Ostium fees & measured trading cost

DEXEarn Ostium Points

Ostium does not use a conventional order book: it settles futures trades against an oracle price. FeeFloor therefore doesn’t calculate order-book spread or slippage for it and reports the protocol cost components its current model supports. FeeFloor measures Ostium's futures market on BTC, ETH, SOL and XRP, live against every venue we track, and a $100K BTC futures order currently reports $60.83 in those components. Funding, borrowing, price-impact and withdrawal costs sit outside that figure and aren’t included here.

Markets measured: futures
Assets: BTC, ETH, SOL and XRP
Pricing: oracle-priced (no order book)

Live verdict · $100K BTC futures · taker

Measured 22:35 UTC · updates every minute

Rank

#36

of 49 venues

Measured cost

6.08 bps

fee + spread + slippage

On a $100K trade

$60.83

what you actually pay

Vs the floor

+$57.84

Lighter sets it at 0.30 bps

No markup, no paid placement — the ranking above is pure measurement.

Trade on OstiumEarn Ostium Points

Where the cost comes fromat $100K

Fee

6.00 bps

$60.00 on a $100K trade

The published taker fee — the only number most comparison sites show you.

Spread

0.00 bps

$0.00 on a $100K trade

Half the gap between best bid and ask. You pay it the instant your market order fills.

Slippage

0.08 bps

$0.83 on a $100K trade

Not calculated — this venue settles against an oracle, not an order book, so FeeFloor doesn’t compute book slippage here. Any price-impact term is part of the protocol model, not shown as slippage.

What our measurements show

Ostium's rank moves with trade size: #25 of 49 at $1M, but #42 at $10K. Fees are flat — depth is not.

At $100K, Ostium runs 27% above the median venue we track (6.08 bps vs 4.81 bps).

Pricing comes from an oracle rather than an order book, so FeeFloor reports the 6.00 bps protocol fee and doesn't compute book spread or slippage — the order-book components other venues carry don't apply here. Funding, borrowing and any price-impact terms are separate.

Cost by trade size

Fees are flat, but spread and slippage scale with size — so a venue that wins at $10K can be mid-pack at $10M. BTC futures, taker.

Size	Rank	Total cost	In dollars	Vs the floor
$10K	42	6.08 bps	$6.08	+$5.91 vs Lighter
$100K	36	6.08 bps	$60.83	+$57.84 vs Lighter
$1M	25	6.08 bps	$608.29	+$456.05 vs Lighter
$10M	28	6.08 bps	$6.1K	depth-limited

Cheaper right now$100K BTC futures

XT.COM6.02 bps−$0.67vs

Toobit6.01 bps−$0.75vs

BloFin6.01 bps−$0.75vs

Ostium: quick answers

What does a $100K BTC trade actually cost on Ostium?

As of 2 August 2026, a $100K BTC futures market order on Ostium costs $60.83 all-in (6.08 bps): 6.00 bps fee, 0.00 bps spread and 0.08 bps slippage. That ranks #36 of 49 venues we measure.

Is Ostium better for small or large orders?

Right now, large orders: Ostium ranks #42 at $10K and #28 at $10M. Fees are flat percentages, but slippage grows with size, so the answer shifts with the venue's live order-book depth.

Does Ostium have hidden costs beyond the trading fee?

Ostium does not use a conventional order book — it settles against an oracle price. FeeFloor therefore does not calculate order-book spread or slippage for it and reports the protocol cost components its current model exposes. Funding, borrowing, price-impact and withdrawal costs sit outside that figure.

Ready to trade on Ostium?

New accounts earn Ostium Points from the first trade — on top of $60.83 all-in execution.

Affiliate link · rankings can’t be bought