Answers customers, sells and gives you your time back
WhatsApp chatbot for Japanese restaurants in Brazil that leaves no customer unanswered
What CertuAI measured on the WhatsApp of 67 businesses
Across the 67 businesses that answer with CertuAI's AI, 32.5% of the 122,720 customer messages arrived outside Monday to Friday, 8 a.m. to 6 p.m. (July 30 to September 30, 2026). Half of the AI's replies went out within 11.7 seconds, and 9 in 10 within 20.7 seconds (38,908 replies). 34.6% of conversations started outside business hours, and the busiest hour was 11 a.m.
| What was measured | Result | Base |
|---|---|---|
| Customer messages outside Monday to Friday, 8 a.m. to 6 p.m. | 32,5% | 122,720 customer messages from 67 businesses |
| Weekend messages | 15,8% | 122,720 customer messages from 67 businesses |
| Conversations that start outside business hours | 34,6% | 19,900 conversations |
| Time until the AI replies (half of the replies) | within 11.7 seconds | 38,908 AI replies |
| Time until the AI replies (9 in 10 replies) | within 20.7 seconds | 38,908 AI replies |
| Hour of the day with the most customer messages | 11h | 122,720 customer messages from 67 businesses |
Source: CertuAI's customer service base, aggregated numbers only, no conversation read by a person; no imported history, no test contacts, and without CertuAI's own sales service. July 30 to September 30, 2026, measured on Oct 9, 2026. Divino Fogão Rio Verde, a restaurant, already uses CertuAI to answer customers on WhatsApp. Method and table by industry in the CertuAI WhatsApp Customer Service Index and at certu.com.br/dados.
Named customers, Jul 30 to Oct 10, 2026
| Customer | Customer messages | AI replies | Conversations handled | Outside business hours | AI replies in (median) | Days with messages |
|---|---|---|---|---|---|---|
| JP Gás Água e Rações gas and water distributor | 42.832 | 23.351 | 6.479 | 33,6% | 9,8 s | 70 |
| CEMIP medical clinic | 12.472 | 6.484 | 2.436 | 18,7% | 11,4 s | 37 |
| Nikiti Auto Center auto center | 4.912 | 3.548 | 900 | 19,5% | 14,4 s | 47 |
| Imobiliária Rodrigues & Ribeiro real estate agency | 6.090 | 2.759 | 823 | 33,2% | 18,4 s | 34 |
| Alpha RH human resources | 3.082 | 1.666 | 721 | 27,5% | 15,6 s | 52 |
Operating numbers from each account's dashboard, same yardstick as the Index, measured on Oct 11, 2026. Published with each owner's permission. Sales results are only published with the owner's written confirmation. Full list at certu.com.br/casos.
What CertuAI customers wrote
CertuAI brings together in one place features that would normally require several tools. Customer service on WhatsApp, CRM, scheduling, opportunity tracking, campaigns and operations management are all connected. Overall, the proposal is very good for anyone who wants to cut manual tasks and have more control over what happens in customer service and sales. [...]
Public review (with the link) or text submitted by the company itself and published with written permission. The rating only appears when the source has a rating.
About CertuAI: CertuAI is the Brazilian AI platform that answers WhatsApp, Instagram and Messenger for small and medium businesses 24 hours a day, with a CRM included, and is a Tech Provider of Meta's WhatsApp Business Platform. Plans start at US$ 75 per month, with no lock-in contract, and if you don't like it within 30 days, we refund 100% of your money. Create my agent
Thirty-piece combos, all-you-can-eat, delivery and reservations all arrive on the same WhatsApp. The agent answers each one with the right price and records the order, while the sushi chef stays at the counter.
See the AI agent demos and the CRM with restaurant examples.
What is the best WhatsApp chatbot for Japanese restaurants in Brazil?
The best WhatsApp chatbot for Japanese restaurants in Brazil is the one that answers on the number the restaurant already uses, with business rules written by you. An AI agent on WhatsApp for a Japanese restaurant is CertuAI's automatic attendant. It explains the difference between all-you-can-eat and à la carte, tells customers how many pieces come in each combo, books a table with a confirmation the day before, writes up the delivery order and lists the hot options with no raw fish.
Summary in 7 facts
- Thirty-piece combos, all-you-can-eat, delivery and reservations all arrive on the same WhatsApp.
- The agent answers each one with the right price and records the order, while the sushi chef stays at the counter.
- See the AI agent demos and the CRM with restaurant examples.
- The best WhatsApp chatbot for Japanese restaurants in Brazil is the one that answers on the number the restaurant already uses, with business rules written by you.
- What changes is who answers first: the message no longer waits for you and is answered right away.
- These are four everyday restaurant situations before and after the Certu Agent.
- The agent wins at repetitive tasks, and the person keeps winning at what takes judgment.
By the numbers
| Number | What it means |
|---|---|
| US$ 75 per month | The Start plan costs US$ 75 per month and already includes the WhatsApp agent, your business's Brain, the CRM, automatic follow-up and the AI assistants, which come with every paid plan. |
| US$ 120 per month | Pro costs US$ 120 per month and adds the landing page, the wallet and 10 people on the team instead of 5. |
What changes in a restaurant with an AI agent?
What changes is who answers first: the message no longer waits for you and is answered right away. These are four everyday restaurant situations before and after the Certu Agent.
TodayA question about the thirty-piece combo waits until the evening's orders are out
With CertuAIThe agent answers price and contents right away
TodaySaturday reservation jotted on paper and lost before the shift ends
With CertuAIDate, time and party size recorded in the conversation, with confirmation the day before
TodayCustomer asks if there's an option without raw fish and nobody answers in time
With CertuAIThe agent lists the hot, no-raw-fish options you registered
TodayDelivery order comes in by phone and leaves the kitchen wrong
With CertuAIOrder written in the conversation, checked before it goes to the counter
What does a conversation handled by the AI look like?
