Is a virtual assistant on WhatsApp worth it? (2026)
Yes, it is worth it when your business gets repeated questions all day and loses sales by being slow to reply. It is not worth it when the volume is low or customer service requires case-by-case negotiation.
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 database, aggregated numbers only, no conversation read by a person; no imported history, no test contacts and without CertuAI's own sales chats. July 30 to September 30, 2026, measured on Oct 9, 2026. Method and table by line of business 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
Bernardo Villela · CEO, CertuAI
Want to see this working on your business's WhatsApp? Build your agent, no sign-up needed.
Summary in 7 facts
- Yes, it is worth it when your business gets repeated questions all day and loses sales by being slow to reply.
- It is not worth it when the volume is low or customer service requires case-by-case negotiation.
- Want to see this working on your business's WhatsApp?
- It answers the questions that repeat every day: opening hours, price, whether you carry a given product, how delivery works, what the address is.
- The customer sends the question and gets an answer right away, in the middle of the night or on Saturday.
- The AI keeps answering once you subscribe to a paid plan, from US$ 75 per month.
By the numbers
| Number | What it means |
|---|---|
| The AI keeps answering once you subscribe to a paid plan, from US$ 75 per month. | |
| US$ 75 per month | The Start plan costs US$ 75 per month, answers up to 1,600 messages and includes 5 team members. |
| US$ 120 per month | If the volume grows, Pro costs US$ 120 per month and Max costs US$ 249 per month. |
| 1,600 messages | Start costs US$ 75 per month and answers up to 1,600 messages, with 5 team members and no minimum contract term. |
| 2 times | The customer notebook fills itself in with every conversation, and the AI gets back in touch with people who went quiet up to 2 times, every 24 hours. |
What does the virtual assistant do day to day in your business?
It answers the questions that repeat every day: opening hours, price, whether you carry a given product, how delivery works, what the address is. The customer sends the question and gets an answer right away, in the middle of the night or on Saturday.
When a customer disappears in the middle of a conversation, the assistant gets back in touch on its own, with no one on the team having to remember. Each message becomes an organized contact, with a history of what has already been said.
What it does not do: decide on a discount outside the rules, resolve a serious complaint, or make a decision that depends on judging the case. That still needs a person.
The real math: what it costs and how much it answers
The assistant answers on WhatsApp, with the customer notebook working alongside it. It keeps answering once you subscribe to a paid plan, from US$ 75 per month.
The Start plan costs US$ 75 per month, answers up to 1,600 messages and includes 5 team members. If the volume grows, Pro costs US$ 120 per month and Max costs US$ 249 per month.
There is no setup fee and no minimum contract term. The number that matters when deciding is how many messages your business gets per month, not the price on its own.
To see what the AI would cost in your business, see how much it costs to put AI in place.
When is it worth it and when is it not?
The deciding rule is simple: if most conversations are repeated questions, it is worth it. If most require negotiating a price, evaluating case by case or calming an unhappy customer, the gain is smaller.
An example that changes the answer: a clinic that only confirms appointments and sends its address gains a lot from a virtual assistant. A law firm, where every case is different, uses the AI only for initial triage, not for all customer service.
Another point that weighs in: if your business gets few messages per month, the return takes a while to show up. Low volume does not justify switching tools right now.
How CertuAI can help
With CertuAI, you connect the WhatsApp number your business already uses. Start costs US$ 75 per month and answers up to 1,600 messages, with 5 team members and no minimum contract term.
The customer notebook fills itself in with every conversation, and the AI gets back in touch with people who went quiet up to 2 times, every 24 hours.
Read also
- 24-hour customer service without hiring more people
- what the AI agent can never answer
- how many conversations per month justify hiring an AI
Frequently asked questions
- Does a virtual assistant on WhatsApp completely replace human customer service?
- No. It handles the repeated questions and organizes the contact, but negotiation decisions or serious complaints still need a person.
- Do I need to change my WhatsApp number to use a virtual assistant?
- No, you connect the number your business already uses.
Keep reading
In short
Yes, it is worth it when your business gets repeated questions all day and loses sales by being slow to reply. It is not worth it when the volume is low or customer service requires case-by-case negotiation.
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
