{"slug":"icon-rpc","title":"Fastest free ICON RPC, live no-key endpoint latency","subtitle":"HTTP round-trip latency for icx_getLastBlock queries against every available public ICON blockchain endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":13.0747,"leader":{"name":"ICON Foundation","slug":"icon-solidwallet","value":13.0747},"rankings":[{"name":"ICON Foundation","slug":"icon-solidwallet","ms":{"p50":13.0747,"p90":19.1394,"p99":35.516,"mean":14.2679},"successRate":100,"sampleSize":4317.54},{"name":"ICON Community","slug":"icon-community","ms":{"p50":190.832,"p90":444.189,"p99":734.086,"mean":240.341},"successRate":100,"sampleSize":4318.54},{"name":"iconblockchain.xyz","slug":"iconblockchain","ms":{"p50":196.016,"p90":545.092,"p99":711.483,"mean":261.493},"successRate":99.9536,"sampleSize":4316.54}],"sparkline":[10.6759,10.4788,10.2704,10.2277,10.2119,10.1161,10.1612,10.4873,11.139,11.357,11.3739,10.9352,11.1773,11.3381,11.704,11.9844,12.2662,12.6593,13.0472,13.4792,13.7324,13.9195,14.579,15.2919,15.9098,16.2437,16.3323,16.5543,16.1294,16.1478,15.6472,15.2199,14.7893,14.4853,14.7993,14.8078,14.8721,14.61,14.6503,14.8872,14.6108,14.2371,14.8799,15.4943,16.1153,16.2254,16.0537,16.1603,16.0201,16.6823,17.9508,19.2097,19.0349,18.2153,17.2787,17.2766,16.9622,16.2361,15.6316,15.0312,14.7003,14.5698,14.5099,14.5525,14.2573,15.7924,15.4359,15.3016,13.9397,12.8422,12.5575,11.1494,10.8796],"sampleSize":12952.619999999999,"asOf":"2026-09-01T21:15:18.044Z","headline":"ICON Foundation posts the lowest rpc latency at 13 ms (p50, 24h) on Fastest free ICON RPC, live no-key endpoint latency.","quote":"ICON Foundation posts the lowest rpc latency at 13 ms (p50, 24h) on Fastest free ICON RPC, live no-key endpoint latency. Source: OpenChainBench (https://openchainbench.com/benchmarks/icon-rpc).","cite":{"plain":"OpenChainBench. \"Fastest free ICON RPC, live no-key endpoint latency\". Retrieved 2026-09-01. https://openchainbench.com/benchmarks/icon-rpc","bibtex":"@misc{ocb_icon_rpc,\n  author = {OpenChainBench},\n  title  = {Fastest free ICON RPC, live no-key endpoint latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/icon-rpc},\n  note   = {Retrieved 2026-09-01}\n}","apa":"OpenChainBench. (2026). Fastest free ICON RPC, live no-key endpoint latency. Retrieved September 1, 2026, from https://openchainbench.com/benchmarks/icon-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Fastest free ICON RPC, live no-key endpoint latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/icon-rpc\r\nY2  - 2026-09-01\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/icon-rpc","ogImage":"https://openchainbench.com/api/og/icon-rpc","source":"https://github.com/ChainBench/OpenChainBench/tree/main/harnesses/rpc-capabilities","methodology":["Cadence: every 60 seconds per provider, from each of 3 probe regions (us-east Virginia, eu-west Amsterdam, sgp Singapore). Headline p50/p90/p99 aggregate across all 3 regions via Prometheus avg(quantile_over_time(...)); per-region breakdowns are first-class on this page via the region tabs.","Payload: POST /api/v3 with method icx_getLastBlock. The result.height field (decimal integer) is extracted as the current block height.","Latency: client-side round-trip delta in milliseconds, exposed as both a gauge and a histogram (buckets 50 ms to 10 s), so percentiles are computed via Prometheus quantile_over_time over the last 24 hours.","Call-result classification: ok (parsable block height returned), http_err, jsonrpc_err, stale (block more than 150 behind the cross-provider tip, roughly 5 min at ICON's 2 s block time), timeout.","This page is part of the per-chain RPC cluster derived from the cross-chain rpc-capabilities benchmark; the identical harness, cadence and exclusion rules apply on every chain.","Chain scope: every query on this page is pinned to chain=icon. Provider coverage at launch: 3 endpoints (ICON Foundation, ICON Community, iconblockchain.xyz)."],"license":"CC-BY-4.0"}