Pay only for what you use, no monthly fee
Pay only for what you use — no monthly fee, no signup fee, no contract, and sign up today to get 10 THB in credit to try it out.
Try it out first, no card required
Sign up and get 10 THB in credit immediately — no card entry, no account linking of any kind.
10 THB is enough for about 90 replies on the fast, affordable model — enough to connect a channel, add your shop's info, and let the bot answer real questions from real customers before you decide whether to top up.
If it's not for you, just stop using it — nothing is locked in.
How many replies does each top-up amount get you
Wasu AI charges based on actual usage, not a monthly fee. Every time the AI replies to a customer, the system deducts credit based on how much data that reply actually used.
These numbers come from our own test set — 10 questions per model (measured 26 Sep 2026), taken as the median — the kind of questions customers actually ask, together with the shop info needed to answer them. This isn't usage statistics pooled from a large number of shops.
| Top-up | Fast, affordable model | Smarter model |
|---|---|---|
| 10 THB (free on signup) | about 90 replies | about 20 replies |
| 100 THB | about 900 replies | about 220 replies |
| 300 THB | about 2,800 replies | about 680 replies |
| 500 THB | about 4,700 replies | about 1,100 replies |
These are estimates. Short questions cost less; questions that need to pull in a lot of shop info cost more — the system shows you exactly what every baht of credit went toward.
Pick an AI model that fits your budget
The fast, affordable model — great for the common questions: pricing, hours, how to order. Most shops do fine with just this one.
The smarter model — better at handling complex questions, suited to businesses whose customers ask long, multi-condition questions or need detailed explanations.
Switch anytime, with immediate effect. Most shops start with the affordable model, then switch if they find answers aren't detailed enough.
Always know how much you have left
The top worry with usage-based pricing is a bill that spirals out of control — we answer that with transparency, not a promise.
You top up first, and no invoice ever follows. You pay when you top up, not at the end of the month — we don't bill you retroactively.
When credit runs out, the bot stops replying to new messages. Customer messages still reach your inbox so you can reply yourself. Your balance may dip slightly below zero from replies already in progress, and the overage shows on the credit page — top up again whenever you're ready.
The credit page shows the details. See exactly what your credit went toward, which periods used the most, and — based on your shop's actual usage — roughly how many days your remaining credit will last.
How to top up
Top up by PromptPay right in the system — no bank transfer, no screenshotting a receipt for someone to verify. Credit is added automatically once payment goes through.
Choose one of three top-up packs — 100 / 300 / 500 THB — or enter your own amount, from 100 up to 100,000 THB.
Frequently asked questions
No — sign up and you'll get 10 THB in credit to try it out right away.
Neither. You can set everything up yourself in the system.
No — credit you've topped up stays in your shop's account and never expires.
There's no contract to cancel — if you don't top up, you're not charged.
The bot stops replying to new messages on every channel. Customer messages still reach your inbox so you can reply yourself. Your balance may dip slightly below zero from replies already in progress. Once you top up, the bot replies again. The overage shows up on the credit page.
Once per shop, when you open a new account.