Which one is better? ManyChat vs Dialogflow

By Joren Wouters • Updated on
While ManyChat is the most popular chatbot builder, Dialogflow is one of the most used platforms for its AI capabilities.
You can use both platforms to create your chatbot, but which platform should you use?
What are the differences between them? And which platform is better?
Let’s find out!
The used criteria
1. Interface
ManyChat
The ManyChat interface is one of the best interfaces I have ever seen in chatbot software. And this is because of the flexibility.
In ManyChat you can choose between two interfaces: The Basic builder (kind of like the “Block” structure in Chatfuel) and the Flow builder (which is a visual flow builder):
Moreover, you can test the chatbot in Facebook Messenger, before it actually goes live.
- Visual Flow Builder
Create chatbot dialogs with a visual flow builder.
- Test chatbot
Is it possible to test the chatbot before putting your new flows or changes live?
- Interface easy to use?
Is the chatbot platform easy-to-use?
- Easy to setup a chatbot?
Is it easy to set up your chatbot with this chatbot platform?
Dialogflow
Dialogflow has two types of editions: Dialogflow Essentials (ES) and a Dialogflow Customer Experience (CX).
Both types of editions come with different interfaces and can be used for different purposes:
Dialogflow ES is the standard edition of Dialogflow and most people are familiar with this one. Here, you can fill in several training phrases and create a response for these training phrases.
Dialogflow CX is a relatively new version of Dialogflow and is not yet used by many people.
In general, Dialogflow CX is not recommended for many use cases, unless you have a very sophisticated chatbot.
With both interfaces, you can test your chatbot in the interface itself.
- Visual Flow Builder
Create chatbot dialogs with a visual flow builder.
- Test chatbot
Is it possible to test the chatbot before putting your new flows or changes live?
- Interface easy to use?
Is the chatbot platform easy-to-use?
- Easy to setup a chatbot?
Is it easy to set up your chatbot with this chatbot platform?
No winner
Both chatbot builders check all the 4 criteria on this category, so no clear winner.
That being said, if you are a beginner with chatbots, I think the ManyChat interface is easier to start with, as the Dialogflow interface can be more complex (especially if you are using Dialogflow CX).
2. Chatbot Elements
ManyChat
ManyChat has all the chatbot elements you need in order to build a chatbot. The only thing that they don’t provide is Vertical Lists, which is logical, because Facebook Messenger doesn’t allow this anymore.
- Delays
Use delays between messages in your chatbot
- Images
Can you send images via your chatbot?
- Video
Can you send video via your chatbot?
- Audio
Can you send audio via your chatbot?
- Attachments
Can you send attachments via your chatbot?
- Gallery (Horizontal list)
Show a gallery of cards inside your chatbot. A card consists of an image, title, subtitle and button.
- Vertical list
Show a vertical list of items inside your chatbot
- Emojis
Can you use emojis inside your chatbot?
- Persistent Menu
Can you add a persistent menu to your chatbot?
- Quick Replies
Can you add quick replies to your chatbot where users can click on?
- Buttons
Can you add buttons to your chatbot where users can click on?
- Free text input
Can chatbot users freely type text to your chatbot whenever they want to?
- Location sharing
Can users share their location inside the chatbot?
- Email validation
When a chatbot user gives their email, can the platform validate it’s a correct email address?
- Phone number validation
When a chatbot user gives their phone number, can the platform validate it’s a correct phone number?
- Date validation
When a chatbot user gives a date, can the platform validate it’s a correct date?
Dialogflow
Dialogflow provides enough elements to build a good chatbot.
They also lack some important elements, such as Delays, Video and Attachments.
Also, some chatbot elements are not built-in, but you can code these yourself using the Custom Payload feature.
- Delays
Use delays between messages in your chatbot
- Images
Can you send images via your chatbot?
- Video
Can you send video via your chatbot?
- Audio
Can you send audio via your chatbot?
- Attachments
Can you send attachments via your chatbot?
- Gallery (Horizontal list)
Show a gallery of cards inside your chatbot. A card consists of an image, title, subtitle and button.
- Vertical list
Show a vertical list of items inside your chatbot
- Emojis
Can you use emojis inside your chatbot?
- Persistent Menu
Can you add a persistent menu to your chatbot?
- Quick Replies
Can you add quick replies to your chatbot where users can click on?
