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Four AI assistants are currently competing for business use among French SMEs: Claude (Anthropic), ChatGPT (OpenAI), Gemini (Google), and Mistral (Mistral AI). This comparison, compiled by the Data & AI teams at IT Systèmes, examines their pricing, their stance on data sovereignty, and their practical applications to help you make an informed choice without relying solely on marketing claims.
Key Takeaways
- Claude Cowork is not a standalone product: it is an agent-based mode of the Claude (Anthropic) app that works directly on your local files and folders. It is included in Claude Pro ($17/month) and Team ($20+ per user per month) subscriptions and is not sold separately.
- When it comes to data sovereignty, Mistral is the only one that natively hosts data in France/the EU by default. With ChatGPT, data residency in the EU is only available on the Enterprise plan (not on the Business plan, which is the relevant plan for an SME); for Claude and Gemini, we have not found an equivalent guarantee to confirm with the provider.
- None of these tools replaces an existing ecosystem: an SME already using Microsoft 365 will naturally gravitate toward Copilot, while an SME using Google Workspace will gravitate toward Gemini.
- The price isn't the right benchmark for comparison: all four offer a free plan and an individual plan for around 15–20 €/month. The differences lie in the team/enterprise plans, data governance, and integration with your tools.
The four AI assistants, in one sentence each
- Claude is the AI assistant developed by the American company Anthropic, designed for complex agent-based work (coding, analysis, and automation of multi-step tasks). Cowork is its “digital colleague” mode: rather than a conversation, it’s a work session where Claude reads, edits, and creates files directly on your computer, with human oversight for important decisions.
- ChatGPT is the conversational AI developed by the American company OpenAI; it is the most widely used among the general public and features an extensive ecosystem of connected third-party applications (Canva, Spotify, Microsoft 365, Google Drive, Slack, GitHub).
- Gemini is Google's AI assistant, available as a standalone app and natively integrated into Gmail, Docs, Sheets, and other Google Workspace tools.
- Mistral, through its product Vibe (formerly Le Chat), is the AI assistant developed by the French company Mistral AI, which focuses on data sovereignty and European hosting. We have published a comprehensive guide to Mistral AI for small and medium-sized businesses.
Price Comparison for an SME
All prices listed below are exclusive of tax, in dollars or euros depending on the currency displayed by the publisher, and should be verified before making any commitment (the four publishers update their price lists several times a year).
Two methodological notes: The ChatGPT Plus prices and the Google Workspace rates (including Gemini) are sourced from specialized secondary sources that we were unable to verify directly on the official pages at the time of writing (due to slow loading times); the other amounts are confirmed on the publishers’ official pricing pages, listed in the sources at the end of the article.
Key takeaway: For a team of 10 people, the minimum cost is around $200 to $250 per month with Claude, ChatGPT, or Mistral on a team plan. Gemini stands out because it no longer has Copilot-style additional costs: the AI is included in the Workspace price you’re likely already paying.
Sovereignty and the GDPR: The Criterion That Really Sets Them Apart
This is where the four offerings differ most significantly, and it is often the deciding factor for a French SME subject to the GDPR:
- Mistral is a French company that hosts its services natively in France/the EU, and also offers the option of using certified French hosting providers (OVHcloud, Scaleway) for enhanced control. It is the only one of the four solutions designed with this feature in mind from the outset.
- ChatGPT offers data residency in 10 regions, including the EU, but only on the Enterprise plan. On the Business plan—the option that best meets the needs of an SME—this guarantee is not included, according to OpenAI’s official feature comparison.
- Claude (Anthropic) has published a regional compliance page and offers a "U.S.-only" inference option—for which there is an additional charge—for workloads that must remain in the United States, suggesting that the default location is not guaranteed to be within the EU across all plans. We have not found an explicit commitment equivalent to Mistral’s: please check directly with Anthropic based on your plan and use case.
- Gemini (Google) relies on Google's global cloud infrastructure, with data localization options depending on the Google Workspace edition you subscribe to. We have not confirmed a default EU residency guarantee for the Business Standard plan: please check with Google based on your edition.
Key takeaway: If GDPR compliance and data localization are your top priorities, Mistral has a structural advantage. For the other three factors, the guarantee of EU residency is primarily available on the most expensive Enterprise plans, not on the entry-level plans used by most SMEs. Our guide to Mistral AI for SMEs goes into more detail on this point.
