Opt for a real digital advisor with this comparison of the 15 best-performing AI chatbots
In 2025, artificial intelligence (AI) chatbots are no longer mere technological tools. They have become essential conversational agents for companies looking to improve 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 suits your needs.
This comparison enables you to learn about the best options available in terms of chatbot software, highlighting their features, benefits and specificities.
Why use an AI chatbot?
Let's be clear: this type of bot is not a simple computer program. 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 setup 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 of AI chatbot success lies in its construction. 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 10 and 15 billion USD in 2025, could reach 46 to 47 billion USD in 2029, with annual growth of between 24% and 30%. These figures confirm that conversational agents are no longer a fiction, but an essential strategic lever.
Comparative table of the best AI chatbots
| AI Chatbot | Key features | Key features | Ideal for |
| ChatGPT | Versatility, language fluency, fine-grained contextual understanding | Content generation, customer support, API, multimodal (text, image, voice) | VSEs, SMEs, large corporations |
| 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 (personalized agents) | Google Enterprises, 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 | Building intelligent conversational agents, integrated speech recognition | Companies looking to improve customer communication |
| Drift | Boost lead generation, adjust conversation in real time | Automatic lead qualification, personalized interactions | Marketing and sales teams |
| Kuki | Ability to engage in funny, natural dialogues, humanizing interaction | Content creation, engagement and user interaction | Marketing and customer service teams |
| ManyChat | Visual interface, high flexibility | Creation of chatbots on social networks, sending targeted campaigns | Brands and designers present on social networks |
| Grok 3 | Raw performance, humorous tone, DeepSearch engine | Real-time search, Think mode, creative AI | Creators, developers, original communication |
| QuillBot | Fluid, personalized content authoring, fast execution | Multi-mode paraphrasing tool, integration with everyday tools | Writers, marketers and professionals who want to improve, generate and translate content |
| Rasa | Possibility of building an ultra-customized assistant, active and passionate community | Chatbot creation, data management | Developers |
| SnatchBot | Powerful platform, free to start | Design conversational flows, manage 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 or industry |
The 15 most successful AI chatbots
ChatGPT
Developed by OpenAI, ChatGPT is renowned for its ability to understand and generate natural language fluently. It is particularly well suited to companies 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 analyze complex contexts and generate nuanced answers, making it a preferred choice for companies dealing with sensitive data or requiring advanced analysis.
This hybrid model incorporates an advanced reasoning architecture, enabling it to handle both 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 precise and relevant answers.
Claude
Microsoft Copilot
Microsoft Copilot, developed by Microsoft, seamlessly integrates with Microsoft 365 suite applications such as Word, Excel, PowerPoint, Outlook and Teams. This AI chatbot enables companies to automate repetitive tasks, analyze complex data and generate content efficiently, all without disrupting existing processes. Its ability to understand the context of documents, e-mails and conversations makes it a powerful tool for improving productivity and collaboration within teams.
A notable feature 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, analyzing user actions in real time and generating session transcripts for later follow-up. It's important to note that this feature is opt-in, ensuring the confidentiality of user data.
For enterprises, 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 stands out for its native integration with the Google ecosystem, offering a seamless experience for users of services such as Google Workspace. This integration enables companies to fully exploit Gemini's capabilities within their everyday 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 centralize 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 within their applications, making it easier to write e-mails, create documents, analyze data and manage meetings.
In addition, Gemini offers advanced personalization tools, such as the creation of Gems, personalized intelligent agents that can automate specific tasks, such as e-mail management or activity planning. These features are available in Google Workspace's AI Pro and AI Ultra packages.
Gemini
Ada Chatbot
Ada plays in the big league with an AI platform dedicated to customer service automation. 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, personalized responses. It doesn't just recite a script, it understands the nuances of 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 offloads support teams, improves the customer experience and adapts to complex environments. A true Swiss army knife for customer service professionals.
Ada
Dialogflow
Dialogflow is the Google Cloud platform dedicated to building intelligent conversational agents. Originally born from the acquisition of api.ai, the solution now enables the design of assistants capable of understanding text and voice queries, with support for some twenty languages and integrated speech 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 analytics 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 offer real multimodal and multilingual capability.
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 personalizes each interaction with a fluidity that would make a seasoned salesperson blush.
This is no mere chit-chat; Drift captures the hidden intention behind each message and adjusts the conversation in real time, naturally guiding the prospect to the next step in 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: accurate, actionable information ready to drive conversions. Drift is the perfect blend 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 companies requiring detailed analysis or assistance in specialized fields.
In addition, Grok 3 incorporates DeepSearch, an intelligent search engine capable of generating detailed summaries from real-time data, reinforcing its ability to deliver up-to-date, relevant information.
Kuki (formerly Mitsuku)
Kuki is a chatbot with a difference, the king of light conversation and entertainment.
Formerly known as Mitsuku, it has won the prestigious Loebner Award several times, a bit like the Oscars of conversational AI. Its strong point? Its ability to engage in natural, funny and sometimes even philosophical dialogues.
Where other chatbots simply reply, Kuki can hold a real conversation, with touches of humor 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 a pleasure to benefit from the advice of this personal bot, which really does seem to have a fresh approach compared to most robots on the market.
