{"slug":"optimism-rpc","title":"Fastest free Optimism RPC, live no-key endpoint latency","subtitle":"HTTP round-trip latency for eth_blockNumber against every free, no-key public Optimism RPC endpoint, audited every 15 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"value":90.3333,"leader":{"name":"PublicNode","slug":"publicnode","value":90.3333},"rankings":[{"name":"PublicNode","slug":"publicnode","ms":{"p50":90.3333,"p90":210.667,"p99":423.433,"mean":122.012},"successRate":99.9884,"sampleSize":8636.82},{"name":"dRPC","slug":"drpc","ms":{"p50":164.667,"p90":177.333,"p99":268,"mean":169.298},"successRate":70.1158,"sampleSize":8641.82},{"name":"Nodies","slug":"nodies","ms":{"p50":181.333,"p90":271.667,"p99":359.333,"mean":203.65},"successRate":100,"sampleSize":8638.82},{"name":"Tenderly","slug":"tenderly","ms":{"p50":239.333,"p90":251,"p99":263.667,"mean":240.581},"successRate":100,"sampleSize":8639.82},{"name":"Optimism","slug":"optimism-official","ms":{"p50":333,"p90":343.667,"p99":367.333,"mean":334.67},"successRate":99.9653,"sampleSize":8641.82},{"name":"1RPC","slug":"1rpc","ms":{"p50":1321.33,"p90":5890,"p99":6940.67,"mean":2530.82},"successRate":0.7874950000000001,"sampleSize":8636.82}],"sparkline":[97.3052,104.848,102.623,105.707,108.232,108.558,104.84,95.4893,110.65,124.585,138.075,130.86,131.498,126.351,121.794,109.515,102.422,102.086,102.622,102.593,103.11,101.24,108.813,108.318,110.682,107.704,119.565,135.524,146.029,140.508,132.464,128.497,126.653,127.485,131.151,138.431,139.875,145.033,145.81,148.71,141.293,139.256,133.732,135.967],"sampleSize":51835.92,"asOf":"2026-07-08T04:40:52.348Z","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 2026-07-08. 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 2026-07-08}\n}","apa":"OpenChainBench. (2026). Fastest free Optimism RPC, live no-key endpoint latency. Retrieved July 8, 2026, from https://openchainbench.com/benchmarks/optimism-rpc"},"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 15 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\":1,\"method\":\"eth_blockNumber\",\"params\":[]}`. Plain HTTP POST, identical for every endpoint, no API key in any request.","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: 6 no-key endpoints (PublicNode, dRPC, 1RPC, Tenderly, Nodies, Optimism). Exclusions follow the cluster-wide rules documented on the parent benchmark."],"license":"CC-BY-4.0"}