Extended leads on 3 of 3 shared benchmarks, Polymarket on 0. Extended wins on Cheapest perp DEX, live all-in fee on a $1000 ETH 10x long (0.026% vs 0.041%), Perp DEX volume share, live 24h notional ranked ($519.50M vs $49.00M), Perp DEX open interest, live USD notional ranked ($205.33M vs $21.87M).
Starknet perp DEX (formerly X10) with order book matching and instant withdrawals via STARK proofs.
The largest crypto prediction market, settled on Polygon via UMA optimistic oracle. CLOB-style order book hosted on the Polymarket gateway with sub-second publish latency for live odds.
Extended
Leads0.026 %
Polymarket
Trails0.041 %
Per chain
| Chain | Extended | Polymarket |
|---|---|---|
| ETH | 0.028% | 0.043% |
| BTC | 0.026% | 0.041% |
| SOL | 0.032% | 0.041% |
Extended
Leads$519.50M
Polymarket
Trails$49.00M
Extended
Leads$205.33M
Polymarket
Trails$21.87M
A pair is published when all four conditions hold. Both providers run in the same OpenChainBench benchmark for at least seven consecutive days. Each provider has at least 1000 samples in the measurement window. The head to head query has observable third party search demand. Both providers have a public /products/[slug] page on OCB. The full pair ledger is versioned in the public repo so the methodology is externally verifiable.