Cheapest perp DEX, live all-in cost from $1k to $1M on ETH, BTC and SOL
Trading| Provider | All-in cost | All-in at $100k | All-in at $1M |
|---|---|---|---|
| GMX | 0.060% | 0.060% | 0.060% |
| Polymarket | 0.044% | 0.052% | 0.088% |
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GMXn/aPolymarketn/a
GMX vs Polymarket
Polymarket leads on all 3 live benchmarks. Polymarket wins on Cheapest perp DEX, live all-in cost from $1k to $1M on ETH, BTC and SOL (0.044% vs 0.060%), Perp DEX volume share, live 24h notional ranked ($107.87M vs $77.53M), Perp DEX volume to open interest (1.723x vs 3.04x). Data as of 2026-09-24 UTC.
GMX
Perp DEX on Arbitrum and Avalanche. Pool-based execution against GLP and GM vaults, oracle-priced trades with no orderbook.
Polymarket
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.
Side by side measurements
Perp DEX volume share, live 24h notional ranked
TradingGMX
Trails$77.53M
- p99
- $90.87M
- rank
- #18
- samples
- 2,876
Polymarket
Leads$107.87M
- p99
- $119.82M
- rank
- #17
- samples
- 2,876
24h perp volume
GMXn/aPolymarketn/a
Perp DEX volume to open interest: 24h turnover per dollar of OI, live
TradingGMX
Trails3.04x
- p99
- 3.56x
- rank
- #17
- samples
- 2,876
Polymarket
Leads1.723x
- p99
- 1.914x
- rank
- #10
- samples
- 2,876
Volume / OI (24h)
GMXn/aPolymarketn/a
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.
Frequently asked questions
GMX vs Polymarket: which one is better?
GMX and Polymarket are compared on 3 shared OpenChainBench benchmarks. Polymarket leads on Cheapest perp DEX, live all-in cost from $1k to $1M on ETH, BTC and SOL. See the live table on this page for every metric.
Which is cheaper, GMX or Polymarket?
On the Cheapest perp DEX, live all-in cost from $1k to $1M on ETH, BTC and SOL benchmark, Polymarket leads at 0.044% versus GMX at 0.060%. Live measurement is updated continuously by the OpenChainBench harness.
How is the GMX vs Polymarket 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.
Related comparisons
How this pair was selected
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.