{"slug":"blast-rpc","title":"Blast RPC endpoints: free public URLs by latency","subtitle":"HTTP round-trip latency for eth_getBlockByNumber against every free, no-key public Blast RPC endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":3.9965,"leader":{"name":"Blast","slug":"blast-official","value":3.9965},"leaders":[{"name":"Blast","slug":"blast-official","value":3.9965}],"rankings":[{"name":"Blast","slug":"blast-official","ms":{"p50":3.9965,"p90":4.4049,"p99":5.08071,"mean":4.07434},"successRate":100,"sampleSize":4318.87},{"name":"PublicNode","slug":"publicnode","ms":{"p50":70.7596,"p90":79.338,"p99":159.407,"mean":73.7217},"successRate":100,"sampleSize":4318.87},{"name":"dRPC","slug":"drpc","ms":{"p50":185.385,"p90":353.68,"p99":481.972,"mean":215.936},"successRate":99.4672,"sampleSize":4317.87}],"sparkline":[3.98237,3.97427,3.96788,4.0069,4.04269,4.05962,4.08386,4.09279,4.09487,4.05448,4.03737,4.06443,4.10119,4.12001,4.09068,4.07231,4.07341,4.09337,4.1227,4.12691,4.33017,4.28459,4.24686,4.0679,4.11803,4.15912,4.11334,4.07846,4.04241,4.0786,4.11651,4.14947,4.13924,4.11681,4.16541,4.19274,4.23805,4.14756,4.06975,4.01492,4.0665,4.06564,4.07748,4.0563,4.09293,4.06406,4.05104,4.03466,4.03833,4.07434,4.09553,4.08062,4.05456,4.01089,4.05599,4.05691,4.07045,4.0308,4.02329,4.01037,4.00306,3.99131,4.00141,3.98699,3.97848,3.96828,3.98592,3.98673,3.98756,4.03746,4.06715,4.06228,4.01504],"sampleSize":17276.48,"asOf":"2026-10-06T08:30:20.431Z","freshness":{"asOf":"2026-10-06T08:30:20.431Z","ageHours":0.1,"stale":false},"measured":3,"ranked":3,"headline":"Blast has the lowest median latency of the 3 free public Blast RPC endpoints measured, 4 ms (p50, 24h, 3 regions).","quote":"Blast has the lowest median latency of the 3 free public Blast RPC endpoints measured, 4 ms (p50, 24h, 3 regions). Source: OpenChainBench (https://openchainbench.com/benchmarks/blast-rpc).","cite":{"plain":"OpenChainBench. \"Blast RPC endpoints: free public URLs by latency\". Retrieved 2026-10-06. https://openchainbench.com/benchmarks/blast-rpc","bibtex":"@misc{ocb_blast_rpc,\n  author = {OpenChainBench},\n  title  = {Blast RPC endpoints: free public URLs by latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/blast-rpc},\n  note   = {Retrieved 2026-10-06}\n}","apa":"OpenChainBench. (2026). Blast RPC endpoints: free public URLs by latency. Retrieved October 6, 2026, from https://openchainbench.com/benchmarks/blast-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Blast RPC endpoints: free public URLs by latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/blast-rpc\r\nY2  - 2026-10-06\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/blast-rpc","ogImage":"https://openchainbench.com/api/og/blast-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 latest-header fetch with a rotating id defeats edge caches that answer eth_blockNumber without touching a node.","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 Blast-scoped view of the same harness, with the same exclusion rules.","Chain scope: every query on this page is pinned to chain=\"blast\". Provider coverage: 3 no-key public-read endpoints live today, each listed with its URL in the endpoints table on this page. Exclusions follow the cluster-wide rules documented on the parent benchmark."],"license":"CC-BY-4.0"}