
Layer	Layer 2	Layer 1
Consensus / design	Optimistic rollup	Proof of Stake
Native token	ARB	DOT
EVM compatible	Yes	No
Smart contract languages	Solidity, Rust (Stylus)	Rust, ink!
Block time	~0.25 seconds	6 seconds
Finality	~7 days (dispute window)	Deterministic (GRANDPA)
Mainnet since	2,021	2,020
Sequencer	Centralized	Not applicable
Data availability	Ethereum L1 calldata / EIP-4844 blobs	Relay Chain validator verification
Gas paid in	ETH	DOT
Company
Founded	2021	2020
Headquarters	United States	Switzerland
Investors	Coinbase Ventures, IOSG Ventures, OKX Ventures, ParaFi Capital +1	Private Token Sale Investors, Public ICO Participants, 1kx, Blockchange Ventures +6
Strengths and weaknesses
Pros	Secured over $12.3B in value with 2.7 billion lifetime transactions by mid-2026 Supports smart contracts in Rust, C, and C++ alongside standard EVM Solidity Fast sub-second block times around 0.25 seconds with gas settled in ETH	Parachains inherit shared validator security from the main Relay Chain Cross-chain data transfers operate natively without custodial bridges Mainnet operating since May 2020 Core codebase licensed under open-source GPL-3.0 terms
Cons	Sequencer remains centralized, creating liveness and transaction ordering dependencies ARB staking through the DAO does not distribute protocol fee revenue to holders Substantial non-circulating ARB supply remains subject to scheduled token unlocks	Native token supply inflates by approximately 10% annually Relay Chain does not support native user smart contracts directly Over $150M of early proceeds were frozen in a 2017 Parity wallet bug
Best for	High-frequency DeFi traders, Rust and Solidity smart contract developers, Teams launching dedicated Orbit appchains	Appchain developers needing shared security, Projects requiring trustless cross-chain messaging, Stakers seeking native governance participation

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