In short, Kuki is the conversation companion that knows how to keep the dialogue alive. An AI with character, ideal for those looking to humanize interaction without the headaches.
ManyChat
ManyChat is the option of choice for brands and creators on social networks. It enables chatbots to be created on Facebook Messenger, Instagram or WhatsApp via customizable scenarios, without the need for programming skills. This turns every interaction into an opportunity to capture the attention of a connected audience.
Its visual interface makes sequence creation intuitive. The solution can be used to automate responses, send targeted campaigns or even generate 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 favors agility and commitment, without delving into pure, complex technology.
Manychat
QuillBot
QuillBot is the all-in-one AI platform for demanding content creators. Paraphrasing, text generation, grammar correction, translation, plagiarism detection, summarization... 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 text shortening or expansion. A slider lets you adjust the level of synonyms, so that the result perfectly matches the desired tone, whether to simplify technical jargon or energize a text.
In terms of practicality, QuillBot integrates effortlessly with everyday tools such as Google Docs, Microsoft Word, Gmail, or via a browser extension.
A fast, flexible solution for editors, 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 isn't a dirty word, Rasa is the perfect tool. This open source solution is the ultimate toolbox for creating a totally customized chatbot, without compromise. No limits imposed by proprietary platforms: here, every line of code can be mastered, every conversational flow, even data management. A real feast for passionate developers!
Rasa shines particularly brightly for companies with strong technical teams 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 ultra-tailored assistant for 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. This 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 multiple channels at once: website, Facebook, WhatsApp, SMS, you name it.
This chatbot is tailor-made for international companies 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 headache in 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. With no technical manual to read, users are up and running in no time. The interface centralizes all exchanges, making navigation clear and efficient.
What really sets Tidio apart are its integrated analysis tools. The chatbot exploits 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, without complexities.
Tidio
Watsonx Assistant IBM
Known as Watson Assistant, the service was renamed Watsonx Assistant in May 2023. Today, it stands out as an enterprise conversational platform for rapidly creating intelligent virtual assistants for customers and employees.
Its strength lies in conversational search technology: instead of manually coding answers, Watsonx Assistant automatically draws on your internal knowledge bases (FAQ, documentation, SharePoint, Salesforce, etc.) and generates contextual, perfectly relevant answers thanks to Retrieval-Augmented Generation (RAG). 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 features a no-code or low-code visual editor for designing personalized conversational paths, with no technical expertise required. It integrates natively with over a hundred applications and channels (website, mobile, messaging, 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 or industry.
IBM Watsonx
How to choose your AI chatbot? Our 3 tips
#1 Know your specific objectives
Choosing the right AI chatbot isn't just a question of technological flair, it's first and foremost 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 communication?
- Or a conversational agent capable of enhancing the user experience by offering smoother, more personalized interactions?
👉 This clear definition of objectives will naturally guide the choice of the chatbot model best suited to your context.
#2 Select a chatbot according to your budget
The second point, and not the least, concerns the budget you're willing to allocate to this integration.
The market offers a wide range of tools, from free or open source solutions to premium platforms, often equipped with advanced features such as:
- automatic content generation ;
- in-depth understanding of natural language ;
- advanced analysis capabilities.
It's 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 Easy integration and adoption
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 contextualized;
- human agents have the relevant information to intervene when necessary.
An isolated chatbot risks creating information silos, thus undermining the coherence 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 learn to use, risks being under-utilized 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, budget 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 analyzing, understanding and generating natural language using artificial intelligence models, such as those developed by OpenAI (GPT).
Unlike traditional chatbots with fixed scenarios, AI can answer a wide variety of questions with greater nuance, contextual relevance and conversational fluidity.
It relies on machine learning to continuously improve, where 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 relieves human agents of repetitive tasks, automates content generation, provides personalized information based on customer profile or journey, and ensures a consistent experience across all touchpoints: website, mobile app, social networks or live chat.
The result: faster, smarter, more profitable service.
How can an AI chatbot integrate with existing enterprise tools?
Most AI chatbot solutions integrate easily with CRMs like Salesforce or HubSpot, ticketing platforms like Zendesk, or messaging tools like WhatsApp, Facebook Messenger or Slack.
This seamless integration allows you to centralize customer data, better contextualize conversations and automatically trigger actions in your internal systems.
Can you set up an AI chatbot without being a developer?
Yes, and fortunately so.
Many platforms today offer no-code or low-code interfaces that enable you to create, train and fine-tune an AI chatbot without touching a 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 multiple languages?
Absolutely.
GPT-type language models are multilingual and can understand and generate text in dozens of 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 customization.
How can we measure the effectiveness of an AI chatbot once it has been set up?
There are several key indicators that can be tracked:
- 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 enables us to continuously optimize the chatbot's effectiveness, by refining the scenarios, intentions or suggestions proposed.
Are AI chatbots RGPD-compliant?
Yes, provided that data collection and processing parameters are properly configured.
It's 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 extensive customization 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, personalized experience that's available 24/7.
Thanks to advances in natural language and artificial intelligence, they now integrate easily with 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 specialization, from integration to ergonomics.
In the future, the challenges will focus on aligning conversational AI with overall customer relations strategy: data governance, transparency, large-scale personalization and the ethics of automation. The AI chatbot is no longer an option: it's 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 content 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. 🐈⬛