Starknet vs 
Arbitrum
The two families of Ethereum rollup, side by side. Arbitrum is optimistic: it assumes transactions are valid and allows a challenge window, which means withdrawals to Ethereum take about a week. Starknet uses validity proofs, so correctness is proven cryptographically and withdrawals settle faster, at the cost of a custom language and heavier proving work. Arbitrum leads on liquidity today; validity proofs are where most of the research money is going.
12 months, both starting at 100 (AUD)
STRK → 26 · ARB → 39| Measure | STRK | ARB |
|---|---|---|
| Market cap | A$0.4B | A$2.1B |
| Rank | #153 | #62 |
| Price | A$0.055 | A$0.3103 |
| 90-day change (AUD) | +23.4% | +183.3% |
| 12-month change (AUD) | −69.4% | −52.8% |
| From all-time high | −99.2% | −91.3% |
| Supply model | Capped: 10.00B max | Capped: 10.00B max |
| AU exchanges we verify it on | 3 | 3 |
About Starknet
About Arbitrum
Arbitrum is the largest Ethereum layer-2 network by activity, processing transactions cheaply and settling them back to Ethereum. ARB governs the protocol's DAO.
FAQ
Which is bigger, Starknet or Arbitrum?
By market value today: Arbitrum (A$2.1B vs A$0.4B). Size measures money invested, not quality — but it does measure liquidity, which affects how easily you can buy and sell.
Which performed better this year?
Over the past 12 months in AUD terms: STRK −69.4%, ARB −52.8% — the chart above shows the whole path, which matters more than the endpoints. Past performance is no indicator of future results, in either direction.
Can I buy both in Australia?
Yes — both are listed on AUSTRAC-registered exchanges we verify. STRK appears on 3 of our reviewed platforms and ARB on 3. Compare costs first on the fee calculator, and remember every crypto-to-crypto swap between them is a CGT event.
Should I hold STRK or ARB?
That's a personal decision we don't make for you — this page exists to make the structural differences clear so the choice is yours. What we'd say to anyone: understand what job each coin is designed for, size positions like the risk is real, and check the honest failure statistics before going further down the market-cap list.
Data from our market records (powered by CoinGecko), refreshed with the daily rebuild. General information only, not financial advice — we compare structure and history, we don't pick winners.