Choose a real digital advisor with this comparison of the 15 best-performing AI chatbots
In 2025, artificial intelligence (AI) chatbots are no longer just technological tools. They have become essential conversational agents for businesses looking to improve their customer service, automate repetitive tasks and deliver a seamless user experience.
However, with so much on offer, it can be difficult to choose the AI chatbot that best meets your needs.
This comparison enables you to find out about the best options available in terms of chatbot software, highlighting their features, benefits and specific characteristics.
Why use an AI chatbot?
Let's be clear: this type of bot is not just a computer programme. It's a real colleague who can :
- answer questions;
- assist your teams
- generate instant content;
- and even learn from your exchanges.
Let's start with the basics: integrating this type of software into your set-up won't disrupt your daily routine; on the contrary, it will make it run more smoothly. You can usually launch a test by taking advantage of a free version (free trial for a few months) to really assess its impact on your service, without stress: no bank card, no long contract.
👉 Imagine a concrete example: you have a large number of incoming requests every day. The chatbot:
- handles simple questions ;
- leaves complex cases to a human agent via live chat;
- provides you with precise data to refine your strategy.
It's a human-like intelligence, with a bit of code behind it. The secret to the success of AI chatbots lies in the way they are built. It's a broad language model, trained in machine learning and language understanding.
💡 The market doesn't lie: according to the latest projections, between 2025 and 2029, the size of the global AI chatbot market, estimated at between USD 10 and 15 billion in 2025, could reach USD 46 to 47 billion in 2029, with annual growth of between 24% and 30%. These figures confirm that these conversational agents are no longer a fiction, but an essential strategic lever.
Comparison table of the best AI chatbots
| Chatbot AI | Key features | Key features | Ideal for |
| ChatGPT | Versatility, fluency of language, fine-grained contextual understanding | Content generation, customer support, API, multimodal (text, image, voice) | VSEs, SMEs, large companies |
| Claude 3.7 | Advanced reasoning, complex task processing, nuanced and reliable | Document analysis, long answers, "extended thinking | Complex tasks, data analysis |
| Copilot | Perfect integration with Microsoft 365, contextual understanding of documents | Writing support, automation, Copilot Vision (visual interaction) | Companies using Microsoft |
| Gemini | Native integration with Google Workspace, multimodal AI | Text, image, video and audio processing, creation of Gems (personalised agents) | Google companies, collaborative teams |
| Ada Chatbot | Enhanced customer experience, adaptation to complex environments | No-code interface, management of massive volumes of requests | Support teams |
| Dialogflow | Powerful, flexible solution | Construction of intelligent conversational agents, integrated voice recognition | Companies looking to improve customer communication |
| Drift | Boost lead generation, adjust conversation in real time | Automatic lead qualification, personalised interactions | Marketing and sales teams |
| Kuki | Ability to engage in funny, natural dialogue, humanising interaction | Content creation, engagement and user interaction | Marketing and customer service teams |
| ManyChat | Visual interface, great flexibility | Creation of chatbots on social networks, sending targeted campaigns | Brands and designers on social networks |
| Grok 3 | Raw performance, humorous tone, DeepSearch engine | Real-time search, Think mode, creative AI | Creators, developers, original communication |
| QuillBot | Fluid, personalised content authoring, speed of execution | Paraphrasing tool with several modes, integration with everyday tools | Writers, marketers and professionals who want to improve, generate and translate content |
| Rasa | Possibility of building an ultra-personalised assistant, active and passionate community | Chatbot creation, data management | Developers |
| SnatchBot | Powerful platform, free to start | Design of conversational flows, management of complex scenarios | International companies |
| Tidio | Easy to deploy, integrated analysis tools | Automated chat, live messaging option | SMES |
| Watsonx Assistant | Conversational search technology, advanced security | No-code and low-code visual editor, native integration with over a hundred applications and channels | Demanding sectors such as finance, healthcare and industry |
The 15 best AI chatbots
ChatGPT
Developed by OpenAI, ChatGPT is renowned for its ability to understand and generate natural language in a fluid manner. It is particularly well suited to businesses looking for a flexible, scalable solution. Its GPT-4o version offers enhanced performance, particularly in terms of speed and cost.
GPT-4o is an advanced multimodal model capable of processing and generating text, images and audio. It is designed to deliver more natural and engaging interactions, with improved contextual understanding and the ability to handle complex conversations. This version also improves support for non-English languages, offering more accurate translation and better understanding of linguistic nuances.
