ChatGas vs wChat vs CertuAI (2026): honest comparison
ChatGas is for those who resell only gas and water and answer alone, with products and neighborhoods already set up. wChat is for a large distributor, with 5 to 10 agents on the team. CertuAI is for those who want the customer notebook to fill itself in, in any line of business.
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
- ChatGas is for those who resell only gas and water and answer alone, with products and neighborhoods already set up. wChat is for a large distributor, with 5 to 10 agents on the team.
- CertuAI is for those who want the customer notebook to fill itself in, in any line of business.
- Want to see this working on your business's WhatsApp?
- That is the Essencial plan, with the AI answering 24 hours, unlimited conversations, 1 connected number and 1 person on the dashboard.
- ChatGas was built only for gas and water resellers.
- Their team sets up the products, prices and neighborhoods served before turning on the AI.
- Chat with an AI agent in the simulator and see how it answers on WhatsApp.
By the numbers
| Number | What it means |
|---|---|
| 10 agents | ChatGas is for those who resell only gas and water and answer alone, with products and neighborhoods already set up. wChat is for a large distributor, with 5 to 10 agents on the team. |
| R$ 147 per month | ChatGas charges R$ 147 per month. |
| 24 hours | That is the Essencial plan, with the AI answering 24 hours, unlimited conversations, 1 connected number and 1 person on the dashboard. |
| 5 numbers | The middle plan adds Instagram, Facebook, more numbers and more people, and the larger plan goes up to 5 numbers. |
| R$ 997 per month | Checked on Sep 24, 2026. wChat charges R$ 997 per month. |
| US$ 75 per month | CertuAI's Start costs US$ 75 per month and answers up to 1,600 AI messages, with 5 people on the team. |
| US$ 120 per month | Pro costs US$ 120 per month and Max costs US$ 249 per month. |
| 1,600 messages | The Start plan costs US$ 75 per month, answers up to 1,600 AI messages and serves 5 team members. |
How much does each one cost in 2026?
ChatGas charges R$ 147 per month. That is the Essencial plan, with the AI answering 24 hours, unlimited conversations, 1 connected number and 1 person on the dashboard. The middle plan adds Instagram, Facebook, more numbers and more people, and the larger plan goes up to 5 numbers. Checked on Sep 24, 2026.
wChat charges R$ 997 per month. That is the Pro plan, with up to 10 agents and the AI chatbot. The entry plan has only a flow-based chatbot, with no AI, and the larger plan is by quote. Checked on Sep 24, 2026.
CertuAI's Start costs US$ 75 per month and answers up to 1,600 AI messages, with 5 people on the team. Pro costs US$ 120 per month and Max costs US$ 249 per month.
What does each one do under the hood?
ChatGas was built only for gas and water resellers. Their team sets up the products, prices and neighborhoods served before turning on the AI. The agent confirms neighborhood, address and payment method, and leaves the order ready for the delivery driver. It becomes a drag as the reseller grows, because the entry plan has only one person on the dashboard.
wChat is a customer service system for large teams, with a conversation board and queues between agents. The AI learns from the answers the agents themselves give, understands audio and reads images. Whoever buys it has to build the flow and train the team on the board. It weighs on the price for those who answer alone or as a pair, and it was not designed for gas and water.
CertuAI connects to the WhatsApp number the business already uses, with no need to change numbers. Each conversation becomes a contact, a deal and a task on its own in the customer notebook. The AI gets back in touch with people who went quiet up to two times, every 24 hours, from day one. Whoever uses it has to teach it the price list for gas, water jugs and neighborhoods, because CertuAI is not built only for that line of business.
Comparison table
| Criterion | ChatGas | wChat | CertuAI |
|---|---|---|---|
| Price of the plan with AI | R$ 147/month (Essencial) | R$ 997/month (Pro) | US$ 75/month (Start) |
| AI answers per month | not published (says unlimited) | not published | up to 1,600 |
| People on the plan | 1 | 10 | 5 |
| Follows up with people who went quiet | not published | not published | up to 2 times, every 24h |
| Customer notebook fills itself in | not published | not published | yes |
| Minimum contract term | no lock-in | not published | no lock-in |
Want to see how it works in practice? Chat with an AI agent in the simulator and see how it answers on WhatsApp.
Which one to choose by usage profile?
Whoever resells only gas and water, and answers alone or with one other person, saves time with ChatGas, because their team already sets up neighborhoods and product prices.
A distributor with 5 to 10 agents, who needs a queue and a conversation board shared across the team, finds that size ready-made in wChat, even without a focus on this line of business.
Whoever wants the AI filling in the customer notebook on its own, regardless of the line of business and with no minimum contract term, finds that in CertuAI, as long as they teach it the price list for gas and water jugs.
How CertuAI can help
CertuAI connects to the WhatsApp number your distributor already uses, with no need to change numbers. The Start plan costs US$ 75 per month, answers up to 1,600 AI messages and serves 5 team members. There is no minimum contract term.
Read also
- is AI for gas and water worth it
- AI for distributors
- free trials on AI platforms
Frequently asked questions
- Does ChatGas serve only gas and water?
- Yes, the website says it is built only for that line of business, with their team setting up products, prices and neighborhoods.
- Is wChat right for a small distributor?
- The entry plan goes up to 5 agents without AI, but the plan with AI is the most expensive on this list for someone answering alone or as a pair.
- Does CertuAI get back in touch with people who went quiet?
- Yes, up to 2 times, every 24 hours, turned on from the start of the conversation.
Keep reading
In short
ChatGas is for those who resell only gas and water and answer alone, with products and neighborhoods already set up. wChat is for a large distributor, with 5 to 10 agents on the team. CertuAI is for those who want the customer notebook to fill itself in, in any line of business.
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
