{"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":89.6667,"leader":{"name":"PublicNode","slug":"publicnode","value":89.6667},"rankings":[{"name":"PublicNode","slug":"publicnode","ms":{"p50":89.6667,"p90":145.333,"p99":2505,"mean":166.649},"successRate":99.8373,"sampleSize":4312.62},{"name":"dRPC","slug":"drpc","ms":{"p50":163.333,"p90":173.6,"p99":236.333,"mean":167.989},"successRate":53.459999999999994,"sampleSize":4321.6},{"name":"Tenderly","slug":"tenderly","ms":{"p50":240,"p90":251.667,"p99":260.333,"mean":240.674},"successRate":100,"sampleSize":4319.6},{"name":"Nodies","slug":"nodies","ms":{"p50":270.667,"p90":282.667,"p99":443.333,"mean":276.722},"successRate":100,"sampleSize":4320.6},{"name":"Optimism","slug":"optimism-official","ms":{"p50":330.333,"p90":338.667,"p99":412.333,"mean":332.484},"successRate":100,"sampleSize":4320.6}],"sparkline":[95.3875,97.4569,98.6552,101.738,103.927,107.4,129.878,152.412,154.606,134.015,122.003,122.586,128.313,124.65,121.19,113.454,107.526,110.128,113.667,114.217,114.104,114.637,117.097,117.482,111.664,109.632,111.836,117.085,120.182,115.101,108.862,105.992,104.417,112.576,112.024,116.444,110.374,108.039,104.319,105.018,107.453,109.082,108.651,109.525,111.272,113.399,112.843,112.839,112.218,111.438,118.531,118.731,122.643,116.085,116.238,111.939,108.045,107.313,100.814,93.6375,89.7306,91.9778,93.4764,102.761,106.217,191.747,335.857,511.854,493.146,562.504,605.342,720.585,771.726],"sampleSize":21595.020000000004,"asOf":"2026-08-08T12:19:02.557Z","headline":"PublicNode leads rpc latency at 90 ms (p50, 24h) on Fastest free Optimism RPC, live no-key endpoint latency.","quote":"PublicNode leads rpc latency at 90 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 2026-08-08. 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 2026-08-08}\n}","apa":"OpenChainBench. (2026). Fastest free Optimism RPC, live no-key endpoint latency. Retrieved August 8, 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  - 2026-08-08\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"}