{"slug":"union-rpc","title":"Union RPC endpoints: free public URLs by latency","subtitle":"HTTP round-trip latency for Tendermint /status queries against every available public Union (union-1) endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":112.614,"leader":{"name":"Nodes.Guru","slug":"nodes-guru","value":112.614},"leaders":[{"name":"Nodes.Guru","slug":"nodes-guru","value":112.614}],"rankings":[{"name":"Nodes.Guru","slug":"nodes-guru","ms":{"p50":112.614,"p90":119.386,"p99":158.703,"mean":114.36},"successRate":97.6036,"sampleSize":4301.86},{"name":"Stake And Relax","slug":"stakeandrelax","ms":{"p50":133.065,"p90":160.438,"p99":425.588,"mean":137.546},"successRate":100,"sampleSize":4316.79}],"sparkline":[99.0979,97.6408,97.5547,98.5636,99.6789,99.5679,98.4549,101.253,106.572,112.694,113.387,140.245,134.28,129.095,97.0659,104.45,110.136,115.537,113.427,117.942,117.955,117.347,113.232,112.997,117.535,121.56,125.684,125.338,122.641,113.714,112.242,112.312,112.481,113.194,112.484,106.163,100.515,96.0067,110.201,110.576,110.768,101.896,113.799,120.614,121.835,116.764,117.836,118.073,118.687,116.905,116.204,115.231,115.522,116.283,115.319,114.819,114.664,114.723,114.888,114.429,114.989,114.419,114.118,114.17,114.809,116.148,116.102,117.222,116.809,118.24,116.686,117.272,116.058],"sampleSize":12920.439999999999,"asOf":"2026-10-10T05:04:48.824Z","freshness":{"asOf":"2026-10-10T05:04:48.824Z","ageHours":0.1,"stale":false},"measured":2,"ranked":2,"headline":"Nodes.Guru has the lowest median latency of the 2 free public Union RPC endpoints measured, 113 ms (p50, 24h, 3 regions).","quote":"Nodes.Guru has the lowest median latency of the 2 free public Union RPC endpoints measured, 113 ms (p50, 24h, 3 regions). Source: OpenChainBench (https://openchainbench.com/benchmarks/union-rpc).","cite":{"plain":"OpenChainBench. \"Union RPC endpoints: free public URLs by latency\". Retrieved 2026-10-10. https://openchainbench.com/benchmarks/union-rpc","bibtex":"@misc{ocb_union_rpc,\n  author = {OpenChainBench},\n  title  = {Union RPC endpoints: free public URLs by latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/union-rpc},\n  note   = {Retrieved 2026-10-10}\n}","apa":"OpenChainBench. (2026). Union RPC endpoints: free public URLs by latency. Retrieved October 10, 2026, from https://openchainbench.com/benchmarks/union-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Union RPC endpoints: free public URLs by latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/union-rpc\r\nY2  - 2026-10-10\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/union-rpc","ogImage":"https://openchainbench.com/api/og/union-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: GET /status. The result.sync_info.latest_block_height field (string-encoded integer) is extracted as the current block height.","Latency measurement, call-result classification (`ok`, `http_err`, `jsonrpc_err`, `stale`, `timeout`) and the archive-depth audit follow the cluster method documented on [rpc-capabilities](https://openchainbench.com/benchmarks/rpc-capabilities#methodology); this page is the Union-scoped view of the same harness, with the same exclusion rules.","Chain scope: every query on this page is pinned to chain=union. Provider coverage today: 2 endpoints."],"license":"CC-BY-4.0"}