{"slug":"flow-rpc","title":"Fastest free Flow RPC, live no-key endpoint latency","subtitle":"HTTP round-trip latency for the Flow Cadence REST endpoint (GET /v1/blocks?height=sealed) against every available public Flow node, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":80.3022,"leader":{"name":"Flow Access Node","slug":"flow-access","value":80.3022},"rankings":[{"name":"Flow Access Node","slug":"flow-access","ms":{"p50":80.3022,"p90":158.92,"p99":331.161,"mean":105.568},"successRate":100,"sampleSize":4313.84},{"name":"Flow Foundation","slug":"onflow","ms":{"p50":83.2774,"p90":163.767,"p99":335.025,"mean":107.659},"successRate":100,"sampleSize":4317.84}],"sparkline":[106.116,104.225,103.333,109.468,113.832,109.63,103.882,99.645,100.782,101.907,107.528,109.932,113.795,113.651,116.406,115.615,108.508,102.105,102.095,109.755,116.189,118.124,116.845,115.257,107.892,106.347,107.808,113.777,115.129,116.852,114.647,115.663,107.343,107.544,98.8881,102.399,99.149,96.2183,88.9039,86.3177,92.3877,100.214,108.392,111.298,107.572,105.259,99.0199,97.6199,98.5706,102.786,101.985,100.852,103.256,107.21,108.148,101.969,100.889,102.122,106.824,107.419,104.651,101.655,104.064,99.372,102.942,102.196,101.127,101.578,97.8011,105.359,102.065,104.611,105.732],"sampleSize":8631.68,"asOf":"2026-08-22T04:08:18.393Z","headline":"Flow Access Node posts the lowest rpc latency at 80 ms (p50, 24h) on Fastest free Flow RPC, live no-key endpoint latency.","quote":"Flow Access Node posts the lowest rpc latency at 80 ms (p50, 24h) on Fastest free Flow RPC, live no-key endpoint latency. Source: OpenChainBench (https://openchainbench.com/benchmarks/flow-rpc).","cite":{"plain":"OpenChainBench. \"Fastest free Flow RPC, live no-key endpoint latency\". Retrieved 2026-08-22. https://openchainbench.com/benchmarks/flow-rpc","bibtex":"@misc{ocb_flow_rpc,\n  author = {OpenChainBench},\n  title  = {Fastest free Flow RPC, live no-key endpoint latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/flow-rpc},\n  note   = {Retrieved 2026-08-22}\n}","apa":"OpenChainBench. (2026). Fastest free Flow RPC, live no-key endpoint latency. Retrieved August 22, 2026, from https://openchainbench.com/benchmarks/flow-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Fastest free Flow RPC, live no-key endpoint latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/flow-rpc\r\nY2  - 2026-08-22\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/flow-rpc","ogImage":"https://openchainbench.com/api/og/flow-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: HTTP GET to <base>/v1/blocks?height=sealed with Accept: application/json. Pure REST endpoint, no API key. The response is a JSON array; [0].header.height is parsed as a decimal string.","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 + parsable height), http_err, stale (block more than 240 behind the cross-provider tip), timeout. Latency without reliability is a misleading ranking signal.","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=flow. Provider coverage at launch: 2 endpoints (Flow Foundation REST, Flow access node)."],"license":"CC-BY-4.0"}