Fastest free Mode RPC, live no-key EVM endpoint latency
Mode Labs leads rpc latency at 176 ms (p50, 24h) on Fastest free Mode RPC, live no-key EVM endpoint latency. HTTP round-trip latency for the `eth_getBlockByNumber(\"latest\", false)` method against every free, no-key public Mode EVM endpoint, audited every 60 seconds from 3 regions.
TL;DR. As of , Mode Labs leads rpc latency at 176 ms (p50, 24h) on Fastest free Mode RPC, live no-key EVM endpoint latency. Source: OpenChainBench, https://openchainbench.com/benchmarks/mode-rpc.
Companion page
Comparing free RPC endpoints across every chain we measure? Open the cross-chain RPC matrix →
Mode is an OP Stack rollup (chain 34443) in the Base / Superchain ecosystem, ETH gas, DeFi + AI-agent positioning, with a 2 s sequencer cadence and standard blob calldata settlement on Ethereum. The 2026-07-03 sweep excluded Mode with 3 providers; the 2026-07-26 re-audit adds Thirdweb which is now live on Mode, bringing the count to 4 clean keyless providers. Excluded by this re-launch: Tenderly public (no `mode` route), Blast API (discontinued), MeowRPC + PublicNode (no `mode` subdomain). Every provider live-verified with 4 consecutive keyless probes.
Methodology
Per-chain member of the RPC latency cluster, extended to Mode. We measure the round-trip latency of a single, identical JSON-RPC call (`eth_getBlockByNumber(\"latest\", false)`) against every no-key public Mode endpoint that sustains continuous probing, 4 providers at launch, every 60 seconds, from us-east, eu-west and Singapore. The harness classifies every response (ok / http_err / jsonrpc_err / stale / timeout) with a Mode-scaled staleness gap (25 blocks at Mode's ~2 s block time). The cross-chain view lives on the parent `rpc-capabilities` benchmark; this page is the Mode-scoped answer with per-region breakdowns as a first-class dimension.
Frequently asked
What is the fastest free Mode RPC right now?
Mode Labs currently leads at 176 ms (`eth_getBlockByNumber("latest", false)` p50 over the last 24h), measured against 4 no-key providers probed every 60 seconds from us-east, eu-west and Singapore. The leaderboard re-sorts continuously against fresh Prometheus samples. Use the region tabs to see the leader from the origin closest to your deployment.
Which Mode RPCs work without an API key?
4 endpoints sustain continuous keyless probing at launch. Every listed endpoint was live-verified with a `eth_getBlockByNumber` POST returning a parsable response before inclusion. See the methodology section for the endpoints that were audited and excluded.
Does the fastest Mode RPC change by region?
Often. Public infra concentrates in specific regions; a gateway that wins from Amsterdam can lose from Singapore by multiples. The region tabs at the top of the page re-scope every number to a single origin; pick the one closest to where your requests originate.
How is Mode RPC latency measured here, technically?
One identical `eth_getBlockByNumber("latest", false)` POST every 60 seconds against each provider from each of 3 regions, using the same plain HTTP client the rest of the RPC cluster uses. Wall-clock round-trip is recorded at millisecond precision; p50/p90/p99 are computed via Prometheus `quantile_over_time` over 24 hours. Responses are classified (`ok` / `http_err` / `jsonrpc_err` / `stale` / `timeout`) so an endpoint stuck on an old head or returning errors behind HTTP 200 is never ranked as fastest.
Source code github.com/ChainBench/OpenChainBench/tree/main/harnesses/rpc-capabilities