- Buttons
Can you add buttons to your chatbot where users can click on?
- Free text input
Can chatbot users freely type text to your chatbot whenever they want to?
- Location sharing
Can users share their location inside the chatbot?
- Email validation
When a chatbot user gives their email, can the platform validate it’s a correct email address?
- Phone number validation
When a chatbot user gives their phone number, can the platform validate it’s a correct phone number?
- Date validation
When a chatbot user gives a date, can the platform validate it’s a correct date?
The winner: ManyChat
This is a win for ManyChat.
ManyChat provides way more chatbot elements than Dialogflow and is therefore the winner in this category.
3. Users
ManyChat
With ManyChat you can add custom fields and tags to specific users. Based on those custom fields and tags, you can send messages to specific user segments.
In ManyChat you can view all the users of your chatbot in the “Audience” tab, which gives you a good overview:
In this overview you can click on each individual user and get all the information of that user, which is extremely useful:
Store information from your chatbot users inside fields. For example, you can ask for someone’s email and store it inside the “email” custom field.
Add tags to users in your chatbot flows to organize and categorize contacts.
Can you create user segments based on custom fields and tags?
Dialogflow
In Dialogflow, you cannot see a complete user overview of all the people that talked with your chatbot.
In fact, if you want to store user information, you need to create a custom integration with a Google Datastore or other kind of database.
Store information from your chatbot users inside fields. For example, you can ask for someone’s email and store it inside the “email” custom field.
Add tags to users in your chatbot flows to organize and categorize contacts.
Can you create user segments based on custom fields and tags?
The winner: ManyChat
This is also a clear win for ManyChat.
With Dialogflow, you cannot save user information in custom fields, tags and create user segments without using a third-party tool or database.
With ManyChat, you can do all these things right in the tool itself.
4. Messages
ManyChat
Manychat provides broadcasts, sequences and also subscribing/unsubscribing from sequences.
What I really like about the sequences in ManyChat is that they are really organized. You can see the complete sequence in one overview and you also see which message is sent at which time, a really good feature.

Also, with ManyChat you can use a feature called “Conditions”, in which you can use logic to send users through a certain flow.
With ManyChat it is possible to make a chatbot in any language, but it is not possible to easily translate this chatbot to different languages (because you need to do this manually and copy your complete chatbot).
- Broadcasts
Send a message to all or a part of your chatbot users at a specific date and time
- Sequences
Send messages on a pre-defined schedule with a certain time interval between those messages
- Conditions
Make checks in your chatbot flow based on if-then logic. For example, if the user has not given their email, ask for their email.
- Multiple languages
Is it possible to create a chatbot in multiple languages?
- Easy to translate
Can you translate text to other languages without using a third-party platform and without creating duplicate flows?
Dialogflow
With Dialogflow, you cannot send broadcasts and sequences. In essence, Dialogflow is user-triggered, which means that it responds when the user asks something, but the chatbot cannot initiate the conversation (or you need to code this yourself).
Also, with Dialogflow you cannot use conditions in your chatbot flows. It is possible to have different branches in your conversation by using Context, but this is kind of a workaround. If you want to use conditions based on user information, you probably need to code this yourself.
Furthermore, with Dialogflow it is possible to have a chatbot that can understand multiple languages at the same time. Unfortunately, it is not easy to translate these messages, because you need to manually add the same intents and same training phrases (but then in a different language).
- Broadcasts
Send a message to all or a part of your chatbot users at a specific date and time
- Sequences
Send messages on a pre-defined schedule with a certain time interval between those messages
- Conditions
Make checks in your chatbot flow based on if-then logic. For example, if the user has not given their email, ask for their email.
- Multiple languages
Is it possible to create a chatbot in multiple languages?
- Easy to translate
Can you translate text to other languages without using a third-party platform and without creating duplicate flows?
The winner: ManyChat
Again, a win for ManyChat.
With ManyChat, you can send broadcasts, create sequences and use conditions in your chatbot flows. You cannot do these things with Dialogflow, unfortunately.
5. AI & NLP
ManyChat
With ManyChat it is only possible to recognize keywords with your chatbot. Based on a keyword (or a group of keywords) your chatbot gives a certain response.
How it looks in ManyChat:
It is no possible to grab the intent of the user, use synonyms or use entities.
