{"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":221,"leader":{"name":"Immutable","slug":"immutable-official","value":221},"rankings":[{"name":"Immutable","slug":"immutable-official","ms":{"p50":221,"p90":226,"p99":256.313,"mean":221.867},"successRate":100,"sampleSize":4321.6},{"name":"Tenderly Gateway","slug":"tenderly","ms":{"p50":327,"p90":340,"p99":379.667,"mean":329.029},"successRate":100,"sampleSize":4312.6},{"name":"dRPC","slug":"drpc","ms":{"p50":344.667,"p90":371.667,"p99":467.567,"mean":306.701},"successRate":90.1412,"sampleSize":4321.6}],"sparkline":[224.706,223.711,223.679,223.382,221.972,222.481,223.681,225.387,224.528,224.779,223.957,224.007,222.692,222.146,222.782,223.864,223.625,223.376,224.232,224.808,223.996,221.544,220.2,220.744,221.862,222.707,222.801,222.085,221.792,221.529,221.166,221.139,221.172,221.214,221.792,221.611,221.918,220.946,220.74,220.244,220.125,220.153,220.306,220.354,220.571,220.853,221.436,221.899,222.258,222.185,221.958,221.858,221.813,221.753,221.511,221.845,221.799,221.778,221.15,221.254,221.851,221.879,221.197,219.829,219.89,220.078,220.304,219.858,220.126,220.751,221.263,221.31,220.831],"sampleSize":17274.4,"asOf":"2026-08-08T12:31:32.468Z","headline":"Immutable leads rpc latency at 221 ms (p50, 24h) on Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency.","quote":"Immutable leads rpc latency at 221 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 2026-08-08. 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 2026-08-08}\n}","apa":"OpenChainBench. (2026). Fastest free Immutable zkEVM RPC, live no-key EVM endpoint latency. Retrieved August 8, 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  - 2026-08-08\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"}