{"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":181.269,"leader":{"name":"IoTeX Mirror","slug":"iotex-mirror","value":181.269},"rankings":[{"name":"IoTeX Mirror","slug":"iotex-mirror","ms":{"p50":181.269,"p90":205.405,"p99":440.343,"mean":195.68},"successRate":99.9538,"sampleSize":4327.75}],"sparkline":[188.428,187.862,229.411,275.674,285.635,237.694,190.675,186.037,187.124,185.678,184.747,185.4,184.927,184.494,182.847,182.258,182.986,184.242,183.122,179.479,175.942,180.368,184.857,188.309,185.757,181.423,178.61,177.279,181.608,186.348,191.256,187.854,186.278,188.43,193.808,194.617,192.398,191.335,191.792,193.492,195.031,196.858,194.198,188.309,184.627,183.108,185.648,183.762,181.566,180.415,183.765,185.093,183.996,193.337,194.258,195.968,186.242,186.086,187.784,185.608,184.544,181.522,182.64,187.647,198.449,229.509,247.877,242.888,215.668,202.381,208.87,234.2,243.22],"sampleSize":12972.25,"asOf":"2026-08-14T15:53:41.663Z","headline":"IoTeX Mirror leads rpc latency at 181 ms (p50, 24h) on Fastest free IoTeX RPC, live no-key endpoint latency.","quote":"IoTeX Mirror leads rpc latency at 181 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 2026-08-14. 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 2026-08-14}\n}","apa":"OpenChainBench. (2026). Fastest free IoTeX RPC, live no-key endpoint latency. Retrieved August 14, 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  - 2026-08-14\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"}