ManyChat also doesn’t have a direct integration with DialogFlow. But I created a tutorial on how you can connect ManyChat to Dialogflow.
- Keywords
Trigger chatbot flow based on certain words or phrases a user says to the chatbot.
- Intents
Trigger a chatbot flow by understanding the intent of the user.
- Entities
Capture specific information from sentences. For example, if a user says “veggie pizza”, the chatbot can understand it’s not a regular pizza, but a veggie pizza.
- Dialogflow integration
Does the chatbot platform provide a direct integration with Google’s AI Platform?
Dialogflow
This is the part where Dialogflow is known for.
One of the reasons so many people use Dialogflow, is because of their AI & NLP, which is really good.
As described above, you can train your Dialogflow agent to understand the intent of the user by providing training phrases.
Also, you can use Entities so your chatbot can understand useful information that your users say.
Fun fact: A lot of other chatbot builders integrate with Dialogflow just for using their state-of-the-art AI and NLP.
- Keywords
Trigger chatbot flow based on certain words or phrases a user says to the chatbot.
- Intents
Trigger a chatbot flow by understanding the intent of the user.
- Entities
Capture specific information from sentences. For example, if a user says “veggie pizza”, the chatbot can understand it’s not a regular pizza, but a veggie pizza.
- Dialogflow integration
Does the chatbot platform provide a direct integration with Google’s AI Platform?
The winner: Dialogflow
This is a win for Dialogflow.
With ManyChat you can only recognize keywords and reply to them, while with Dialogflow you can understand the intent of the user and recognize entities.
6. Channels
ManyChat
With ManyChat it is possible to make a chatbot for your website, Facebook Messenger, Instagram, WhatsApp, SMS and Email.
This allows you to make an omnichannel chatbot experience for your users. So for example, when someone gives a certain response on Facebook Messenger, you could send an email based on that response.
With SMS, it is only possible to send text messages to users in the United States and Canada. If you want to send text messages to other countries, you need to use the Twilio integration available in the ManyChat App Store (additional costs apply).
Also, Telegram is in closed beta, which means this channel will soon be added to ManyChat.
- Website
Can you publish your chatbot on your website?
- Facebook
Can you publish your chatbot on Facebook?
- Instagram
Can you publish your chatbot on Instagram?
- Whatsapp
Can you publish your chatbot on WhatsApp?
- Telegram
Can you publish your chatbot on Telegram?
- SMS
Can you publish your chatbot on SMS?
- Slack
Can you publish your chatbot on Slack?
- Skype
Can you publish your chatbot on Skype?
- Email
Can you publish your chatbot on email?
Dialogflow
With Dialogflow, you can put your chatbot on 14 channels:
- Your website
- Facebook Messenger
- WhatsApp (using Twilio)
- Telegram
- SMS (using Twilio)
- Slack
- Skype
- Viber
- Workplace from Facebook
- Hangouts
- Line
- Kik
- Spark
And you can even use Dialogflow to handle one-click telephony:
Next to the AI of Dialogflow, this is one of the greatest benefits. You can create a chatbot on almost any channel.
- Website
Can you publish your chatbot on your website?
- Facebook
Can you publish your chatbot on Facebook?
- Instagram
Can you publish your chatbot on Instagram?
- Whatsapp
Can you publish your chatbot on WhatsApp?
- Telegram
Can you publish your chatbot on Telegram?
- SMS
Can you publish your chatbot on SMS?
- Slack
Can you publish your chatbot on Slack?
- Skype
Can you publish your chatbot on Skype?
- Email
Can you publish your chatbot on email?
No winner
Both chatbot builders allow you to create a chatbot on multiple channels.
While Dialogflow gives you more channels, with ManyChat it is easier to connect with a channel.
Often, with Dialogflow, you need some code to connect to a channel (such as WhatsApp), while with ManyChat this is just the click of a button.
So, no winner on this one!
7. Integrations
ManyChat
ManyChat has a built-in live chat integration. Really good, because this is the most important integration a chatbot software needs. They also provide integrations for:
- Zapier
- Make (formerly Integromat)
- Google Sheets
- ActiveCampaign
- MailChimp
- ConvertKit
- HubSpot
By the way, what I really like about the live chat integration of ManyChat is that they also have an iOS app and Android app, so you can respond to user inquiries on the go.
