Best AI software 2026: which assistant should you pick?
An AI assistant (or LLM, Large Language Model) writes, summarises, codes, translates and answers your questions in plain language. In 2026, five players dominate the market. We compare them on what actually matters: answer quality, the free tier, subscription price, context size and where your data is hosted (EU sovereignty). Here is our selection, from the versatile all-rounder to the sovereign European alternative.
Our pick at a glance
Our pickChatGPT, the most versatile and best-equipped assistant (voice, image, web browsing, agents), with a solid free tier.
See ↓ Best for writing and codingClaude by Anthropic, the reference for long-form writing, reasoning and code, with a very large context window.
See ↓ Best ecosystemGemini by Google, a giant context window and native integration with Gmail, Docs and Android, plus a very generous free tier.
See ↓ Most sovereignLe Chat by Mistral, now Mistral Vibe, the French AI hosted in Europe, fast and GDPR-friendly.
See ↓ Best desktop integrationMicrosoft Copilot, the AI built into Word, Excel, Outlook and Teams for Microsoft 365 users.
See ↓At a glance
The best AI assistants compared
| Assistant | Rating | Free tier | Paid price | Context | Hosting | |
|---|---|---|---|---|---|---|
 ChatGPT Our pick | ★★★★½ 4.6 | ✓ (capped) | ~€23 | Very large | United States | See → |
 Claude Writing / code | ★★★★½ 4.5 | ✓ (capped) | ~€20 | ~1M tokens | United States | See → |
 Gemini | ★★★★☆ 4.3 | ✓ (generous) | ~€22 | Up to ~1M tokens | United States | See → |
 Le Chat EU | ★★★★☆ 4.2 | ✓ (limited use) | ~€18 | Large | Europe | See → |
 Microsoft Copilot | ★★★★☆ 4.1 | ✓ | ~€20 | Large | United States / Azure EU | See → |
Indicative prices for the consumer individual plan, incl. tax, recorded in July 2026 (ChatGPT Plus, Claude Pro, Google AI Pro, Le Chat Pro, Copilot Pro). Prices vary with local tax, the dollar-to-euro rate and the frequent grid changes on this market. Pro/Ultra plans at €200+/month and team/enterprise plans (on request) exist with every vendor. Context sizes are indicative and change with each new model.
Just want to try without paying?
All five assistants offer a free version. ChatGPT is still the most versatile place to start, with voice, image and web browsing even on the free tier (with caps). To choose by profile, our guide on how to choose AI software walks through the criteria.
The top in detail
Our top 5 AI assistants, analysed
ChatGPT (OpenAI)
The most versatile assistant for most use cases
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The most complete ecosystem: voice mode, image generation and reading, web browsing, file analysis and custom agents (GPTs).
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Top-tier answer quality across a very wide range of tasks (writing, code, summarising, brainstorming).
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Polished mobile and desktop apps, a huge community and an abundance of resources.
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Data processed in the United States: worth framing for sensitive professional use or strict GDPR requirements.
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Like any LLM, it can hallucinate (state a false fact confidently): always verify critical information.
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The high-end Pro plan (~€200/month) remains expensive for individual use.
Our verdict
ChatGPT takes our top spot because it does almost everything, and does it well: text, voice, image, web browsing and agents in a single, highly polished app. It is the default choice if you want one versatile tool. Its real limitation is privacy, with data processed in the United States that you need to frame for sensitive professional use.
Claude (Anthropic)
Best for long-form writing, reasoning and code
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One of the most natural writing styles on the market: ideal for articles, emails and long documents.
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Excellent performance on code and structured reasoning; holds up very well on large documents (context of around 200,000 tokens).
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Anthropic emphasises a “safe” approach and strong faithfulness to instructions.
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No native image generation, and fewer real-time tools than ChatGPT or Gemini.
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Hosted in the United States: the same GDPR caution as its American rivals.
Our verdict
Claude is our reference whenever you need to write long or code: its style is the most natural of the group and its reasoning holds up on large documents. On the other hand, it has no image generation and no voice mode, which makes it less versatile than ChatGPT for all-round use.
Gemini (Google)
Best for the Google ecosystem and very long documents
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One of the largest context windows on the market (up to around 1 million tokens): ideal for analysing big files, PDFs or videos.
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Native integration with Gmail, Docs, Sheets and Android: the AI shows up where you already work.
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One of the most generous free tiers, and a paid price that is often aggressive against the competition.
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Uneven quality depending on the task: it can hallucinate on precise facts despite access to Google Search.
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Google’s privacy policy and hosting outside the EU: worth assessing for sensitive professional data.
Our verdict
Gemini shines through its ecosystem and giant context window: if you live in Gmail, Docs and Android, the AI is already there, and you can feed it entire files. The trade-off is answer quality that is a little less consistent than ChatGPT or Claude, plus the privacy question specific to Google.
