API3USDT perpetual

Contract data read from Binance, Bybit, OKX and Hyperliquid public endpoints · 2026-10-03 21:16:58 UTC

API3USDT is a USDT-margined perpetual on Binance, marked at 0.2904 USDT inside a 24-hour band of 0.2672–0.3016 (8.07%). Open interest is 10,010,637.6 API3, about 2.91M USDT in live exposure, against 4.59M USDT traded in 24 hours. Funding settles every 4 hours at 0.0050%, 0.00001452 USDT per API3 held.

Mark price	0.2904 USDT
24h range	0.2672 – 0.3016 USDT
24h change	8.07%
24h volume	4.59M USDT
Open interest	10,010,637.6 API3
Open interest value	2.91M USDT
Funding rate	0.0050% / 4h
Minimum order	5 USDT ≈ 17.217631 API3
Quantity step	0.1 API3 ≈ 0.02904 USDT
Price tick	0.0001 USDT (0.03444% of mark)

At 0.0050% the long pays the short: a 10,000 USDT position moves 0.5000 USDT every 4 hours, 3.000 USDT a day, 10.95% a year.
Daily turnover runs 1.58× the 2.91M USDT sitting in open positions.
Bybit caps this contract at 25×, so initial margin starts near 4.00% of notional — 0.01162 USDT per API3.
Binance caps each settlement at ±2.00% — at most 0.005808 USDT per API3, 4,380% annualised.

Annualised funding, each venue on its own 4/4/4-hour cycle: Binance 10.95% · Bybit 114.08% · OKX 10.95%. The gap is 103.13 points — Binance is the cheapest venue to hold a long here, Bybit the dearest.

FAQ

API3USDT questions

Binance requires 5 USDT of notional, which at 0.2904 USDT is 17.217631 API3; size then moves in steps of 0.1 API3.

Every 4 hours. The current rate is 0.0050% — 0.00001452 USDT per API3 per settlement, 10.95% a year if it holds.

Open interest is 10,010,637.6 API3 (2.91M USDT) with 4.59M USDT changing hands over 24 hours.

Bybit allows up to 25×, putting initial margin around 4.00% of position value — 0.01162 USDT per API3 at the current mark.

Run your own rules on API3USDT