{"slug":"gram-rpc","title":"Fastest free Gram RPC, live no-key endpoint 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":28.9464,"leader":{"name":"Tatum","slug":"tatum","value":28.9464},"rankings":[{"name":"Tatum","slug":"tatum","ms":{"p50":28.9464,"p90":43.1501,"p99":94.566,"mean":33.1761},"successRate":100,"sampleSize":4300.62},{"name":"OnFinality","slug":"onfinality","ms":{"p50":212.589,"p90":478.761,"p99":2222.74,"mean":316.069},"successRate":99.9767,"sampleSize":4302.62},{"name":"TON Center","slug":"toncenter","ms":{"p50":252.98,"p90":698.448,"p99":2134.01,"mean":432.93},"successRate":99.95349999999999,"sampleSize":4318.63}],"sparkline":[31.4552,31.0077,30.9108,30.6702,31.2061,33.256,36.2966,36.4379,35.0369,33.766,33.735,35.228,35.5959,36.1909,34.9436,33.5773,32.3566,33.2237,33.5531,34.2101,34.119,34.623,34.1171,34.0593,33.0509,34.5947,35.9525,37.806,38.8348,40.1456,42.072,41.8148,68.6605,67.2409,65.084,36.7804,35.8775,36.0965,35.0227,32.7036,32.2857,30.6729,31.2242,29.8428,30.7266,30.094,29.1701,27.79,26.4375,26.0607,25.9522,27.7331,27.7196,27.0503,25.0815,25.3158,26.061,26.4693,26.8059,26.6905,27.229,27.6498,27.971,27.9033,27.4535,28.8004,29.2272,29.4632,28.8083,28.9681,29.7866,29.3775,30.4114],"sampleSize":17232.489999999998,"asOf":"2026-08-20T03:50:46.752Z","headline":"Tatum leads rpc latency at 29 ms (p50, 24h) on Fastest free Gram RPC, live no-key endpoint latency.","quote":"Tatum leads rpc latency at 29 ms (p50, 24h) on Fastest free Gram RPC, live no-key endpoint latency. Source: OpenChainBench (https://openchainbench.com/benchmarks/gram-rpc).","cite":{"plain":"OpenChainBench. \"Fastest free Gram RPC, live no-key endpoint latency\". Retrieved 2026-08-20. https://openchainbench.com/benchmarks/gram-rpc","bibtex":"@misc{ocb_gram_rpc,\n  author = {OpenChainBench},\n  title  = {Fastest free Gram RPC, live no-key endpoint latency},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/gram-rpc},\n  note   = {Retrieved 2026-08-20}\n}","apa":"OpenChainBench. (2026). Fastest free Gram RPC, live no-key endpoint latency. Retrieved August 20, 2026, from https://openchainbench.com/benchmarks/gram-rpc","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Fastest free Gram RPC, live no-key endpoint latency\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/gram-rpc\r\nY2  - 2026-08-20\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: client-side round-trip delta in milliseconds, exposed as both a gauge and a histogram (buckets 50 ms to 10 s), so percentiles are computed via Prometheus quantile_over_time over the last 24 hours.","Call-result classification: ok (HTTP 200 + parsable result.last.seqno), http_err, jsonrpc_err, stale (seqno more than 60 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 benchmark; the identical harness, cadence and exclusion rules apply on every chain.","Chain scope: every query on this page is pinned to chain=gram. Provider coverage at launch: 4 endpoints (TON Center, OnFinality, Tatum, Uniblock)."],"license":"CC-BY-4.0"}