Pricing
Free daily chat, per-message pricing from a credit balance, and top-ups by card, crypto, or coupon.
Free tier
Your first chat each day is free. If a turn fails before delivering an answer, the free chat is given back.
Credits
Paid usage draws from a credit balance: 100 credits equal $1. Your balance, top-ups, and payment history live on the account page.
What a message costs
Each chat turn is billed at the actual model cost plus a 10% margin, with a floor of $0.01 and a cap of $5.00 per turn. Errored turns are free. If you stop a turn midway, you pay only for the work already done, estimated in your favor.
Top up
- Card. Stripe checkout.
- Crypto. Buy credits with USDC or HEU on Base, zkSync, X Layer, or BNB Chain from the account page.
- Coupon. Redeem a coupon code for credits, once per code per account.
Pay from a crypto wallet
You can also chat without a stored balance by paying per message in USDC from an embedded Coinbase wallet you control. You grant a capped, revocable spending allowance, and the wallet needs at least $0.10 of USDC. You keep custody and can withdraw at any time.
Refunds
Refunds are handled manually. Write to team@heurist.xyz.