Base block time
As of September 15, 2026, Base block time is 1.94 s at the median (p50, 24h window), with 2.79 s at p90 and 2.98 s at p99. Base ranks #5 of 10 chains measured on this benchmark.
Base block time is 1.94 s (p50, 24h). Base is operated by Coinbase on the OP Stack and inherits its 2 second sequencer cadence; Coinbase has publicly tested a Flashblocks pre-confirmation path at 200 ms but the canonical `newHeads` stream still emits one block every 2 s. Settlement posts to Ethereum via EIP-4844 blobs. Measured live by subscribing to `newHeads` on the public Base sequencer WebSocket and computing T(N+1) minus T(N) in milliseconds.
How Base compares
Live p50 over the last 24 hours across every chain on this benchmark, ranked lowest first.
Methodology, charts and the full ledger live on the Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more page. Raw data: JSON endpoint.