Moreover, ManyChat has its own App store which allows third-party developers to create their own integrations with ManyChat. Currently, the App Store has 38 apps, but I think this will grow over the years:
Direct integration with live chat, either via a built-in live chat functionality or a third-party live chat platform.
Direct integration with Zapier, one of the largest integration platforms in the world.
Direct integration with Make (formerly Integromat), one of the largest integration platforms in the world.
Direct integration with Google Sheets, to store or retrieve data from sheets.
Can you call a webhook inside your chatbot flow to send data to other applications?
Dialogflow
Unfortunately, Dialogflow doesn’t provide a live chat integration, which is the most important integration of any chatbot builder.
Gladly, there are some companies that provide a combination of live chat and Dialogflow, such as Botcopy.
Moreover, if you want to integrate Dialogflow with other systems, you need to use Fulfillment. With Fulfillment, you can code your own webhooks so you can integrate Dialogflow with other systems.
- Livechat
Direct integration with live chat, either via a built-in live chat functionality or a third-party live chat platform.
- Zapier
Direct integration with Zapier, one of the largest integration platforms in the world.
- Make (formerly Integromat)
Direct integration with Make (formerly Integromat), one of the largest integration platforms in the world.
- Google Sheets
Direct integration with Google Sheets, to store or retrieve data from sheets.
- Webhooks
Can you call a webhook inside your chatbot flow to send data to other applications?
The winner: ManyChat
This is a win for ManyChat.
ManyChat has a live chat and provides direct integrations with a lot of other software companies.
With Dialogflow, you almost have to code these integrations yourself using the Fulfillment feature.
8. Marketing
ManyChat
With ManyChat, is possible to put a Facebook Messenger widget on your website, create a landing page, connect to Facebook ads, use the One-Time Notification, automatically reply to Facebook comments, create buttons and create custom URLs to your chatbot.
Moreover, ManyChat has a really advanced auto-reply to Facebook comments.
Usually, with auto-reply to Facebook Comments, you make a Facebook post, people comment on it and then you send them an automatic message in Facebook Messenger.
But ManyChat goes further. Next to sending a message in Facebook Messenger, you can automatically like the comment and reply with your own comment:
Embed your chatbot as a Facebook Widget on your website.
Embed your chatbot as a native widget (your own branding & colors) on your website.
Can you create a simple landing page to drive users to your chatbot?
Start a conversation with your chatbot when someone clicks on a Facebook Ad
Send one-time notifications via Facebook Messenger for a topic that a chatbot user has opted-in for
Automatically reply with your chatbot to users who comment on your Facebook Posts
Add a button to your website to drive users to your chatbot
Generate a simple URL that can be shared anywhere to send users to your chatbot
Dialogflow
The marketing possibilities of Dialogflow are really limited.
In essence, you can only use Dialogflow Messenger to create a native widget and put it on your website.
With this native widget, you can change the appearance (such as the title and colors) by editing some CSS (mark up language for websites). Also, you can trigger different intents.
- Facebook website widget
Embed your chatbot as a Facebook Widget on your website.
- Native website widget
Embed your chatbot as a native widget (your own branding & colors) on your website.
- Landing pages
Can you create a simple landing page to drive users to your chatbot?
- Facebook Ads
Start a conversation with your chatbot when someone clicks on a Facebook Ad
- One-Time Notification
Send one-time notifications via Facebook Messenger for a topic that a chatbot user has opted-in for
- Facebook comments auto-reply
Automatically reply with your chatbot to users who comment on your Facebook Posts
- Button creator
Add a button to your website to drive users to your chatbot
- Custom URLs for your chatbot
Generate a simple URL that can be shared anywhere to send users to your chatbot
The winner: ManyChat
ManyChat provides way more marketing possibilities than Dialogflow, such as automating replying to Facebook comments and connecting your chatbot to a Facebook Ad.
Again, a win for ManyChat.
9. Pricing
ManyChat
ManyChat provides a free plan that stays free forever. This plan comes with 1000 contacts and does not have all the features that ManyChat provides (but still enough to make a good chatbot).
If you want more features, you can upgrade to the Pro package, which costs 15$ per month, which is a really low price. The price of the Pro package goes up with the number of subscribers your chatbot has. 1K subscribers result in $25 per month and 5K subscribers is $45 per month.
The only possible drawback is that you cannot have a trial for the Pro package, but this does not matter, because there is a 30-day money-back guarantee, no questions asked.