What Sets Each Assistant Apart in Terms of Usability
- Claude / Cowork: Its strength lies in its ability to handle long, complex tasks (document analysis, coding, multi-step automation directly on files on your computer). It is less prevalent in the third-party app ecosystem than ChatGPT.
- ChatGPT: the largest ecosystem of third-party connectors and apps (Canva, Spotify, Microsoft 365, Google Drive, Slack, GitHub, Figma), which is useful if your small business already uses several of these tools.
- Gemini: the most seamless integration if your small or medium-sized business is already using Google Workspace (Gmail, Docs, Sheets)—AI appears directly within the tools your teams already use, without changing the interface.
- Mistral / Vibe: the best balance of autonomy and cost for a French SME, with support and documentation in French, and a competitive API for integrating AI into business software (see our AI use cases).
Which assistant should you choose for your small business?
There is no one-size-fits-all solution; the right choice depends on your existing ecosystem and your priorities:
- If you're already using Microsoft 365, start by evaluating Copilot before adding another AI subscription. Our Microsoft Copilot guide for small and medium-sized businesses details pricing, reviews, and ROI.
- If you're already using Google Workspace, Gemini is likely already included in your subscription at no additional cost.
- Sovereignty and the GDPR are your top priorities: Mistral is the only one of the four solutions designed with this in mind from the very beginning.
- Do you have complex, repetitive tasks to automate on your files (sorting documents, preparing reports from multiple sources, coding)? Claude Cowork is designed specifically for this use case.
- Are you looking for the widest selection of third-party integrations? ChatGPT has the most extensive ecosystem of apps to date.
In practice, many small and medium-sized businesses end up combining two tools: the one already included in their office suite for everyday use, and a second tool designed for a specific use case (sovereignty, code, automation).
How IT Systèmes Helps You Choose
IT Systèmes is a French IT service provider that has been supporting small and medium-sized businesses and mid-market companies for over 15 years in their digital transformation projects, including the selection and deployment of artificial intelligence tools. Faced with four solutions that differ significantly in terms of data sovereignty, price, and integration, its Data & AI team audits your existing workflows, your office software ecosystem (Microsoft 365 or Google Workspace), and your GDPR compliance requirements before making any recommendations—to ensure you don’t end up paying for a tool that duplicates a subscription already included in your current suite. Its Consulting team can then manage the deployment, regardless of which assistant is selected.
Frequently asked questions
Is Claude Cowork a separate paid product? No. Cowork is a feature included in paid Claude subscriptions (Pro starting at $17/month, Team starting at $20/user/month) and in the Max and Enterprise plans. There is no standalone "Cowork" subscription.
Which AI solution is the most GDPR-compliant for a French SME? Based on publicly available information, Mistral is the only one of the four solutions to host data natively in France/the EU across all its plans. For ChatGPT, data residency within the EU is guaranteed only on the Enterprise plan. For Claude and Gemini, we did not find an equivalent commitment to EU data residency on their standard plans: please check directly with the providers based on your specific situation.
Do you have to pay to use these AI tools in a business setting? All four offer a free plan, but with usage limits that make regular professional use impractical without upgrading to an individual or team paid plan.
Can an SME use several of these AI tools at the same time? Yes, and it’s common: many companies use the AI already included in their office suites (Copilot with Microsoft 365, Gemini with Google Workspace) for everyday tasks, and a second, specialized tool (Mistral for data sovereignty, Claude Cowork for automating complex tasks) for specific needs.
Do these price comparisons remain valid over time? No: the four providers update their pricing tables several times a year. Always check the current rates on the provider’s official website before committing to a plan, especially for team and enterprise plans, which are billed to the company headquarters and are therefore subject to price increases.
In a nutshell
In 2026, the choice between Claude (Cowork), ChatGPT, Gemini, and Mistral for a French SME will depend less on the raw quality of the responses—all four are capable of handling most common tasks—and more on three concrete criteria: the existing office software ecosystem, the level of assurance regarding data residency, and the priority use case (general conversation, agent-based automation, or integration into a business tool).
Official sources: Claude — Maps & Rates, Claude Cowork, ChatGPT — Pricing, Google Gemini — Subscriptions, Mistral AI — Pricing.
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