{"slug":"superseed-rpc","title":"Superseed RPC endpoints: free public URLs by latency","subtitle":"HTTP round-trip latency for the `eth_getBlockByNumber(\\\"latest\\\", false)` method against every free, no-key public Superseed EVM endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":137.187,"leader":{"name":"Superseed","slug":"superseed-official","value":137.187},"leaders":[{"name":"Superseed","slug":"superseed-official","value":137.187}],"rankings":[{"name":"Superseed","slug":"superseed-official","ms":{"p50":137.187,"p90":143.531,"p99":178.256,"mean":138.641},"successRate":100,"sampleSize":759.824},{"name":"dRPC","slug":"drpc","ms":{"p50":331.401,"p90":424.751,"p99":630.498,"mean":330.605},"successRate":100,"sampleSize":779.839}],"sparkline":[79.6337,139.132,139.562,138.973,139.149,139.346,139.01,139.146,139.147,140.002,139.418,137.465,137.727,136.575],"sampleSize":2295.485,"asOf":"2026-10-07T22:53:44.586Z","freshness":{"asOf":"2026-10-07T22:53:44.586Z","ageHours":0,"stale":false},"measured":2,"ranked":2,"headline":"Superseed has the lowest median latency of the 2 free public Superseed RPC endpoints measured, 137 ms (p50, 24h, 3 regions).","quote":"Superseed has the lowest median latency of the 2 free public Superseed RPC endpoints measured, 137 ms (p50, 24h, 3 regions). Source: OpenChainBench (https://openchainbench.com/benchmarks/superseed-rpc).","cite":{"plain":"OpenChainBench. \"Superseed RPC endpoints: free public URLs by latency\". Retrieved 2026-10-07. https://openchainbench.com/benchmarks/superseed-rpc","bibtex":"@misc{ocb_superseed_rpc,\n  author = {OpenChainBench},\n  title  = {Superseed RPC endpoints: free public URLs by latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/superseed-rpc},\n  note   = {Retrieved 2026-10-07}\n}","apa":"OpenChainBench. (2026). Superseed RPC endpoints: free public URLs by latency. Retrieved October 7, 2026, from https://openchainbench.com/benchmarks/superseed-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Superseed RPC endpoints: free public URLs by latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/superseed-rpc\r\nY2  - 2026-10-07\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/superseed-rpc","ogImage":"https://openchainbench.com/api/og/superseed-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. Non-cacheable by design: the rotating id defeats edge caches that would answer a bare head query without touching a node.","Latency measurement, call-result classification (`ok`, `http_err`, `jsonrpc_err`, `stale`, `timeout`) and the exclusion rules follow the cluster method documented on [rpc-capabilities](https://openchainbench.com/benchmarks/rpc-capabilities#methodology); this page is the Superseed-scoped view of the same harness.","Roster: every endpoint here answered a real `eth_getBlockByNumber` call without a key on the 2026-10-07 sweep before being added to the probe matrix. An endpoint that needs a key, region-blocks us or rate-limits below the 60-second cadence is excluded rather than listed with an asterisk.","Chain scope: every query on this page is pinned to `chain=\"superseed\"`. Provider coverage: 2 no-key endpoints."],"license":"CC-BY-4.0"}