Looking for an AI hosted in Europe?
Le Chat by Mistral is the main sovereign alternative: French models, data hosted in Europe and GDPR compliance, at a price below the American giants.
Le Chat, now Mistral Vibe
The best sovereign AI, French and hosted in Europe
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Sovereignty: a French vendor, data hosted in Europe and compute infrastructure on the continent, a strong GDPR argument.
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High response speed and excellent European-language quality, with a Pro price below the American players.
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Renamed Mistral Vibe in 2026, with a coding agent in the terminal, VS Code and JetBrains included in the Pro plan.
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On the most complex reasoning tasks, it often stays a notch behind the best American models.
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A smaller integration ecosystem, and a rename to Mistral Vibe that muddies the signposting and makes finding help harder.
Our verdict
Le Chat is the obvious choice if data sovereignty matters: a French vendor, hosting in Europe and GDPR compliance, all at a price below the American giants. Renamed Mistral Vibe in 2026, it now ships a coding agent usable in the terminal and the editor, included in the Pro plan. It stays a notch behind on the most demanding reasoning and its integration ecosystem is younger, but for day-to-day use under GDPR, it is our European alternative.
Microsoft Copilot
Best for Microsoft 365 users
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Native integration in Word, Excel, PowerPoint, Outlook and Teams: the AI acts directly on your files.
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Built on OpenAI models, with an enterprise layer (data residency options on Azure EU for Copilot pro/business).
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Copilot Pro is bundled with a Microsoft 365 subscription for consumers: appealing if you already use Office.
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Outside office apps, the conversational experience is less rich and sometimes more restricted than ChatGPT.
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The value depends heavily on the Microsoft 365 ecosystem: little interest if you don’t use Office.
Our verdict
Copilot is mostly worth it for those who live in Microsoft 365: the AI acts directly in Word, Excel, Outlook and Teams, with data-residency options on Azure EU for enterprise. Outside office apps, the conversational experience trails ChatGPT, and the value collapses if you don’t use Office.
Our analysis
Comparison: answer quality, multimodality and privacy
Beyond price, three criteria separate these assistants day to day: answer quality, the breadth of modalities (text, image, voice, code) and, above all, where your data lives and how private it is, which is decisive as soon as you handle professional information. Here is the detailed comparison, based on our tests run in July 2026.
Our test method. The same sets of prompts (writing, PDF summarising, code, reasoning, data extraction) submitted to each assistant · blind evaluation of relevance and hallucination rate · verification of privacy options in each vendor’s official documentation.
Overall answer quality
Indicative overall score from our tests (relevance, reasoning, language quality, faithfulness to instructions). The gaps stay tight: all five models are very strong in 2026.
Score out of 5. The longer the bar, the better.
ChatGPTClaudeGeminiLe ChatCopilot- ChatGPT and Claude lead on raw answer quality and faithfulness to instructions, especially on complex tasks.
- Gemini impresses on very long documents but is more uneven on precise facts.
- Le Chat and Copilot follow closely for everyday use, each with a strong asset (sovereignty for one, office apps for the other).
Key takeaway. For pure quality on demanding tasks (long-form writing, code, reasoning), ChatGPT and Claude are the safest bets. See our full ChatGPT review for the details.
Supported modalities
A “multimodal” assistant is not limited to text: it can read and generate images, talk by voice, write and run code, or analyse your files. That is what separates a simple chatbot from a real copilot.
✓ available · ✗ absent or very limited, recorded in July 2026. Scroll the table if needed.
| Assistant | Text | Image generation | Voice | Code | File analysis |
|---|---|---|---|---|---|
| ChatGPT | ✓ | ✓ | ✓ | ✓ | ✓ |
| Claude | ✓ | ✗ | ✓ | ✓ | ✓ |
| Gemini | ✓ | ✓ | ✓ | ✓ | ✓ |
| Le Chat | ✓ | ✓ | ✗ | ✓ | ✓ |
| Microsoft Copilot | ✓ | ✓ | ✓ | ✓ | ✓ |
- ChatGPT, Gemini and Copilot cover every modality, voice included.
- Claude reads images but does not generate them and has no voice mode: it embraces a text-and-code positioning.
- Le Chat generates images and analyses documents, but still has no voice mode.
Key takeaway. For all-round use including voice and image, ChatGPT and Gemini are the most complete. For writing and coding, multimodality matters little, and Claude takes the lead again.