In terms of performance, GPT-4o stands out for its speed and efficiency. It is faster than its predecessor, GPT-4 Turbo, delivering real-time responses with an average delay comparable to the speed of human speech. This speed is particularly beneficial for applications requiring real-time interaction, such as voice assistants and online customer services.
ChatGPT
Claude 3.7 Sonnet
Developed by Anthropic, Claude 3.7 Sonnet stands out for its ability to analyse complex contexts and generate nuanced responses, making it a preferred choice for companies dealing with sensitive data or requiring advanced analysis.
This hybrid model incorporates an advanced reasoning architecture, making it possible to handle simple tasks and complex issues simultaneously.
Thanks to its 'extended thinking mode', Claude 3.7 Sonnet can allocate more computational resources to in-depth analysis of detailed information, delivering more accurate and relevant answers.
Claude
Microsoft Copilot
Microsoft Copilot, developed by Microsoft, integrates seamlessly with Microsoft 365 suite applications such as Word, Excel, PowerPoint, Outlook and Teams. This AI chatbot enables businesses to automate repetitive tasks, analyse complex data and generate content efficiently, all without disrupting existing processes. Its ability to understand the context of documents, emails and conversations makes it a powerful tool for improving productivity and collaboration within teams.
One of the notable features of Microsoft Copilot is the integration of Copilot Vision, which enables visual interaction with applications on Windows 10 and 11, as well as iOS and Android devices. This feature offers more interactive and contextual assistance, analysing user actions in real time and generating session transcripts for later follow-up. It is important to note that this functionality is opt-in, ensuring the confidentiality of user data.
For businesses, Microsoft Copilot offers contextual assistance directly within Microsoft 365 applications, enabling content authoring, data analysis, task automation and more effective collaboration, all without disrupting existing workflows.
Copilot
Gemini
Developed by Google, Gemini is distinguished by its native integration with the Google ecosystem, providing a seamless experience for users of services such as Google Workspace. This integration enables businesses to make full use of Gemini's capabilities within their day-to-day tools.
Like Chat GPT, Gemini is a multimodal artificial intelligence model, capable of processing and generating text, images, code, audio and video. This versatility makes it a powerful tool capable of meeting a wide range of demands.
It is particularly well suited to cloud-based businesses, enabling them to centralise their operations and benefit from intelligent automation.
One of Gemini's notable features is its integration with Google Workspace, including Gmail, Docs, Sheets, Meet and Drive. This integration enables users to benefit from intelligent assistance directly in their applications, making it easier to write emails, create documents, analyse data and manage meetings.
In addition, Gemini offers advanced customisation tools, such as the creation of Gems, personalised intelligent agents that can automate specific tasks, such as email management or activity planning. These features are available in the AI Pro and AI Ultra packages of Google Workspace.
Ada Chatbot
Ada is playing in the big league with an AI platform dedicated to automating customer service. Its secret? A hyper-accessible no-code interface that lets you deploy sophisticated chatbots without coding a single character. We're thinking in particular of large companies that want to drastically reduce their response times while increasing customer satisfaction.
What makes Ada a champion is its ability to handle massive volumes of queries, while offering precise, personalised responses. It doesn't just recite a script, it understands the nuances of the questions.
Ada is also very clever in its approach: it knows when to turn to a human agent.
In short, it's a chatbot that takes the burden off support teams, improves the customer experience and adapts to complex environments. A real Swiss army knife for customer service professionals.
Ada
Dialogflow
Dialogflow is the Google Cloud platform dedicated to building intelligent conversational agents. Originally born out of the acquisition of api.ai, the solution can now be used to design assistants capable of understanding text and voice requests, with support for around twenty languages and integrated voice recognition. Thanks to a robust NLP engine, your chatbots will detect intentions and entities in complex, multi-turn conversations.
You can integrate Dialogflow with Google Assistant, WhatsApp, Messenger, Slack, web or mobile applications via SDKs or webhooks, but it's not ready to use as a simple Gmail extension.
The interface offers pre-built templates, a visual editor and analysis tools to track usage, engagement and performance.
If you're looking for a powerful, flexible and globally integrated solution for your chat or virtual assistance needs, Dialogflow is an excellent choice: in any case, its features aren't limited to text, but give you real multimodal and multilingual capability.
