Teresina, PI
WhatsApp chatbot for businesses in Teresina, PI
Quick answer
How does a WhatsApp chatbot work for businesses in Teresina?
CertuAI builds an artificial intelligence agent that answers on the WhatsApp number your business already uses, with area code 86 or any other. It answers prices, hours and questions using your business's information, books appointments and logs every contact in the CRM. Everything is done online, with no visit, and it starts at US$ 75 per month.
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
Teresina has 23,404 establishments, according to IBGE, Brazil's statistics institute. Anyone who messages your WhatsApp has another option one message away. CertuAI puts an AI agent on the number you already use: it answers right away with your price and your hours, books the customer and saves every conversation in the CRM.
Build my agentNo lock-in contract and no setup fee. You connect the number you already use.
Summary in 7 facts
- Teresina has 23,404 establishments, according to IBGE, Brazil's statistics institute.
- Anyone who messages your WhatsApp has another option one message away.
- CertuAI puts an AI agent on the number you already use: it answers right away with your price and your hours, books the customer and keeps every conversation in the CRM.
- CertuAI builds an artificial intelligence agent that answers on the WhatsApp number your business already uses, with area code 86 or any other.
- Among 23,404 businesses in Teresina, what separates those who close the sale from those who don't is the time to first response.
- 01 Answers the customer Price, lead time and hours, right away, with what you set up.
- Three steps in the browser, no visit and no installation.
By the numbers
| Number | What it means |
|---|---|
| US$ 75 per month | Everything is done online, with no visit, and costs from US$ 75 per month. |
| 23,404 businesses | Among 23,404 businesses in Teresina, what separates those who close the sale from those who don't is the time to first response. |
| 37 people | Teresina has 23,404 establishments and 866,300 residents: one for every 37 people, the 15th highest concentration among the 20 cities with their own page here. |
| 10,000 | The last column shows how many there are for every 10,000 residents, which is the number that lets you compare one city with another. |
| 5 people | Start includes 5 people, Pro 10 and Max 25. |
What the chatbot does
Among 23,404 businesses in Teresina, what separates those who close the sale from those who don't is the time to first response.
Answers the customer
Price, lead time and hours, right away, with what you set up. It works at eleven at night, on Sunday and on holidays.
Books the appointment
After answering, it books the time without you joining the conversation.
What goes beyond what you taught stays with you
The conversation reaches you with a summary, instead of the AI risking a guess.
Made for Teresina
23,404 businesses in Teresina, one for every 37 residents. The agent answers with your price, your hours and the local holidays, such as Corpus Christi.
How to put the agent on the business's WhatsApp
Three steps in the browser, with no visit and no installation. You do it yourself, in Teresina, whenever you have time.
Teach it what customers ask
Price, lead time and hours: you write them once in the Brain and the agent starts answering that way, always the same.
Connect the number with area code 86
The same one the customer already has saved. It connects by QR code or through Meta's official sign-up flow, and it stays yours.
Enter your hours and holidays in Teresina
Including Corpus Christi: on those days the agent lets anyone who writes in know, instead of booking what no one will be there to handle.
A business's WhatsApp in Teresina, before and after
Among 23,404 businesses in Teresina, whoever answers first usually gets the customer.
| Day to day | How it is today | With CertuAI |
|---|---|---|
| The customer writes at eleven at night | Waits until tomorrow | Answered right away |
| Asks about price, lead time and hours | Someone stops what they're doing | The agent answers what you taught it |
| Three people at the same time | Two wait | All three are served |
| Wants to close | Depends on someone being free | Books the appointment |
| Holiday in Teresina (Corpus Christi) | Nobody lets them know | The agent answers with your hours |
| What goes beyond what you taught | Gets lost among the messages | Goes to you with a summary |
Swipe the table sideways to see all the columns.
Why this changes things in Teresina
In competition like this, the customer rarely waits: they write to two or three and close with whoever replied with the right price and hours.
The agent is built and adjusted online, and the price in Teresina is the same as in the rest of Brazil. See the AI WhatsApp chatbot up close or compare plans.
Businesses in Teresina
Teresina has 23,404 establishments and 866,300 residents: one for every 37 people, the 15th highest concentration among the 20 cities with their own page here.
