Which AI chatbots are really the most used in companies today?

ChatGPT remains the absolute reference among AI assistants in the workplace.

Despite the exponential growth of new AI tools, ChatGPT maintains its dominant position as the most widespread virtual assistant in companies, thanks to a unique combination of simplicity, adaptability, and computing power. Its adoption has increased impressively, with over 800 million weekly users relying on it for a wide range of tasks: from information retrieval to report writing, drafting emails, and data analysis. Over 92% of Fortune 500 companies have introduced ChatGPT into their internal processes, often choosing it as their first conversational AI tool also for security reasons, thanks to new features like data isolation, corporate Single Sign-On, and centralized policy management. Its direct integration with productivity platforms, API support, and automation capabilities make it a natural choice for those aiming to reduce operational time and increase decision quality, making ChatGPT the true "Swiss Army knife" of workplace AI.

Microsoft 365 Copilot gains ground thanks to its native integration in business workflows.

The strength of Microsoft 365 Copilot lies in its deep integration with the tools millions of people use daily at work, such as Word, Excel, Outlook, and Teams. According to the latest data published by Microsoft, nearly 70% of Fortune 500 companies have already activated Copilot on at least one of their work environments, while globally there are over 26 million active users per month. Copilot acts as a sort of digital colleague always ready to collaborate on documents, emails, calendars, meetings, and presentations, offering contextual suggestions, text generation, data analysis, and even automatic meeting summaries. The arrival of Copilot Plus PCs is further accelerating the spread of this technology, which is now becoming the de facto standard for all organizations that already use the Office suite, eliminating any barrier between traditional activities and new AI-powered workflows.

Gemini is becoming a constant presence for those working on Google Workspace.

2025 marked a turning point for the adoption of Gemini in companies, thanks to Google's decision to include it in all Business and Enterprise Workspace licenses at no additional cost. This means that millions of organizations, simply by accessing Gmail, Docs, Sheets, or Meet, now find Gemini as an AI assistant ready to support any activity. Its spread is also driven by the ability to personalize the experience through the new Gems, AI agents dedicated to specific business functions or departments, enabling automation of recurring tasks, data analysis, content production, or project collaboration. Gemini is no longer seen as a separate tool but as a natural extension of the cloud applications already used every day, facilitating adoption without the need for extra training and fostering widespread productivity across all office activities.

Claude 3 is gaining ground in sectors where privacy, transparency, and compliance are priorities.

Anthropic Claude 3 has established itself especially in contexts where data protection and the transparency of AI decisions are essential. The numbers are steadily growing: more than 18 million monthly users choose it for its “constitutional” architecture, capable of delivering clear, coherent answers and security policies aligned with the needs of regulated businesses such as banks, insurance, law firms, and healthcare. Anthropic’s approach, focused entirely on governance and data-residency mechanisms, has convinced many IT and compliance managers to prefer Claude 3 over less controllable solutions. The result is increasing penetration especially in legal departments, risk management, and audit processes, where the quality and verifiability of AI responses are never optional.

GitHub Copilot is becoming the standard among software development and IT teams.

Within technical and software development teams, GitHub Copilot has achieved adoption levels that no other AI assistant has been able to replicate in the same sector. Recent studies show that 81% of developers who gain access to Copilot install it within hours, and more than two-thirds use it consistently at least five days a week. Its strength lies in perfect integration with the most popular development environments, the ability to generate high-quality code, suggest solutions, speed up debugging, and facilitate the prototyping of new features. The impact on team productivity has been such that many companies have decided to make it a mandatory tool for every new project, integrating it with DevOps pipelines and version control systems, effectively making GitHub Copilot the reference standard for anyone working in professional programming.

Integrated artificial intelligence wins over stand-alone solutions in business workflows.

What clearly emerges from the evolution of the business market is that the most adopted AI solutions are now those already present and integrated within the tools people use every day, with no need to launch external sites or apps. This trend is confirmed by the success of Copilot and Gemini, which present themselves as an invisible but always active layer within documents, meetings, support tickets, and company chats. Companies increasingly evaluate aspects like privacy, security, ease of governance, and the ability to scale adoption across the organization, favoring solutions that reduce technology silos and unify the user experience for all employees. Conversational AI is no longer an experiment, but a true standard layer that supports every phase of the workday.

The ranking of AI solutions most used in today's business workflows.

Looking at the data and strategies of leading companies, the list of the most present AI chatbots at work today is led by ChatGPT Enterprise, followed by Microsoft 365 Copilot, Google Gemini for Workspace, Anthropic Claude 3, and GitHub Copilot. In some vertical sectors, Salesforce Einstein GPT is added, especially among those already using Salesforce CRM platforms. The final choice varies based on needs, existing software stacks, and compliance requirements, but the direction is now clear: conversational AI is becoming the operational foundation on which modern organizations are built, streamlining processes, accelerating activities, and structurally increasing business competitiveness.

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SUMMARY TABLE

AI Chatbot	Key Users / Penetration	Primary Use Case	Platform Integration	Notable Features
ChatGPT Enterprise	92% of Fortune 500, 800M+ weekly users	General-purpose assistant	Web, API, Enterprise SaaS	Data isolation, SSO, scalable, API customizable
Microsoft 365 Copilot	~70% of Fortune 500, 26M+ monthly users	Office productivity	Word, Excel, Outlook, Teams, Copilot PCs	Native in M365, real-time help, meeting summaries
Google Gemini	Millions of Workspace domains	Google Docs, Gmail, Sheets, Meet	Google Workspace	Included by default, Gems agents
Claude 3	18M+ monthly users, regulated sectors	Legal, finance, healthcare	Web, Enterprise deployments	Constitutional AI, transparency, data-residency
GitHub Copilot	81% install rate, 67% daily use	Code generation, debugging	GitHub, VS Code, Azure DevOps	IDE integration, DevOps-ready, fast prototyping
Einstein GPT	CRM-centric organizations	Sales, marketing, customer service	Salesforce Customer 360	Native to CRM, task automations

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