{"slug":"sei-rpc","title":"Sei 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 Sei EVM endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":61.7466,"leader":{"name":"Sei Labs","slug":"sei-official","value":61.7466},"leaders":[{"name":"Sei Labs","slug":"sei-official","value":61.7466}],"rankings":[{"name":"Sei Labs","slug":"sei-official","ms":{"p50":61.7466,"p90":148.963,"p99":470.562,"mean":92.9004},"successRate":99.6278,"sampleSize":4313.8},{"name":"Stakeme","slug":"stakeme","ms":{"p50":161.839,"p90":201.473,"p99":333.176,"mean":172.256},"successRate":100,"sampleSize":4315.75}],"sparkline":[77.8646,92.6643,173.046,176.967,178.599,113.654,124.781,125.029,131.839,126.161,117.267,96.1664,84.7062,83.5809,79.0694,67.2948,66.9896,72.0637,78.4911,76.8443,69.5822,63.619,54.4332,75.7606,95.4155,109.388,106.271,97.3837,90.6356,75.2154,73.5595,69.4359,70.4608,63.1666,62.1546,63.2971,85.3339,84.3393,85.1226,66.6241,76.6067,73.3854,69.9063,59.1196,59.5666,58.804,62.4505,62.2915,63.698,61.2272,61.3607,59.8397,60.1946,62.6182,75.7009,135.221,218.017,384.976,309.853,200.74,77.0539,82.9173,95.1131,111.635,116.155,100.408,82.0916,68.6892,70.7378,69.6049,73.415,73.15,81.9679],"sampleSize":12946.3,"asOf":"2026-10-25T15:52:50.454Z","freshness":{"asOf":"2026-10-25T15:52:50.454Z","ageHours":0,"stale":false},"measured":2,"ranked":2,"headline":"Sei Labs has the lowest median latency of the 2 free public Sei RPC endpoints measured, 62 ms (p50, 24h, 3 regions).","quote":"Sei Labs has the lowest median latency of the 2 free public Sei RPC endpoints measured, 62 ms (p50, 24h, 3 regions). Source: OpenChainBench (https://openchainbench.com/benchmarks/sei-rpc).","cite":{"plain":"OpenChainBench. \"Sei RPC endpoints: free public URLs by latency\". Retrieved 2026-10-25. https://openchainbench.com/benchmarks/sei-rpc","bibtex":"@misc{ocb_sei_rpc,\n  author = {OpenChainBench},\n  title  = {Sei RPC endpoints: free public URLs by latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/sei-rpc},\n  note   = {Retrieved 2026-10-25}\n}","apa":"OpenChainBench. (2026). Sei RPC endpoints: free public URLs by latency. Retrieved October 25, 2026, from https://openchainbench.com/benchmarks/sei-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Sei RPC endpoints: free public URLs by latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/sei-rpc\r\nY2  - 2026-10-25\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/sei-rpc","ogImage":"https://openchainbench.com/api/og/sei-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. The request id rotates, but that does not guarantee a cache miss: many caches normalise `id` away. Measured 2026-10-08, fixed and rotating ids answer within 2 to 4 percent of each other.","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 Sei-scoped view of the same harness, with the same exclusion rules.","Chain scope: every query on this page is pinned to `chain=\"sei\"`. Provider coverage: 2 no-key endpoints. dRPC removed (500 persistent internal error)."],"license":"CC-BY-4.0"}