DEX
The order-book exchange for AI credit. Buy bInference credit from other people, or sell yours before it ends.
The bInference DEX is the order-book exchange for AI credit. People buy and sell bInference credit with each other in USDT on BNB Chain, and bInference sells fresh credit beside them.
- Every order is backed 1:1: credit locked, USDT in your own wallet.
- We never hold your coins. They stay in your own DEX wallet until a trade settles.
- Settled on BNB Chain, within seconds of each match.
Markets
Credit comes in daily batches, and each batch ends at 00:00 UTC on its own day (see Credit and expiry). On the DEX each end day is its own market: binference-2026-10-24 is credit that ends on 24 October at 00:00 UTC. Credit you buy keeps its end day, so no trade resets its clock.
- A new market opens every day at 00:00 UTC for the credit that comes in that day.
- Each market closes 60 minutes before its credit ends. Seven or eight markets are open at once.
- Credit that ends sooner costs less. The AI Curve shows it: the best price of every market by the time its credit has left.
- Credit you buy is spent like any other. Whatever ends first is spent first.
Fresh credit
In the newest market bInference always sells fresh credit at 1.000 USDT per $1, with no fee. Cheaper sell orders from other people in that market fill first.
What you can sell
Only bought credit sells. Nothing else does: not your plan, the welcome gift, free or everyday chat, private AI, promo credit, credit given by hand or an agent's AI budget from its token's fees.
The DEX wallet
Each account that trades gets its own DEX wallet, made the first time you open the DEX. It's yours: its USDT moves only for an order or a withdrawal the wallet itself signed.
- It holds USDT on BNB Smart Chain (BEP-20). Your USDT stays in it until a trade settles, and sellers are paid into it.
- Deposit by sending USDT on BNB Smart Chain to its address, from an exchange or another wallet. A deposit counts once BNB Chain finalizes it.
- Send only USDT on BNB Smart Chain. USDT sent on any other network is lost.
- Approve once before your first buy or withdrawal. The approval lets the DEX's contract carry out the payments and withdrawals your wallet signs.
- Selling needs no approval and no BNB. Taking the USDT out does need the one approval; see network fees.
- Withdraw to any address, at any time. See Network fees.
- Leave whenever you like, with or without us. See your way out.
Your way out
The DEX wallet is yours, so you can leave without bInference's help. On the DEX wallet page, under Your way out:
- Export the private key. Privy shows it in its own window, and with it any wallet app opens the DEX wallet. Anyone with the key controls the wallet, so keep it safe.
- Send BNB from the DEX wallet to any address. It pays its own network fee in BNB.
- Cancel on chain. One transaction on the DEX's contract voids every order the wallet has signed so far, so no one can pay from them, bInference included. Your open orders on the DEX end too. It needs a little BNB in the wallet, far less than 0.0001 BNB at today's prices.
If our site is ever unavailable, the exported key is all you need. In any wallet app, send the USDT wherever you like, call cancelAll on the DEX's contract (the one your wallet approved; BscScan lists it with the wallet's token approvals), or revoke that approval, after which nothing can be paid from the wallet at all.
Orders
| Order | What it does |
|---|---|
| Limit | Fills at your price or better. Good till close (GTC) leaves the rest in the book until the market closes, immediate or cancel (IOC) cancels the rest at once and fill or kill (FOK) fills all of it at once or nothing. |
| Market | Fills at once, at most 5% from the best price when you place it. The rest cancels. |
| Post only | A limit order that only waits in the book. It's refused if any part would fill at once. |
- Signed in your DEX wallet: free and instant, with no prompt.
- Cancel any time on the DEX page.
- What an order gives back when it ends: a sell order's credit unlocks, and a buy order's USDT simply stays in your wallet.
- Your own orders never trade with each other. When a new order would meet one of yours, your waiting order is cancelled.
Rules
| Rule | In beta |
|---|---|
| Prices | Steps of 0.001 USDT per $1 |
| Sizes | Steps of $0.01 of credit |
| Smallest order | $1.00 of credit and 1 USDT in value |
| Largest order | $500 of credit |
| Traded a day | $2,000 per account a UTC day, buys and sells together |
| Open orders | 100 per account |
| Price band | Within 20% of the market's reference price, never fewer than 3 price steps |
The reference price is the volume-weighted price of the last 15 minutes' trades. With no trade in that time, it's the last trade's price moved along the AI Curve for the time since. bInference's fresh offer sits outside the band.
Fees
- Maker 0%, taker 1%. The maker's order was waiting in the book; the taker's order filled against it. A buyer pays the fee on top of the price, a seller from what they're paid.
- Fresh credit pays no fee.
- $BINF holders pay less. Your lowest $BINF balance over the last 7 days, held plus staked, takes a share off the taker fee:
| Lowest $BINF balance (7 days) | 5M | 6M | 7M | 8M | 9M | 10M | 12.5M | 15M |
|---|---|---|---|---|---|---|---|---|
| Off the fee | 10% | 15% | 20% | 25% | 30% | 35% | 45% | 50% |
At 15M, the taker fee is 0.5%.
How a trade settles
Payment against delivery, in three steps:
Matched. Your order meets another in the book. The seller's credit stays locked.
Paid on BNB Chain, within seconds. The buyer's USDT moves to the seller only against the buyer's own signed order.
Credited once the payment is final, 1 to 2 seconds later. The buyer can spend the credit at once.
If a payment fails, the match is undone.
Network fees
- Trades: bInference pays every trade's network fee, out of the fee it charges.
- The one approval: a wallet with BNB pays for its own. A wallet without BNB gets the BNB for it from bInference, once per account, while it holds 1 USDT or more. That is paid back once, as a setup fee of at most 1 USDT, on the wallet's first buy or withdrawal.
- USDT withdrawals need no BNB. You sign the withdrawal, and the network fee comes out of the amount: at least 0.01 USDT, shown before you sign. The smallest withdrawal is 1 USDT.
- A withdrawal can end buy orders. If it needs USDT your buy orders hold, those orders end first, newest first.
The last hour
A market closes 60 minutes before its credit ends, and nothing trades in it after that:
- Open sell orders end, and their credit unlocks, so you can still spend it.
- Buy orders end, and their USDT simply stays in your wallet.
Good to know
- Market data is public. Read markets, order books, trades and candles with the DEX API, no key needed. Wallets and accounts never appear.
- Matching can pause. While it does, payments for earlier matches, cancels and withdrawals keep working.