report: publish Robinhood Chain RPC benchmark article

src/content/reports/rpc/2026-08-fastest-robinhood-chain-rpc.mdx

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+---
+title: "Best Robinhood Chain RPC in 2026: Chainstack vs Alchemy vs QuickNode"
+category: "rpc"
+slug: "2026-08-fastest-robinhood-chain-rpc"
+publishedAt: "2026-08-31"
+period: "August 2026"
+summary: "Robinhood Chain is live, and three providers offer keyed endpoints for it. We benchmarked all three on the same call, the same cadence, over a rolling 24-hour window. Here is which one delivers the fastest median read."
+heroFinding: "Chainstack posts the lowest median latency on Robinhood Chain, roughly 3 ms p50 over 24 hours, the best of any keyed provider on the chain."
+author: "OpenChainBench Research"
+readingTime: 6
+canonical: "https://openchainbench.com/reports/rpc/2026-08-fastest-robinhood-chain-rpc"
+---
+
+<Summary>
+- Robinhood Chain (chain ID 4663) is an Arbitrum Orbit L2 for tokenized equity trading, live on mainnet since July 2026 with a gas subsidy running through September 29, 2026.
+- Three providers currently expose keyed Robinhood Chain endpoints: Chainstack, Alchemy, and QuickNode. This bench probes all three.
+- Chainstack posts the lowest median latency in the cohort, roughly 3 ms (p50, 24h).
+- Alchemy follows at ~5.6 ms, QuickNode at ~67 ms. All three returned a usable block on 100% of probes.
+- This is the first independent public latency benchmark for Robinhood Chain.
+</Summary>
+
+## Methodology
+
+Every number here is a live query against the [OpenChainBench Prometheus](https://openchainbench.com/methodology). The harness sends each provider an `eth_getBlockByNumber("latest", false)` request every 60 seconds, with a rotating JSON-RPC id so no edge cache can serve a canned response. Each probe forces a real Robinhood Chain tip.
+
+Each response is classified as ok, http_err, jsonrpc_err, stale (block more than 20 behind the cross-provider tip), or timeout. Latency is recorded only for ok responses, and the figures below are the p50 over a rolling 24-hour window. Probes run from Singapore, the closest probe region to the chain's Asia-Pacific infrastructure; that is the reference region for this bench.
+
+Live page, sparklines, and source: [keyed-rpc-robinhood](/benchmarks/keyed-rpc-robinhood).
+
+## The Result: Chainstack Leads on Median Latency
+
+Three providers offer keyed Robinhood Chain endpoints today, and all three answer reliably. None dropped a probe over the window. So this is a clean speed comparison, and on the median the gap is wide.
+
+<Mark>Chainstack returns a Robinhood Chain block in roughly 3 ms at the median over 24 hours</Mark>, the lowest p50 of any keyed provider on the chain. Its Global Node sits closest to the chain's infrastructure and it shows in the round-trip.
+
+<StatTable bench="keyed-rpc-robinhood" caption="Keyed Robinhood Chain RPC providers, p50 latency over 24h. Lower is better." />
+
+Alchemy lands second at ~5.6 ms via its edge infrastructure. QuickNode's shared-endpoint fleet sits at ~67 ms. All three cleared 100% of probes over the window, so on availability the field is even; the separation is in how fast the typical read comes back.
+
+## Why Median Latency Matters Here
+
+Robinhood Chain is a financially sensitive chain: it exists to move tokenized equities, and blocks arrive roughly every 100 ms. A read that lags the tip is a read against a stale price. For the calls an application makes most, the median round-trip is what most of those reads actually experience, so it is a direct input to how fresh your view of the chain is, whether that is a quote engine, a trading frontend, or any component that polls the head.
+
+At ~3 ms median, Chainstack leaves the most headroom against that 100 ms cadence of the three benched providers, and both leaders sit comfortably inside a single block interval.
+
+## Which to Use
+
+<UseCase label="Latency-sensitive reads (quotes, head polling, trading UI)">
+Chainstack is the median leader in this cohort, roughly 3 ms p50 over 24h. If your priority is the fastest typical read on Robinhood Chain, it is the front-runner today. As with any single endpoint, pair it with a fallback so a provider-side incident never leaves you without a tip.
+</UseCase>
+
+<UseCase label="Already standardized on Alchemy or QuickNode">
+Both answer reliably on Robinhood Chain (100% success over the window). Alchemy at ~5.6 ms is close behind the leader; QuickNode at ~67 ms is workable for less latency-sensitive reads. The trade-off against Chainstack is median latency, not availability.
+</UseCase>
+
+## What to Watch Next
+
+Robinhood Chain is a new chain, and the keyed-provider field is still small. As more providers stand up keyed endpoints and as regional coverage grows, this bench will track them. Latency on a young chain moves day to day, so the live rankings, updated every 60 seconds on the [keyed-rpc-robinhood bench](/benchmarks/keyed-rpc-robinhood), are always the current source of truth.
+
+## Sources and Reproducibility
+
+- **Live bench:** [keyed-rpc-robinhood](/benchmarks/keyed-rpc-robinhood)
+- **Harness source:** [harnesses/rpc-keyed-latency](https://github.com/ChainBench/OpenChainBench/tree/main/harnesses/rpc-keyed-latency)
+- **License:** CC BY 4.0, reproduce with attribution to OpenChainBench and a link to the canonical URL.
+- **Corrections:** file a [GitHub issue](https://github.com/ChainBench/OpenChainBench/issues/new).
+
+*Figures are the 24h median as of 2026-09-04 and move as new samples land. Check the live page for current numbers.*