For the latest and most accurate information on applicable fees, please refer to your local OKX fee page.Key Changes Update and Alignment of Group 1 Token Pairs for Spot and Futures The USDT and USDⓈ pairs for the following tokens will be placed under Group 1: BTC / DOGE / ETH / PEPE / PUMP / SOL / SUI / XRP / ADA / LTC PENGU pairs in Spot Group 1 will be moved to Group 2 insteadSpot Markets - Group Definitions Group Description Pairs Group 1 Top Pairs ADA-USDT,ADA-USDⓈ,BTC-USDT,BTC-USDⓈ,DOGE-USDT

Learn more on how to read our available trading pairs and refer to the code below. 1 import okx.Account as Account 2 3 # API initialization 4 apikey = "YOUR_API_KEY" 5 secretkey = "YOUR_SECRET_KEY" 6 passphrase = "YOUR_PASSPHRASE" 7 8 flag = "1" # Production trading: 0, Demo trading: 1 9 10 accountAPI = Account.AccountAPI(apikey, secretkey, passphrase, False, flag) 11 12 result = accountAPI.get_instruments(instType="SPOT") 13 print(result)7. How can I read my account balance?

3% 4% 5% 6% 7% 15% 21% 27% 30% 30% 30% 40% Tier 6: 50,000,000 - 80,000,000 USD 4% 5% 6% 7% 8% 17% 27% 30% 30% 30% 30% 40% Tier 7: 80,000,000 - 120,000,000 USD 5% 6% 7% 8% 12% 20% 30% 30% 30% 30% 30% 40% Tier 8: 120,000,000+ USD 30% 30% 30% 30% 30% 30% 30% 30% 30% 30% 30% 40% USDC-USD tiers USDC-USD index = USDC dollar price Cross-currency hedging delta volume Above 0.995 0.99 0.98 0.97 0.96 0.95 0.94 0.93 0.92 0.91 0.9 Below 0.8 Tier 1: 0 - 1,000,000 USD 0.5% 0.5% 1% 2% 3% 5% 10% 15% 20% 25% 30%

Index-based limit calculation rules: Phase Maximum bid price Minimum ask price During Pre-Open session Index × (1 + J) Index × (1 – J) Within the 10 minutes of continuous trading Index × (1 + X) Index × (1 – X) After the first 10 minutes of continuous trading Min[Max(Index, Index (1 + Y) + Avg premium in the last 2 mins), Index × (1 + Z)] Max[Min(Index, Index × (1 – Y) + Avg premium in the last 2 mins), Index × (1 – Z)] OKX may adjust the parameters J, X, Y, Z or switch limit price calculation methods

Trader A (Maker fee: 0.02%; Taker fee: 0.03%) bought 100 contracts of call options (notional is 1 BTC): If trader A is the taker when order filled, so the Trading fee = Min(0.03% × 0.01 × 1 × 100, 7% × 0.05 × 0.01 × 1 × 100) = 0.0003 BTC; If trader A is the maker when order filled, so the Trading fee = Min(0.02% × 0.01 × 1 × 100, 7% × 0.05 × 0.01 × 1 × 100) = 0.0002 BTC.

Following a comprehensive review by our Global Fee Team, XAUT-USDT will be reclassified into Spot Group 1. This change is designed to deliver better value across our VIP tiers.What's changing For VIP Level 1–6 members, the reclassification does not affect your trading fees on XAUT-USDT. For VIP Level 7–9 members, taker fees will decrease, though market rebates for this pair will be adjusted accordingly. No action is needed.

Price limit rules: During Pre-open session and continuous trading, index-based limit rules will be applied.Index-based limit calculation rules: Phase Maximum bid price Minimum ask price During Pre-Open session Index × (1 + J) Index × (1 – J) Within the 10 minutes of continuous trading Index × (1 + X) Index × (1 – X) After the first 10 minutes of continuous trading Min[Max(Index, Index (1 + Y) + Avg premium in the last 2 mins), Index × (1 + Z)] Max[Min(Index, Index × (1 – Y) + Avg premium in the last

Market1: $80,000 USDT (Up / Down) Market2: $90,000 USDT (Up / Down) Market3: $100,000 USDT (Up / Down) Elements Underlying: Index specified by the contract (e.g., BTC/USDT Index Price) Trading Currency: USDT Contract Direction: Up (predicting the event will occur) / Down (predicting the event will not occur) Share Face Value: 1 USDT / share Quote Unit: USDT price per share Tick Size: 0.01 USDT Price Range: 0.01 USDT – 0.99 USDT Trading Hours: 24/7 Margin Mode: Full Margin Settlement Data Source:

Spot market opening risk control rules Price limit rules: During the pre-open session and continuous trading, index-based limit rules will be applied.Index-based limit calculation rules: Phase Maximum bid price Minimum ask price During Pre-Open session Index × (1 + J) Index × (1 – J) Within the 10 minutes of continuous trading Index × (1 + X) Index × (1 – X) After the first 10 minutes of continuous trading Min[Max(Index, Index (1 + Y) + Avg premium in the last 2 mins), Index × (1 + Z)] Max[Min(Index

Yes, you can withdraw your balance in your preferred stablecoin (USD, USDC, or others as and when applicable) as per usual platform withdrawal options.7. How can I get started with the Unified USD Orderbook?

OKX team September 1, 2025

For example, if you make a transaction at 7:00 am UTC July 4, 2024, the verification period will be extended to 7:00 am UTC August 3, 2024.How does this impact my existing verified addresses? All existing verified addresses in our withdrawal address book will be placed on a 30-day verification period now.

Price limit rules: During Pre-open session and continuous trading, index-based limit rules will be applied.Index-based limit calculation rules: Phase Maximum bid price Minimum ask price During Pre-Open session Index × (1 + J) Index × (1 – J) Within the 10 minutes of continuous trading Index × (1 + X) Index × (1 – X) After the first 10 minutes of continuous trading Min[Max(Index, Index (1 + Y) + Avg premium in the last 2 mins), Index × (1 + Z)] Max[Min(Index, Index × (1 – Y) + Avg premium in the last

Please take note of the following details:Listing timeline ALLO deposits will open at 7:30 am UTC on Nov 11, 2025. ALLO call auction will take place from 12:00 pm to 1:00 pm UTC on Nov 11, 2025. ALLO/USDT spot trading will open at 1:00 pm UTC on Nov 11, 2025. ALLO withdrawals will open at 4:00 pm UTC on Nov 11, 2025.

10 minutes of listing Min[Max(Index, Index (1 + Y) + Avg premium in the last 2 mins), Index × (1 + Z)] Max[Min(Index, Index × (1 – Y) + Avg premium in the last 2 mins), Index × (1 – Z)] OKX may adjust the parameters N, H, X, Y, Z or switch limit price calculation methods based on market conditions without prior notice.