Split decision: edgeX leads on Most tradable markets on a perp DEX, live count per venue (176 vs 21) and Perp DEX volume to open interest (2.63x vs 40.5x); Kalshi leads on Cheapest perp venue to hold a position, live funding normalized (2.03 bps vs 3.00 bps) and Funding paid to hold an ETH perp long for 30 days, per venue, live (62.7 bps vs 90.0 bps). Data as of 2026-09-23 UTC.
Read methodology Last measured Window: rolling 24h4 shared benchmarks
CFTC-regulated US prediction market exchange. REST trade API (trade-api/v2) with documented per-tier rate limits; the market data WebSocket requires authentication.
Funding is signed. Positive means longs pay shorts, negative means longs get paid to hold. Venues settle on different native periods (hourly on Hyperliquid, dYdX, Lighter, Extended, Pacifica, Ondo, Vest, StandX and ApeX, every 4h on edgeX, every 8h on Kalshi, Aster and the CEX books); every figure is normalized from the venue's own quoted rate and interval before ranking. Funding is only the holding cost. Opening costs (taker fee, spread, impact) are the companion bench perp-fees.
The ratio is a screen, not a verdict. Both terms are the venue's own
figures (24h volume and open interest as each API reports them, in USD),
so a venue that counts both legs of a fill moves its ratio without
changing anything real. A very low ratio (Ostium, 0.2x) means positions
held for days on thin daily volume; a very high one (Kalshi, above 40x)
means a day of trading dwarfs what stays open. The bands in the
methodology say what each range usually means.
Every row is a month of funding at the venue's average daily cost over
the hours measured in the trailing 30 days (average x 30). A venue
ranks only with 576 of the 720 hours (24 days) behind that average;
under the floor the row is provisional, unranked, and shows its day
count (the venues added on 2026-09-22 and 2026-09-23 start there).
Funding is signed: on a month where shorts paid longs the figure is
negative and "cheapest" means "was paid the most".
Frequently asked questions
edgeX vs Kalshi: which one is better?
edgeX and Kalshi are compared on 4 shared OpenChainBench benchmarks. edgeX leads on Most tradable markets on a perp DEX, live count per venue. Kalshi leads on Cheapest perp venue to hold a position, live funding normalized. See the live table on this page for every metric.
Which has the higher active markets, edgeX or Kalshi?
On the Most tradable markets on a perp DEX, live count per venue benchmark, edgeX leads at 176 versus Kalshi at 21. Live measurement is updated continuously by the OpenChainBench harness.
Which is cheaper, edgeX or Kalshi?
On the Cheapest perp venue to hold a position, live funding normalized benchmark, Kalshi leads at 2.03 bps versus edgeX at 3.00 bps. Live measurement is updated continuously by the OpenChainBench harness.
How is the edgeX vs Kalshi comparison measured?
Every benchmark on this page uses the same open methodology, published at https://openchainbench.com/methodology. Data is CC-BY-4.0. Measurement harnesses are MIT-licensed.
Auto-generated pairs require: both providers in the same benchmark for seven consecutive days, at least 1000 samples per provider, observable third-party search demand, and a public /products/[slug] page on OCB. Editorially curated pairs (like this one) may publish early when search demand is high and data is accruing; panels with fewer than 100 samples are shown as provisional. The full pair ledger is versioned in the public repo.