Dialogflow
Drift
Drift is the ideal co-pilot for boosting lead generation. Designed for marketing and sales teams, this AI chatbot turns every visitor into a concrete opportunity.
It automatically qualifies prospects, suggests appointments and personalises each interaction with a fluidity that would make a seasoned salesperson blush.
This isn't just chit-chat: Drift captures the hidden intention behind each message and adjusts the conversation in real time, naturally guiding the prospect to the next stage of the sales tunnel.
When it comes to integration, Drift keeps things simple. Whether it's with CRM or marketing tools, everything fits together perfectly, preventing data from disappearing into a digital black hole. The result is accurate, actionable information that's ready to drive conversions. Drift is the perfect combination of intelligence and commercial pragmatism.
Drift
Grok 3
Developed by xAI, the artificial intelligence company founded by Elon Musk, Grok 3 stands out for its ability to combine technical performance with a humorous tone. This AI model is designed to offer responses that are both relevant and witty, making interactions more engaging for users.
One of Grok 3's notable features is its Think mode, which activates in-depth reasoning for complex tasks. This mode is particularly useful for businesses requiring detailed analysis or assistance in specialist areas.
In addition, Grok 3 incorporates DeepSearch, an intelligent search engine capable of generating detailed summaries from real-time data, enhancing its ability to provide up-to-date, relevant information.
Kuki (formerly Mitsuku)
Kuki is a chatbot with a difference, the king of light-hearted conversation and entertainment.
Formerly known as Mitsuku, it has won the prestigious Loebner prize several times, a bit like the Oscars for conversational AI. Its strong point? Its ability to engage in natural, funny and sometimes even philosophical dialogue.
Where other chatbots simply reply, Kuki can hold a real conversation, with touches of humour and a distinct personality. It's perfect for experiences where the aim is to captivate, amuse and even surprise the user, rather than to push a sale or automate a service. So it's great to be able to benefit from the advice of this personal bot, which really does seem to have a fresh approach compared with most of the robots on the market.
In short, Kuki is a conversation companion that knows how to keep the dialogue alive. An AI with character, ideal for those looking to humanise interaction without the headaches.
ManyChat
ManyChat is the option of choice for brands and creators on social networks. It lets you create chatbots on Facebook Messenger, Instagram or WhatsApp using customisable scenarios, without requiring any programming skills. Every interaction becomes an opportunity to capture the attention of a connected audience.
Its visual interface makes creating sequences intuitive. The solution makes it possible to automate responses, send targeted campaigns or even make sales directly via messaging.
The real strength of this solution is its flexibility. Scenarios can evolve rapidly according to feedback or current trends. It's a tool that favours agility and commitment, without delving into pure, complex technology.
Manychat
QuillBot
QuillBot is an all-in-one AI platform for demanding content creators. Paraphrasing, text generation, grammar correction, translation, plagiarism detection, summarisation... All in one software package. Its free chatbot, accessible without registration, acts as an assistant just a click away to find ideas, write prompts or generate fluid content in a matter of seconds.
The jewel in QuillBot's crown? Its paraphrasing tool with several modes: from the most formal to the most creative, including shortening or expanding the text. A slider lets you adjust the level of synonyms, so that the result perfectly matches the desired tone, whether to simplify technical jargon or to liven up a text.
In terms of practicality, QuillBot integrates effortlessly into everyday tools such as Google Docs, Microsoft Word, Gmail, or via a browser extension.
A flexible, fast solution designed for writers, marketers and professionals who want a reliable AI assistant to improve, generate or translate their content in a flash.
Quillbot
Rasa
For those who like to take charge and for whom coding is not a dirty word, Rasa is the perfect tool. This open source solution is the ultimate toolbox for creating a totally personalised chatbot, with no compromises. There are no limits imposed by proprietary platforms: here, every line of code can be controlled, every conversational flow, and even data management. A real feast for passionate developers!
Rasa shines particularly brightly for companies with a strong technical team who don't want to leave their data at the mercy of a third-party cloud. It lets you keep a tight rein on confidentiality while building an assistant that's ultra-tailored to specific needs. If you want a chatbot that really speaks your language and that of your customers, this is the solution to consider.
As an added bonus, Rasa is backed by an active and passionate community. That means regular updates, shared resources and a constantly evolving environment. In short, it's a bit like the "do it yourself" of chatbots, but with the support of a real tribe of experts ready to help you.