Does the chatbot platform provide a free trial?
Does the chatbot platform provide a free plan?
What is the lowest price per month for creating a chatbot on this platform?
Is it possible to pay monthly?
Is there a money-back guarantee in case you are not satisfied with the platform?
Dialogflow
Dialogflow ES is free if you stay under 180 text requests per minute. This means that you can send 324,000 text messages per month and don’t have to pay anything.
If you go above the 180 requests per minute, you need to pay $0.002 per request. Also, if you want audio input or output, you need to pay extra:
If you have a more advanced chatbot and want to use Dialogflow CX, you pay $20 per 100 chat sessions. Also, if you wanto to use audio input or output, you pay $45 per 100 voice sessions:
In my opinion, Dialogflow is really cheap. For most chatbots, you don’t have to pay anything, you can just use Dialogflow ES for free. Only when your chatbot is really advanced or when you handle a large amount of messages, you need to pay anything.
- Free trial
Does the chatbot platform provide a free trial?
- Free plan
Does the chatbot platform provide a free plan?
- Price per month
What is the lowest price per month for creating a chatbot on this platform?
0 - Monthly pricing available?
Is it possible to pay monthly?
- Money back guarantee
Is there a money-back guarantee in case you are not satisfied with the platform?
No winner
No winner in this category.
Both chatbot builders can be pretty cheap, and they both provide good value for the prices they ask.
10. Analytics
ManyChat
ManyChat provides a basic dashboard for your chatbot analytics, showing you the total subscribers, unsubscribes and net subscribes:

Furthermore, they also provide analytics for each block in your chatbot. For each block, they provide the number of people the message is delivered to, the open rate and the click rate.
And this also holds for sequences:
There are only two drawbacks about the analytics in ManyChat:
- The analytics are all over the place. There is no one clear, in-depth dashboard with all relevant analytics, but this is distributed over multiple sections (Broadcasts, Sequences, etc.)
- There is no overview of unmatched keywords. If a user filled in a word that did not get a response, you cannot get this information in your ManyChat dashboard. This is a big disadvantage because it does not allow you to easily improve your chatbot. But I have made a solution for this: the ManyChat User Input Dashboard.
What ManyChat also has, is the ManyChat Pixel. This is a pixel you can put on your website to track conversions coming from your chatbot, really useful feature!
Dashboard that provides general analytics of your chatbot.
Get the input from users that your chatbot didn’t understand.
The number of messages that were sent by your chatbot.
The percentage of chatbot users that opened a message inside your chatbot.
The percentage of chatbot users that click on a button inside your chatbot.
The percentage of users that converted through your chatbot. For example, the percentage of users that gave their email address
The percentage of interactions where the chatbot did not know an answer to a question.
Can you create your own dashboard or reports?
Dialogflow
In Dialogflow ES, you have a dashboard that shows the number of sessions and the number of interactions:
Moreover, Dialogflow has a “Training” feature that shows the messages your chatbot did (not) understand, so you can easily improve the answers of your chatbot:
If you want more advanced analytics, you can use Dialogflow CX, which also provides analytics on Engagement and the different conversation paths users follow:
In general, Dialogflow provides enough analytics to improve the answers of your chatbot.
- Dashboard
Dashboard that provides general analytics of your chatbot.
- User input
Get the input from users that your chatbot didn’t understand.
- Sent messages
The number of messages that were sent by your chatbot.
- Open rate
The percentage of chatbot users that opened a message inside your chatbot.
- Click rate
The percentage of chatbot users that click on a button inside your chatbot.
- Conversion rate
The percentage of users that converted through your chatbot. For example, the percentage of users that gave their email address
- Fall back rate
The percentage of interactions where the chatbot did not know an answer to a question.
- Custom dashboards/reports
Can you create your own dashboard or reports?
No winner
No winner in this category.
While Dialogflow provides analytics more towards improving the answers of your chatbot, ManyChat’s analytics are more marketing-oriented and focused on conversions.
With both builders you can track your chatbot flows, so no winner in this category.
11. eCommerce
ManyChat
ManyChat has a direct integration with Shopify that allows you to:
- Recover abandoned carts
- Notify customers about orders and shipment updates
- Collect reviews and feedback after purchase
- Generate repeated purchases
It is, however, not possible to buy a product from your Shopify store within the chatbot.