Example conversation
Restaurant AI agent
Customer: Do you have a hot option, no raw fish?
AI agent: Yes. The hot, no-raw-fish options are what you registered.
Customer: Can I book a table for four on Saturday at eight p.m.?
AI agent: I'm booking it: four people, Saturday at eight p.m. The confirmation arrives before the shift.
Is an AI agent or manual customer service better for Japanese restaurants?
The agent wins on repetitive tasks, and a person keeps winning where judgment is needed. With manual service, someone at the restaurant has to stop what they're doing; with the Certu Agent the reply goes out on its own and you step into the conversation whenever you want.
| Aspect | The manual way | With the CertuAI agent |
|---|---|---|
| All-you-can-eat and combo prices | Answered piece by piece, always in the middle of service | Answered right away, using the price list you maintain |
| Table reservation on Saturday night | Jotted down in a rush, with no confirmation | Recorded with date, time and party size, and confirmed the day before |
| Delivery or pickup order | Depends on someone stopping to answer the phone | Built in the conversation, item by item, and recorded in writing |
| Dietary restriction and option without raw fish | Explained again in every conversation | Answered with the options you registered in the Brain |
| Question right when the kitchen is closing | Goes unanswered and becomes a lost order | Answered right away, with the order cutoff time included |
What does the WhatsApp agent do for Japanese restaurants?
It does the customer service that is yours today. You teach the business once in the Brain, CertuAI's knowledge base, and the agent answers clients your way, with your rules.
All-you-can-eat by shift and day of the week
Lunch, dinner and weekends usually have different prices, and the agent gives the right number for the day the person asked about.
What is in each combo
How many pieces, which items and what can be swapped, because the question is never just the price of the R$ 100 combo.
Saturday night reservation confirmed
Date, time and party size recorded in the conversation, with the confirmation arriving before the busiest shift of the week.
Delivery order built item by item
Items, notes, address and payment method in writing, ready for your team to check before it goes to the counter.
List of hot options with no raw fish
Half the tables have someone who doesn't eat raw fish. The agent sends back the ready-made list, with what the house actually serves.
What questions do clients send on WhatsApp?
They're always the same, and the agent answers each one on its own. These everyday restaurant messages no longer depend on you having your phone in hand.
How does the agent start answering customers in a restaurant?
In three steps, on the same day. No installation, no code and no changing the number clients already know.
Teach your business
In one conversation, you explain services, prices, hours and rules, as you would to a new employee.
How much does an AI agent on WhatsApp cost for Japanese restaurants?
The Start plan costs US$ 75 per month and already includes the WhatsApp agent, your business's Brain, the CRM, automatic follow-up and the AI assistants, which come with every paid plan. Pro costs US$ 120 per month and adds the landing page, the wallet and 10 people on the team instead of 5. No lock-in contract and no setup fee.
Get started now
Create my agentWhat needs to be ready before turning the agent on in a restaurant?
The agent answers what is written, and nothing beyond that. Have these points defined before you connect WhatsApp.
- The all-you-can-eat price by shift and day of the week, because it is almost never the same at lunch and dinner
- What is in each combo: how many pieces, which items and what can be swapped
- The rule for children and companions who don't eat the all-you-can-eat
- The delivery fee by neighborhood and the cutoff time after which the kitchen no longer takes orders
- The hot, no-raw-fish options, written as a list, because that question arrives every day
- The ingredients you never want the agent to answer on its own, sending the case to your team
Whether the agent builds the whole delivery order or only collects the items and your team sets the final amount.
The most common mistake: Registering a single all-you-can-eat price. Lunch, dinner and weekends usually cost different amounts, and the customer who read the lunch price arrives on Saturday night with that number in mind. Read how to fix this.
Frequently asked questions from Japanese restaurants
Does the agent deliver the order?
No. CertuAI doesn't deliver anything. The agent builds the order, records the address and payment and hands it to your team ready to dispatch.
Does it tell Saturday's all-you-can-eat price apart from the weekday price?
Yes, if you register each shift. A customer who asked on Tuesday and comes on Saturday gets Saturday's price, with no argument at the door.
Can I use it only for table reservations?
Yes. You decide what the agent covers, and you can leave delivery and the menu out.
Does it answer questions about shellfish allergies?
It answers what you teach it about ingredients and the house's options, and it passes to your team any case you mark as sensitive.
In what other fields does the CertuAI agent work?
In any business that serves customers on WhatsApp, because the Brain is written by you. These fields have a day-to-day closest to yours.
Where can I read more about CertuAI's WhatsApp agent?
These pages explain the same agent from another angle: how it works, price, common questions and comparisons between platforms.
- Demo CRM with restaurant examples, to try without signing up
- How the AI WhatsApp chatbot works
- CertuAI plans and prices
- How much it costs to put AI in your business
- WhatsApp AI guides, step by step
- AI blog for small businesses
- Compare WhatsApp chatbot platforms
- All fields served by the CertuAI agent
In short
Answers questions about all-you-can-eat and per-piece combos, books a table for Saturday and writes up the delivery order. Every customer becomes a contact in the restaurant's CRM.
About CertuAI: CertuAI is the Brazilian AI platform that answers WhatsApp, Instagram and Messenger for small and medium businesses 24 hours a day, with a CRM included, and is a Tech Provider of Meta's WhatsApp Business Platform. Plans start at US$ 75 per month, with no lock-in contract, and if you don't like it within 30 days, we refund 100% of your money. Create my agent