People looking for a business in Teresina message two or three in the same minute. What decides is not who has the best ad, but who replies with price, lead time and hours before the others.
| Teresina (PI) | Number | Source |
|---|---|---|
| Establishments | 23.404 | IBGE, Central Register of Enterprises, 2021 |
| Residents per establishment | 37 | IBGE, Central Register of Enterprises, 2021 and 2022 Census |
| Residents | 866.300 | IBGE, 2022 Census |
Swipe the table sideways to see all the columns.
Holidays in Teresina
Besides the national holidays, businesses in Teresina close on these days:
• Corpus Christi
• August 16, Teresina anniversary
• October 19, Piauí Day (state holiday)
• December 8, Our Lady of the Conception
You write this once in the Brain and the agent stops offering times that nobody will staff. It also works for recesses, collective vacations and the day the business opens later.
Industries with the most businesses in Teresina
IBGE (Brazil's statistics institute) counts 18 industries that serve the public in Teresina separately. In 2021, the three with the most establishments were doctors' and dentists' offices and clinics (1,404), restaurants and other food services (1,085) and clothing and accessories stores (707). The last column shows how many exist per 10,000 residents, which is the number that lets you compare one city with another.
| Industry in Teresina | Establishments | Per 10,000 residents |
|---|---|---|
| Doctors' and dentists' practices and clinics | 1.404 | 16,2 |
| Restaurants and other food services | 1.085 | 12,5 |
| Clothing and accessories stores | 707 | 8,2 |
| Pharmacies | 511 | 5,9 |
| Psychologists, physical therapists, nutritionists and other health professionals | 406 | 4,7 |
| Vehicle repair shops | 395 | 4,6 |
| Law firms | 342 | 3,9 |
| Accounting firms | 307 | 3,5 |
| Hairdressers and beauty salons | 254 | 2,9 |
| Preschools, elementary and high schools | 223 | 2,6 |
| Diagnostics and therapy | 217 | 2,5 |
| Bakeries with their own production | 213 | 2,5 |
| Real estate agencies | 160 | 1,8 |
| Gyms | 151 | 1,7 |
| Veterinary clinics | 36 | 0,4 |
| Language schools | 18 | 0,2 |
| Sports instruction | 10 | 0,1 |
| Arts and culture education | 5 | 0,1 |
Swipe the table sideways to see all the columns.
Source: IBGE, Central Register of Enterprises by activity, 2021, and 2022 Census.
Frequently asked questions
Do I need an office in Teresina to use it?
No. CertuAI is based in Florianópolis and everything happens online. You build the agent in the browser and connect your number; nobody needs to come to you.
Does it work with an area code 86 number?
It works with the number you already use, from any area code. You connect by QR code or through Meta's official sign-up flow, and the number stays yours.
Is the price different in Teresina?
No. The Start plan costs US$ 75 per month in any city, with the agent, the Brain, the CRM and automatic follow-up for people who went quiet. There is no lock-in contract or setup fee.
What happens when the agent doesn't know the answer?
It doesn't make things up. It tells the customer that a person will get back to them and sends you the conversation summary right away. You join the same conversation and the customer doesn't have to repeat anything.
Does it work alongside my team?
Yes. The agent handles the first contact and passes the conversation to the right person. Start includes 5 people, Pro 10 and Max 25.
Is the price different in Teresina?
No. It is the same as in the rest of Brazil, with no big-city price list, no lock-in contract and no setup fee. What changes in Teresina is what you teach the agent: the neighborhoods you serve, your hours and holidays such as Corpus Christi.
Does CertuAI serve businesses outside Teresina?
It serves all of Brazil, online. This page exists because Teresina has 23,404 businesses, the 15th highest concentration among the 20 cities with their own page, and what changes from city to city is the hours, the holidays and the competition, never the product.
By type of business
The agent is the same; what it knows changes with your industry. See how it works in each one:
Your WhatsApp answering in Teresina
Teach the agent your business, connect your number with area code 86 and watch it answer before you choose a plan.
From US$ 75 per month, the same price as all of Brazil.
Build my agentIn short
How does a WhatsApp chatbot work for businesses in Teresina? CertuAI builds an artificial intelligence agent that answers on the WhatsApp number your business already uses, with area code 86 or any other. It answers prices, hours and questions using your business's information, books appointments and logs every contact in the CRM. Everything is done online, with no visit, and it starts at US$ 75 per month.
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