But, you can receive payments through your chatbot by using the Stripe or Paypal integration.
The only drawback is that ManyChat doesn’t have a WooCommerce integration.
Collect payments inside your chatbot
Direct integration with Shopify to get products, order information and cart data.
Direct integration with WooCommerce to get products, order information and cart data.
Ability for chatbot users to buy products or services directly from a chatbot
Trigger messages in the chatbot when a user abandons their cart on a website or inside the chatbot
Dialogflow
Dialogflow doesn’t provide any direct eCommerce integrations.
Collect payments inside your chatbot
Direct integration with Shopify to get products, order information and cart data.
Direct integration with WooCommerce to get products, order information and cart data.
Ability for chatbot users to buy products or services directly from a chatbot
Trigger messages in the chatbot when a user abandons their cart on a website or inside the chatbot
The winner: ManyChat
This is a clear win for ManyChat.
While ManyChat provides integrations for payments and Shopify, Dialogflow does not provide any integration with eCommerce software.
12. Templates & Cloning
ManyChat
ManyChat provides 19 templates which you can directly install to make your chatbot. These include free templates and templates only available for Pro users.
With ManyChat it is possible to make a chatbot template and share it with others. This is really useful when you are making multiple chatbots who do the same thing (for example, Lead generation).
Furthermore, it is possible to duplicate your chatbot flows and chatbot elements to make your chatbot faster.
How many pre-built templates does the chatbot platform provide?
Can you make templates yourself?
Can you share self-created templates with others?
Is it possible to duplicate chatbot flows, so you can easily reuse them?
Is it possible to duplicate chatbot elements, so you can easily reuse them?
Dialogflow
Dialogflow provides 45 pre-built agents that you can use to get started with your chatbot.
Also, you can export each agent and share the ZIP with others (which is basically the same as using templates).
Moreover, you can copy your chatbot flows and chatbot elements so you can easily reuse them.
- Templates
How many pre-built templates does the chatbot platform provide?
45 - Make template
Can you make templates yourself?
- Share template
Can you share self-created templates with others?
- Duplicate chatbot flows
Is it possible to duplicate chatbot flows, so you can easily reuse them?
- Duplicate chatbot elements
Is it possible to duplicate chatbot elements, so you can easily reuse them?
No winner
Both chatbot builders have templates that you can use to get started with building your chatbot.
Also, you can create your own templates and share these with others.
So, no winner on this one.
13. Optimization
ManyChat
It is possible to do A/B testing in ManyChat, but it is not available in the free plan. So you need to upgrade to a “Pro” plan if you want to unlock this feature.
Can you optimize your chatbot flows by performing A/B tests?
Dialogflow
Dialogflow doesn’t provide any optimization, such as A/B Testing.
- A/B Testing
Can you optimize your chatbot flows by performing A/B tests?
The winner: ManyChat
With ManyChat you can perform A/B testing, while this is not possible with Dialogflow.
So a clear win for ManyChat.
14. Support
ManyChat
ManyChat provides extensive tutorials on how to make a chatbot and all of the features on their platform.
They also have proper documentation and good customer support.
What I also love about ManyChat is that they have a large Facebook community (100.000 members) in which you can ask all kinds of questions and learn more about the platform.
Does the chatbot platform provide tutorials on how to use its platform?
Does the chatbot platform provide documentation on how to use its platform?
Does the chatbot platform provide customer support?
Dialogflow
Dialogflow has extensive documentation on how you can use their platform.
NOTE: I also have some Dialogflow tutorial videos on my Youtube channel, which I definitely recommend you to check out!
Moreover, Dialogflow provides support via email.
- Tutorials
Does the chatbot platform provide tutorials on how to use its platform?
- Documentation
Does the chatbot platform provide documentation on how to use its platform?
- Customer support
Does the chatbot platform provide customer support?
No winner
Also, no winner on this category.
With both chatbot builders, you have lots of tutorials and documentation on how you can use their platform and they both provide customer support.
Which one is the winner?
As you can read above, ManyChat wins on way more categories than Dialogflow and is therefore the winner of this comparison.
But this doesn’t mean that Dialogflow is bad software.
In fact, I would highly recommend using Dialogflow for their AI and NLP, which allows you to give better answers to the questions of your users.
I even created a tutorial on how you can connect ManyChat to Dialogflow, which you can read by clicking the button below: