Fastest free Swellchain RPC, live no-key EVM endpoint latency
HTTP round-trip latency for the `eth_getBlockByNumber(\"latest\", false)` method against every free, no-key public Swellchain EVM endpoint, audited every 60 seconds from 3 regions.
TL;DR. As of , Ankr leads rpc latency at 17 ms (p50, 24h) on Fastest free Swellchain RPC, live no-key EVM endpoint latency. Source: OpenChainBench, https://openchainbench.com/benchmarks/swellchain-rpc.
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Comparing free RPC endpoints across every chain we measure? Open the cross-chain RPC matrix →
Swellchain is an OP Stack L2 (chain 1923) operated by Swell Network, the restaking-native rollup built on EigenLayer, ETH gas token, ~2 s block cadence, blob calldata settlement on Ethereum. 2026-08-03 re-audit brings the total to 4 clean keyless providers: Ankr (rpc.ankr.com/swell), Sentio (swell-mainnet.rpc.sentio.xyz), Thirdweb (1923.rpc.thirdweb.com), and dRPC (swell.drpc.org). Excluded: official alt.technology endpoint (401 Unauthorized without key), Alchemy (key required).
Methodology
Per-chain member of the RPC latency cluster, extended to Swellchain. We measure the round-trip latency of a single, identical JSON-RPC call (`eth_getBlockByNumber(\"latest\", false)`) against every no-key public Swellchain 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 Swellchain-scaled staleness gap (20 blocks at Swellchain's ~2 s block time). The cross-chain view lives on the parent `rpc-capabilities` benchmark; this page is the Swellchain-scoped answer with per-region breakdowns as a first-class dimension.
Frequently asked
What is the fastest free Swellchain RPC right now?
Ankr currently leads at 17 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 Swellchain RPCs work without an API key?
4 endpoints sustain continuous keyless probing: Ankr (rpc.ankr.com/swell), Sentio (swell-mainnet.rpc.sentio.xyz), Thirdweb (1923.rpc.thirdweb.com), and dRPC (swell.drpc.org). The official Swell alt.technology endpoint requires authorization. Every listed endpoint was live-verified with a `eth_getBlockByNumber` POST returning a parsable response before inclusion.
Does the fastest Swellchain 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 Swellchain 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