Fastest free Gram RPC, live no-key endpoint latency
HTTP round-trip latency for getMasterchainInfo against every available public Gram (TON) node, audited every 60 seconds from 3 regions.
TL;DR. As of , 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.
Companion page
Comparing free RPC endpoints across every chain we measure? Open the cross-chain RPC matrix →
Gram (formerly TON/Toncoin) is a high-throughput L1 blockchain using the BAG (Byzantine Agreement for Gram) consensus protocol and a multi-workchain architecture anchored by a masterchain. The masterchain seqno advances roughly every 5 seconds with deterministic finality. Public JSON-RPC endpoints are available from TON Center, OnFinality, Tatum and Uniblock. Every provider was live-verified with consecutive getMasterchainInfo probes at launch.
Methodology
Per-chain member of the RPC latency cluster, extended to Gram. We measure the round-trip latency of a single JSON-RPC call (getMasterchainInfo) against every available public Gram node that sustains continuous probing: 4 providers at launch, every 60 seconds, from us-east, eu-west and Singapore. The harness classifies every response (ok / http_err / jsonrpc_err / stale / timeout) with a Gram-scaled staleness gap (60 seqnos, around 5 min). The cross-chain view lives on the parent rpc-capabilities benchmark; this page is the Gram-scoped answer with per-region breakdowns as a first-class dimension.
Frequently asked
What is the fastest free Gram (TON) RPC right now?
Tatum currently leads at 29 ms (getMasterchainInfo seqno p50 over the last 24h), measured against 4 providers probed every 60 seconds from us-east, eu-west and Singapore. The leaderboard re-sorts continuously against fresh Prometheus samples.
Which Gram RPC endpoints work without an API key?
4 endpoints sustain continuous keyless probing at launch: TON Center (1 req/s), OnFinality, Tatum and Uniblock. Every listed endpoint was live-verified with a getMasterchainInfo call returning a parsable seqno before inclusion.
Does the fastest Gram RPC change by region?
Often. Public infra concentrates in specific regions; a gateway that wins from Amsterdam can lose from Singapore by multiples. The region tabs at the top of the page re-scope every number to a single origin.
How is Gram RPC latency measured here, technically?
One getMasterchainInfo JSON-RPC call every 60 seconds against each provider from each of 3 regions. Wall-clock round-trip is recorded at millisecond precision; p50/p90/p99 are computed via Prometheus quantile_over_time over 24 hours. Best-effort measurements; p50 is the median, p90 the 90th percentile and p99 the 99th percentile of latency samples collected over the last 24 hours.
Source code github.com/ChainBench/OpenChainBench/tree/main/harnesses/rpc-capabilities