Rasa
SnatchBot
SnatchBot is a robust multi-channel solution that speaks several languages. This platform offers integrated AI and a simple visual editor for designing conversational flows. You don't need to be a code expert to build a chatbot that rocks on several channels at once: website, Facebook, WhatsApp, SMS, you choose.
This chatbot is tailor-made for international businesses that want to offer a seamless experience, no matter where their customer is or what language they speak. SnatchBot is also highly flexible, with advanced options for managing complex scenarios and integrations with CRM or ERP systems.
The icing on the cake is that the platform is free to start with, so there's no need to worry about experimenting. A real pleasant surprise, combining power, simplicity and accessibility, to be included in the digital suitcase of any company aiming to go global.
Tidio
Tidio is a friendly digital assistant specially designed for small and medium-sized businesses. This chatbot combines fast automated chat with a live messaging option whenever human intervention becomes necessary. The result is a frictionless experience, designed to ensure that no sale slips through the cracks.
Set-up is child's play: in just a few clicks, this solution integrates with platforms such as Shopify, WordPress or social networks. There's no technical manual to read, so users are up and running in no time. The interface centralises all exchanges, making navigation clear and efficient.
What really sets Tidio apart are its integrated analysis tools. The chatbot uses existing exchanges to learn, understand visitors' intentions and adapt its responses. It evolves over time, while keeping costs under control. It's a solution designed to offer professional, scalable assistance, with no complexities.
Tidio
Watsonx Assistant IBM
Known as Watson Assistant, the service was renamed Watsonx Assistant in May 2023. Today, it has established itself as an enterprise conversational platform for rapidly creating intelligent virtual assistants for customers and employees.
Its strength lies in its conversational search technology: instead of manually coding answers, Watsonx Assistant automatically draws on your internal knowledge bases (FAQs, documentation, SharePoint, Salesforce, etc.) and generates contextual, perfectly relevant answers using the Retrieval-Augmented Generation (RAG) method. This frees your teams from static editorial work and guarantees answers that are always up to date as soon as your sources change.
The tool offers a no-code or low-code visual editor for designing personalised conversational paths, with no technical expertise required. It integrates natively with over a hundred applications and channels (website, mobile, email, CRM), while offering advanced security features: data encryption, cloud or on-premise deployment and data control. If these parameters are properly activated, Watsonx Assistant is particularly well suited to demanding sectors such as finance, healthcare and industry.
IBM Watsonx
How do you choose your AI chatbot? Our 3 tips
#1 Know your specific objectives
Choosing the right AI chatbot is not just a question of technological flair, it is above all a strategic decision that must be based on a clear understanding of your company's specific needs.
The first step is to define your objectives precisely.
- Do you want to automate customer service to reduce waiting times and free your human agents from repetitive questions?
- Perhaps you're looking for an assistant capable of generating content to feed your communications?
- Or a conversational agent capable of improving the user experience by offering smoother, more personalised interactions?
👉 This clear definition of objectives will naturally guide the choice of chatbot model best suited to your context.
#2 Select a chatbot according to your budget
The second point, and not the least important, concerns the budget you're prepared to allocate to this integration.
The market offers a wide range of tools, from free or open source solutions to premium platforms, often with advanced features such as :
- automatic content generation
- in-depth understanding of natural language
- advanced analysis capabilities.
It is essential to weigh up the cost-benefit ratio, because a high-performance chatbot must not only be effective, but also form part of a viable long-term economic strategy.
#3 Make it easy to integrate and adopt
Next, integration with your existing tools is a determining factor. Your chatbot must be able to communicate with your CRM, ERP, messaging platforms or even your websites.
This compatibility ensures that :
- data flows seamlessly ;
- customer conversations are properly contextualised
- human agents have the relevant information to intervene when necessary.
An isolated chatbot runs the risk of creating information silos, thereby undermining the consistency of your customer service and the overall quality of the user experience.
Finally, ease of use should not be underestimated. A tool that is too complex, difficult to configure or get to grips with runs the risk of being under-utilised by your teams. You need an intuitive interface, settings that are accessible without in-depth technical skills, and reliable support.
The chatbot should become an ally that simplifies day-to-day work rather than a source of additional complications. Choosing an AI chatbot means striking a subtle balance between strategic ambitions, budgetary constraints, integration needs and user-friendliness.
FAQ on AI chatbots
What is an AI chatbot and how does it differ from a traditional chatbot?
