{"slug":"immutable-rpc","title":"Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency","subtitle":"HTTP round-trip latency for the `eth_getBlockByNumber(\\\"latest\\\", false)` method against every free, no-key public Immutable zkEVM EVM endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":224,"leader":{"name":"Immutable","slug":"immutable-official","value":224},"rankings":[{"name":"Immutable","slug":"immutable-official","ms":{"p50":224,"p90":232.667,"p99":251.463,"mean":225.162},"successRate":100,"sampleSize":3731.7},{"name":"Tenderly Gateway","slug":"tenderly","ms":{"p50":330,"p90":340,"p99":361,"mean":330.967},"successRate":100,"sampleSize":3646.69},{"name":"dRPC","slug":"drpc","ms":{"p50":348.333,"p90":373,"p99":667.193,"mean":311.499},"successRate":78.133,"sampleSize":3718.72}],"sparkline":[229.785,228.216,229.293,227.029,226.244,224.467,224.3,223.022,222.378,223.861,225.728,227.008,227.136,225.602,224.723,225.871,227.51,227.867,223.592,223.282,223.926,225.553,225.113,224.041,225.815,226.487,227.068,226.778,226.512,226.511,225.957,227.704,227.039,226.637,224.86,225.999,225.278,224.975,223.289,223.917,224.246,224.468,225.083,225.485,225.96,225.821,225.192,225.219,224.739,225.263,226.522,225.403,224.483,222.247,222.925,223.368,223.996,224.371,222.975,222.185,222.091,223.157],"sampleSize":14813.83,"asOf":"2026-07-27T11:45:52.768Z","headline":"Immutable leads rpc latency at 224 ms (p50, 24h) on Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency.","quote":"Immutable leads rpc latency at 224 ms (p50, 24h) on Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency. Source: OpenChainBench (https://openchainbench.com/benchmarks/immutable-rpc).","cite":{"plain":"OpenChainBench. \"Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency\". Retrieved 2026-07-27. https://openchainbench.com/benchmarks/immutable-rpc","bibtex":"@misc{ocb_immutable_rpc,\n  author = {OpenChainBench},\n  title  = {Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/immutable-rpc},\n  note   = {Retrieved 2026-07-27}\n}","apa":"OpenChainBench. (2026). Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency. Retrieved July 27, 2026, from https://openchainbench.com/benchmarks/immutable-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/immutable-rpc\r\nY2  - 2026-07-27\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/immutable-rpc","ogImage":"https://openchainbench.com/api/og/immutable-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: client-side round-trip delta in milliseconds, exposed as both a gauge and a histogram (buckets 50 ms → 10 s), so percentiles are computed via Prometheus `quantile_over_time` over the last 24 hours.","Call-result classification: `ok` (HTTP 200 + non-empty result with a parsable hex block number), `http_err`, `jsonrpc_err` (HTTP 200 carrying an error body), `stale` (more than 25 blocks 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](https://openchainbench.com/benchmarks/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=\"immutable\"`. Provider coverage at launch: 4 no-key endpoints."],"license":"CC-BY-4.0"}