{"slug":"gram-rpc","title":"Gram RPC endpoints: free public URLs by latency","subtitle":"HTTP round-trip latency for getMasterchainInfo against every available public Gram (TON) node, audited every 60 seconds from 3 regions.","category":"RPCs","metric":"RPC latency","unit":"ms","status":"live","higherIsBetter":false,"filters":null,"value":46.4881,"leader":{"name":"Tatum","slug":"tatum","value":46.4881},"leaders":[{"name":"Tatum","slug":"tatum","value":46.4881}],"rankings":[{"name":"Tatum","slug":"tatum","ms":{"p50":46.4881,"p90":54.5139,"p99":128.679,"mean":52.5189},"successRate":74.9884,"sampleSize":4314.64},{"name":"TON Center","slug":"toncenter","ms":{"p50":106.335,"p90":293.53,"p99":312.912,"mean":131.965},"successRate":99.9768,"sampleSize":4319.64},{"name":"OnFinality","slug":"onfinality","ms":{"p50":178.34,"p90":227.008,"p99":1166.73,"mean":213.416},"successRate":99.7912,"sampleSize":4311.64},{"name":"Uniblock","slug":"uniblock","ms":{"p50":425.115,"p90":716.572,"p99":2503.96,"mean":497.707},"successRate":55.2469,"sampleSize":4317.64}],"sparkline":[52.5633,52.5282,51.4471,48.1832,48.4345,48.4749,48.4523,47.807,48.1844,49.4759,49.8645,51.5206,49.7448,64.9618,62.488,65.3607,51.4375,52.1424,49.1738,50.121,52.8607,52.9711,51.4553,48.1997,49.1802,51.1699,53.5876,52.4475,51.1428,51.243,51.4952,51.5986,51.2571,51.1293,50.6796,50.0715,50.675,50.4239,48.3525,47.7391,47.7118,49.2507,91.9625,93.0414,92.1588,47.0947,46.9676,47.5687,49.0204,48.8278,48.5992,47.2522,51.761,51.8645,51.6281,48.8191,52.0786,53.5308,52.5136,49.3444,47.6018,47.4623,47.631,48.1821,51.9222,51.9227,52.2865,49.4139,48.4763,47.9901,48.6033,52.9479,54.3358],"sampleSize":17263.56,"asOf":"2026-10-04T06:34:21.082Z","freshness":{"asOf":"2026-10-04T06:34:21.082Z","ageHours":0.1,"stale":false},"measured":4,"ranked":4,"headline":"Tatum has the lowest median latency of the 4 free public Gram RPC endpoints measured, 46 ms (p50, 24h, 3 regions).","quote":"Tatum has the lowest median latency of the 4 free public Gram RPC endpoints measured, 46 ms (p50, 24h, 3 regions). Source: OpenChainBench (https://openchainbench.com/benchmarks/gram-rpc).","cite":{"plain":"OpenChainBench. \"Gram RPC endpoints: free public URLs by latency\". Retrieved 2026-10-04. https://openchainbench.com/benchmarks/gram-rpc","bibtex":"@misc{ocb_gram_rpc,\n  author = {OpenChainBench},\n  title  = {Gram RPC endpoints: free public URLs by latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/gram-rpc},\n  note   = {Retrieved 2026-10-04}\n}","apa":"OpenChainBench. (2026). Gram RPC endpoints: free public URLs by latency. Retrieved October 4, 2026, from https://openchainbench.com/benchmarks/gram-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Gram RPC endpoints: free public URLs by latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/gram-rpc\r\nY2  - 2026-10-04\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/gram-rpc","ogImage":"https://openchainbench.com/api/og/gram-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\":\"getMasterchainInfo\",\"params\":{}}. Plain HTTP POST. The harness handles both the toncenter {ok,result} envelope and standard JSON-RPC 2.0 responses from other providers.","Latency measurement, call-result classification (`ok`, `http_err`, `jsonrpc_err`, `stale`, `timeout`) and the archive-depth audit follow the cluster method documented on [rpc-capabilities](https://openchainbench.com/benchmarks/rpc-capabilities#methodology); this page is the Gram-scoped view of the same harness, with the same exclusion rules.","Chain scope: every query on this page is pinned to chain=gram. Provider coverage today: 4 endpoints."],"license":"CC-BY-4.0"}