OpenChainBench
Full benchmark: Best prediction market API, ranked by live latency and uptime
TradingKalshi

Kalshi API latency

As of August 1, 2026, Kalshi API latency (price endpoint) is 317 ms at the median (p50, 24h window), with 385 ms at p90 and 432 ms at p99. Kalshi ranks #3 of 5 chains measured on this benchmark.

Kalshi's public single market endpoint goes to origin on every request and currently answers at 317 ms p50 warm (24h). That makes its uptime figure here a clean origin measurement, unlike its CDN cached market list. Kalshi is the regulated US venue and the only one in the cohort with a documented API contract, so an unexplained dip in its health gauge is more notable than elsewhere. If Kalshi's API seems down for you, compare the per region figures: a single region dip usually means a network issue, not a venue outage.

How Kalshi compares

Live p50 over the last 24 hours across every chain on this benchmark, ranked lowest first.

  1. #1Limitless95 ms
  2. #2Polymarket200 ms
  3. #3Kalshi317 ms
  4. #4Manifold325 ms
  5. #5Myriad1.27 s

Methodology, charts and the full ledger live on the Best prediction market API, ranked by live latency and uptime page. Raw data: JSON endpoint.