Fastest free Cronos RPC, live no-key endpoint latency
HTTP round-trip latency for eth_blockNumber against every free, no-key public Cronos RPC endpoint, audited every 15 seconds from 3 regions.
Companion page
Comparing free RPC endpoints across every chain we measure? Open the cross-chain RPC matrix →
Cronos fields 4 no-key providers and encodes two integration traps from our sweep: PublicNode serves the chain at `cronos-evm-rpc.publicnode.com` (the intuitive `cronos-rpc` subdomain resolves but returns non-JSON), and 1RPC uses the ticker path `1rpc.io/cro`. Tenderly's public gateway does not reach Cronos, making this one of the few pages in the cluster without it. Probes every 15 seconds from three regions.
Methodology
Per-chain member of the RPC latency cluster. We measure the round-trip latency of a single, identical RPC call (`eth_blockNumber`) against every no-key public Cronos endpoint that sustains continuous probing, 4 providers, every 15 seconds, from us-east, eu-west and Singapore. The harness also classifies every response (ok / http_err / jsonrpc_err / stale / timeout) and audits archive depth every 5 minutes, so the leaderboard rewards sustained, honest availability rather than a fast error message. The cross-chain view lives on the parent rpc-capabilities benchmark; this page is the Cronos-scoped answer with per-region breakdowns as a first-class dimension.
Frequently asked
What is the fastest free Cronos RPC right now?
dRPC currently leads at 15 ms (`eth_blockNumber` p50 over the last 24h), measured against 4 no-key providers probed every 15 seconds from us-east, eu-west and Singapore. The leaderboard re-sorts continuously against fresh Prometheus samples, so the answer on this page is the answer right now, not a quarterly snapshot. Use the region tabs to see the leader from the origin closest to your deployment.
Which Cronos RPCs work without an API key?
The 4 providers on this page: PublicNode, dRPC, 1RPC, Cronos. Every (provider, chain) pair was live-verified no-key before inclusion, and anything that key-gates, region-blocks or rate-limits below our 15-second cadence is excluded rather than listed with an asterisk.
Does the fastest Cronos RPC change by region?
Frequently. The headline number averages three probe origins (us-east, eu-west, Singapore), but per-region leaders regularly diverge, a gateway that wins from Virginia can lose from Singapore by multiples. The region tabs at the top of the page re-scope every number on the page to a single origin; pick the one closest to where your requests actually originate.
How is Cronos RPC latency measured here?
One identical JSON-RPC POST (`eth_blockNumber`) every 15 seconds against each provider from each of 3 regions, with the same plain HTTP client. 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. The harness is open source and every number on this page is a public Prometheus query you can run yourself.
Why isn't MeowRPC listed on Cronos?
We tried it. MeowRPC's long-tail endpoints no longer resolve (DNS gone), and the provider appears defunct outside a few legacy chains, so it failed the live verification, eth_chainId match plus sustained probing, that gates admission to this cluster. Directories still listing it are copying stale metadata; this bench only ranks endpoints that answer.
Source code github.com/ChainBench/OpenChainBench/tree/main/harnesses/rpc-capabilities