An AI chatbot is a conversational agent capable of analysing, understanding and generating natural language using artificial intelligence models, such as those developed by OpenAI (GPT).
Unlike traditional chatbots with fixed scenarios, AI makes it possible to answer a wide variety of questions with greater nuance, contextual relevance and conversational fluidity.
It relies on machine learning to continuously improve, whereas a traditional bot follows a rigid script.
What are the concrete benefits of an AI chatbot for a company?
An AI chatbot improves customer service availability by answering frequently asked questions instantly, 24 hours a day.
It also makes it possible to relieve human agents of repetitive tasks, automate content generation, provide personalised information according to customer profile or journey, and ensure a consistent experience across all points of contact: website, mobile application, social networks or live chat.
The result: a faster, smarter and more profitable service.
How can an AI chatbot be integrated into the tools already in use in companies?
Most AI chatbot solutions integrate easily with CRM systems such as Salesforce or HubSpot, ticketing platforms such as Zendesk, or messaging tools such as WhatsApp, Facebook Messenger or Slack.
This seamless integration makes it possible to centralise customer data, contextualise conversations more effectively and automatically trigger actions in your internal systems.
Can you configure an AI chatbot without being a developer?
Yes, and fortunately so.
Many platforms now offer no-code or low-code interfaces that allow you to create, train and adjust an AI chatbot without touching a single line of code.
Visual editors, ready-to-use templates and guided wizards make it possible to rapidly deploy a chatbot even with limited technical skills.
Can an AI chatbot handle several languages?
Absolutely.
GPT-type language models are multilingual and can understand and generate text in several dozen languages, with a good level of fluency.
This makes it possible to offer a unified customer experience, even for international audiences.
☝️ However, it is important to test and adjust for priority languages, as certain cultural or syntactic nuances may require customisation.
How can the effectiveness of an AI chatbot be measured once it has been set up?
There are several key indicators that can be monitored:
- automatic response rate ;
- post-conversation customer satisfaction rate;
- number of interactions handled without human intervention;
- reduction in average processing time, ;
- conversion generated in the user path, etc.
This data can be used to continually optimise the chatbot's effectiveness, by refining the scenarios, intentions and suggestions offered.
Are AI chatbots compliant with the RGPD?
Yes, provided that the data collection and processing parameters are properly configured.
It is essential to comply with the obligations of transparency, consent and the right to be forgotten.
Serious publishers offer secure storage options, advanced privacy settings and integrations that comply with European standards.
☝️ The chatbot must act as a responsible agent, not a conversational spy.
Are there free or open source solutions?
Yes, some platforms offer a free package or a time-limited trial.
Others, such as Rasa or Botpress, are open source and allow for extensive customisation if you have an in-house technical team.
That said, free versions are often limited in terms of support, integrations and power. For large-scale professional use, a paid plan is almost always essential.
What can we learn from AI chatbots?
In 2025, AI chatbots are no longer simply automated assistants: they have become essential strategic levers for improving customer service efficiency, automating repetitive tasks and offering a fluid, personalised experience that is available 24/7.
Thanks to advances in natural language and artificial intelligence, they can now be easily integrated into business tools, adapt to specific contexts and respond with increasing precision, whatever the sector.
Choosing the right chatbot depends above all on a company's objectives, budget, existing tools and the ability of its teams to deploy it effectively. Whether it's ChatGPT, Claude, Gemini, Grok or Copilot, each solution has its own specific strengths, from versatility to specialisation, from integration to ergonomics.
In the future, the challenges will lie in aligning conversational AI with the overall customer relations strategy: data governance, transparency, large-scale personalisation and the ethics of automation. The AI chatbot is no longer an option: it is an essential building block of the modern customer experience, destined to evolve at the same pace as artificial intelligence itself.
Maëlys De Santis, Growth Managing Editor, started at Appvizer in 2017 as Copywriter & Content Manager. Her career at Appvizer is distinguished by her in-depth expertise in content strategy and marketing, as well as SEO optimization. With a Master's degree in Intercultural Communication and Translation from ISIT, Maëlys also studied languages and English at the University of Surrey. She has shared her expertise in publications such as Le Point and Digital CMO. She contributes to the organization of the global SaaS event, B2B Rocks, where she took part in the opening keynote in 2023 and 2024.
An anecdote about Maëlys? She has a (not so) secret passion for fancy socks, Christmas, baking and her cat Gary. 🐈⬛