Polymarket API rate limits
As of October 30, 2026, Polymarket warm book latency is 97 ms at the median (p50, 24h window), with 221 ms at p90 and 247 ms at p99. Polymarket ranks #1 of 6 chains measured on this benchmark.
Polymarket's CLOB API documents per endpoint budgets (around 1500 requests per 10s for the book endpoint) and sits behind Cloudflare. At our ramp tiers it queues instead of returning 429, so the honest throttle signal is added latency, shown in the ramp panel. The book endpoint embeds a millisecond timestamp, making Polymarket one of only two venues here whose data age is verifiable. Warm book p50: 97 ms.
How Polymarket compares
Live p50 over the last 24 hours across every chain on this benchmark, ranked lowest first.
Methodology, charts and the full ledger live on the Prediction market API rate limits, tested with a daily ramp page. Raw data: JSON endpoint.