{"slug":"optimism-rpc","title":"Fastest free Optimism RPC, live no-key endpoint latency","subtitle":"HTTP round-trip latency for eth_getBlockByNumber against every free, no-key public Optimism RPC endpoint, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":100.065,"leader":{"name":"PublicNode","slug":"publicnode","value":100.065},"rankings":[{"name":"PublicNode","slug":"publicnode","ms":{"p50":100.065,"p90":122.99,"p99":202.253,"mean":107.918},"successRate":100,"sampleSize":4317.75},{"name":"dRPC","slug":"drpc","ms":{"p50":168.438,"p90":192.209,"p99":235.965,"mean":158.632},"successRate":76.0417,"sampleSize":4320.75},{"name":"Tenderly","slug":"tenderly","ms":{"p50":239.586,"p90":250.799,"p99":260.033,"mean":239.846},"successRate":100,"sampleSize":4320.75},{"name":"Optimism","slug":"optimism-official","ms":{"p50":331.366,"p90":340.176,"p99":391.811,"mean":332.864},"successRate":99.9537,"sampleSize":4317.75},{"name":"Nodies","slug":"nodies","ms":{"p50":353.351,"p90":362.282,"p99":486.929,"mean":354.503},"successRate":100,"sampleSize":4319.75}],"sparkline":[100.963,97.2129,97.3363,97.4808,97.3362,97.7177,99.9268,101.836,101.937,101.427,101.759,103.342,103.598,102.779,102.018,105.031,106.174,106.584,103.8,104.475,104.211,105.196,104.177,103.915,104.227,104.785,104.256,102.041,101.041,100.954,103.063,103.27,104.04,102.277,102.431,104.692,107.446,107.864,106.362,104.375,106.372,105.369,105.588,103.609,104.284,103.362,103.164,102.799,105.876,106.16,104.804,105.594,113.429,124.212,128.018,127.306,127.738,126.63,124.035,118.244,116.845,115.119,115.136,113.972,114.35,114.603,115.483,116.065,115.362,114.142,114.018,114.37,114.757],"sampleSize":21596.75,"asOf":"2026-08-24T01:39:16.704Z","headline":"PublicNode posts the lowest rpc latency at 100 ms (p50, 24h) on Fastest free Optimism RPC, live no-key endpoint latency.","quote":"PublicNode posts the lowest rpc latency at 100 ms (p50, 24h) on Fastest free Optimism RPC, live no-key endpoint latency. Source: OpenChainBench (https://openchainbench.com/benchmarks/optimism-rpc).","cite":{"plain":"OpenChainBench. \"Fastest free Optimism RPC, live no-key endpoint latency\". Retrieved 2026-08-24. https://openchainbench.com/benchmarks/optimism-rpc","bibtex":"@misc{ocb_optimism_rpc,\n  author = {OpenChainBench},\n  title  = {Fastest free Optimism RPC, live no-key endpoint latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/optimism-rpc},\n  note   = {Retrieved 2026-08-24}\n}","apa":"OpenChainBench. (2026). Fastest free Optimism RPC, live no-key endpoint latency. Retrieved August 24, 2026, from https://openchainbench.com/benchmarks/optimism-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Fastest free Optimism RPC, live no-key endpoint latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/optimism-rpc\r\nY2  - 2026-08-24\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/optimism-rpc","ogImage":"https://openchainbench.com/api/og/optimism-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: 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), `http_err`, `jsonrpc_err` (HTTP 200 carrying an error body), `stale` (more than 20 blocks behind the cross-provider tip), `timeout`. Latency without reliability is a misleading ranking signal.","Archive depth: every 5 minutes we issue `eth_getBalance` at (head − depth) for depths from Geth's default pruned cap up to 5M blocks, exposing which free endpoints actually serve historical state.","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, methodology and exclusion rules apply on every chain.","Chain scope: every query on this page is pinned to chain=\"optimism\". Provider coverage: 5 no-key endpoints (PublicNode, dRPC, Tenderly, Nodies, Optimism). Exclusions follow the cluster-wide rules documented on the parent benchmark."],"license":"CC-BY-4.0"}