Aster leads on 4 of 5 shared benchmarks, Kalshi on 1. Aster wins on Perp DEX volume share, live 24h notional ranked ($2.33B vs $1.62B), Perp DEX funding stability, 24h stddev of ETH funding ranked (0.0067% vs 0.015%), Most tradable markets on a perp DEX, live count per venue (586 vs 20), Perp DEX asset breadth (124 vs 2). Kalshi wins on Cheapest perp venue to hold a position, live funding normalized (1.17 bps vs 2.40 bps).
Read methodology Last measured Window: rolling 24h5 shared benchmarks
Aster is a decentralized perps exchange (ex-ApolloX, backed by YZi Labs) on BNB Chain and other EVM networks, with a Binance-compatible API and 8 hour funding periods.
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 (1h for Hyperliquid and dYdX, 4h or 8h elsewhere); 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.
Ranked only with 24 hours of funding history (288 samples) and a stddev above zero: a young listing, or a venue whose rate has not moved since listing (Ondo Perps at launch, Polymarket in July), reads artificially stable and shows as Provisional, never as the leader. Stability is not directionality: a persistently positive but tight band ranks above a rate that flips every settlement.
Market count reflects the Mobula perp pairs catalog at query time. Only mainnet markets are counted (testnets excluded). Asset class tags (forex, stocks, indices, commodities) are assigned by Mobula's editorial taxonomy and updated when new pairs are listed. Venues not in the Mobula catalog (Hyperliquid, GMX, dYdX, Ostium, Vertex, Paradex, Aster) are monitored separately: their catalogs are crypto-only or verified crypto-only by native API.
Frequently asked questions
Aster vs Kalshi: which one is better?
Aster and Kalshi are compared on 5 shared OpenChainBench benchmarks. Aster leads on Perp DEX volume share, live 24h notional ranked. 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 24h perp volume, Aster or Kalshi?
On the Perp DEX volume share, live 24h notional ranked benchmark, Aster leads at $2.33B versus Kalshi at $1.62B. Live measurement is updated continuously by the OpenChainBench harness.
Which is cheaper, Aster or Kalshi?
On the Cheapest perp venue to hold a position, live funding normalized benchmark, Kalshi leads at 1.17 bps versus Aster at 2.40 bps. Live measurement is updated continuously by the OpenChainBench harness.
How is the Aster 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.
