{"slug":"iotex-rpc","title":"Fastest free IoTeX RPC, live no-key endpoint latency","subtitle":"HTTP round-trip latency for eth_getBlockByNumber against every free, no-key public IoTeX RPC endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":112.661,"leader":{"name":"IoTeX Mirror","slug":"iotex-mirror","value":112.661},"rankings":[{"name":"IoTeX Mirror","slug":"iotex-mirror","ms":{"p50":112.661,"p90":123.857,"p99":178.74,"mean":115.457},"successRate":100,"sampleSize":4326.85}],"sparkline":[113.706,114.936,116.032,115.996,115.104,114.343,115.072,114.171,113,112.197,113.118,113.152,113.436,113.514,114.921,115.974,116.328,115.717,114.714,114.898,115.976,115.917,114.912,115.17,115.023,115.666,114.159,115.817,115.697,117.389,116.963,119.508,120.694,122.45,119.668,118.276,119.289,121.839,123.164,121.355,119.858,123.056,122.705,123.574,118.376,118.128,118.799,119.265,118.362,116.263,116.778,117.654,118.86,118.496,117.645,115.732,114.497,114.349,113.89,113.448,113.011,111.721,109.66,107.704,107.157,107.881,108.994,110.363,110.217,109.456,109.669,109.786,109.746],"sampleSize":12966.54,"asOf":"2026-09-19T02:32:00.958Z","headline":"IoTeX Mirror posts the lowest rpc latency at 113 ms (p50, 24h) on Fastest free IoTeX RPC, live no-key endpoint latency.","quote":"IoTeX Mirror posts the lowest rpc latency at 113 ms (p50, 24h) on Fastest free IoTeX RPC, live no-key endpoint latency. Source: OpenChainBench (https://openchainbench.com/benchmarks/iotex-rpc).","cite":{"plain":"OpenChainBench. \"Fastest free IoTeX RPC, live no-key endpoint latency\". Retrieved 2026-09-19. https://openchainbench.com/benchmarks/iotex-rpc","bibtex":"@misc{ocb_iotex_rpc,\n  author = {OpenChainBench},\n  title  = {Fastest free IoTeX RPC, live no-key endpoint latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/iotex-rpc},\n  note   = {Retrieved 2026-09-19}\n}","apa":"OpenChainBench. (2026). Fastest free IoTeX RPC, live no-key endpoint latency. Retrieved September 19, 2026, from https://openchainbench.com/benchmarks/iotex-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Fastest free IoTeX RPC, live no-key endpoint latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/iotex-rpc\r\nY2  - 2026-09-19\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/iotex-rpc","ogImage":"https://openchainbench.com/api/og/iotex-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: `{\"jsonrpc\":\"2.0\",\"id\":<rotating>,\"method\":\"eth_getBlockByNumber\",\"params\":[\"latest\",false]}`. Plain HTTP POST, identical for every endpoint, no API key in any request.","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` (HTTP 200 + non-empty result), `http_err`, `jsonrpc_err` (HTTP 200 carrying an error body), `stale` (more than 20 blocks behind the cross-provider tip), `timeout`.","This page is part of the per-chain RPC cluster derived from the cross-chain [rpc-capabilities](https://openchainbench.com/benchmarks/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=\"iotex\"`. Provider coverage at launch: 3 no-key endpoints (IoTeX Mirror, Ankr, Thirdweb)."],"license":"CC-BY-4.0"}