Ecosystem and integrations
An AI is all the more useful when it plugs into your tools: apps, extensions, an API for developers and custom agents (assistants configured for a specific task).
| Assistant | Apps | Office integrations | API / extensions | Custom agents |
|---|---|---|---|---|
| ChatGPT | Web, iOS, Android, desktop | Third-party connectors | ✓ (API + GPT Store) | GPTs |
| Claude | Web, iOS, Android, desktop | Via MCP / connectors | ✓ (API + MCP) | Projects |
| Gemini | Web, native Android, iOS | Gmail, Docs, Sheets, Drive | ✓ (API) | Gems |
| Le Chat | Web, iOS, Android | Limited connectors | ✓ (API) | Agents |
| Microsoft Copilot | Web, Windows, mobile | Word, Excel, Outlook, Teams | ✓ (Graph / M365) | Copilot Studio |
- Gemini and Copilot win on office integration: they live inside Google Workspace and Microsoft 365 respectively.
- ChatGPT offers the richest ecosystem of extensions (GPT Store, connectors, a very well documented API).
- Claude bets on the MCP standard to connect to your tools; Le Chat is younger on this front.
Hosting and data privacy
This is the decisive criterion for professional use. Where is your data processed? Can you opt out of it being reused for training? Is there an enterprise plan with data residency in the EU? Here is the state of play, to verify in each vendor’s up-to-date documentation before any sensitive use.
| Assistant | Hosting | Zone | Training opt-out | EU residency (enterprise) |
|---|---|---|---|---|
| ChatGPT | United States | Outside EU | ✓ (configurable) | ✓ (Enterprise / API) |
| Claude | United States | Outside EU | ✓ (API not trained by default) | ✓ (enterprise plans) |
| Gemini | United States | Outside EU | ✓ | ✓ (Workspace) |
| Le Chat | Europe | EU | ✓ | ✓ (sovereign) |
| Microsoft Copilot | Azure (EU option) | EU possible | ✓ | ✓ (EU Data Boundary) |
- Le Chat by Mistral is the only one hosted natively in Europe: it is the simplest answer to a strict GDPR requirement.
- Copilot offers EU data residency via Microsoft’s EU Data Boundary, useful for organisations already on Microsoft 365.
- ChatGPT, Claude and Gemini process most data in the United States, but offer enterprise options and a training opt-out to enable.
Sensitive data: the golden rule
Never hand strictly confidential data (health, HR, trade secrets) to the consumer version of an assistant. Use an enterprise plan with a contractual no-training commitment and, where possible, data residency in the EU. To understand the risks, see our explainer on what an LLM is and our guide to choosing AI software.
Which AI for which use case?
In short, here is our recommendation depending on what you put first:
| Your use case | Our pick | Why |
|---|---|---|
| Writing | Claude / ChatGPT | Most natural style and faithful to instructions |
| Coding | Claude | Reliable code and strong reasoning on large context |
| Research | Gemini / ChatGPT | Web browsing and a giant context for big files |
| Image / creative | ChatGPT / Gemini | Integrated, versatile image generation |
| Enterprise (sensitive data) | Le Chat / Copilot | EU hosting or data residency in Europe |
| Free use | Gemini / ChatGPT | The most generous and complete free tiers |
How we built this ranking
Each assistant is scored on six weighted axes: answer quality (relevance, reasoning, language, hallucination rate), multimodality (voice, image, web browsing, file analysis, agents), ecosystem and integrations (apps, API, office connectors), data privacy (location, GDPR compliance, sovereignty), ease of use and value for money (free tier, individual subscription, team and enterprise plans). We use these tools daily on concrete writing, summarising and coding tasks, and we re-score the ranking with every model release or pricing change, hence the update date at the top of the page. Find all our comparisons and guides on the AI hub.
A reminder that holds for all five: no AI assistant is 100% reliable. They can all produce hallucinations, meaning they state false information convincingly. Always verify facts, figures and quotes before reusing them, and never hand over strictly confidential data without checking the vendor’s retention policy. Before you commit, our guide to choosing AI software lays out the criteria.
Frequently asked questions
What is the best AI software in 2026?
For general use, ChatGPT is still the most versatile and best-equipped assistant (voice, image, web browsing, agents). For long-form writing and code, Claude by Anthropic is our reference. For very large documents and the Google ecosystem, Gemini stands out. And for an AI hosted in Europe, Le Chat by Mistral is the best sovereign option.
Which free AI should you choose?
All five assistants offer a free version. Gemini has one of the most generous, and ChatGPT is still the most complete for free (voice, image and web browsing with caps). Le Chat by Mistral, now Mistral Vibe, is free with caps on messages, web searches and coding sessions. Free versions often use slightly less powerful models and impose quotas that paid plans lift.
Which AI is the most GDPR-friendly and hosted in Europe?
Le Chat by Mistral is the reference on sovereignty: a French vendor, data hosted in Europe and compute infrastructure on the continent. ChatGPT, Claude and Gemini process most data in the United States. Microsoft Copilot offers data-residency options on Azure EU in its professional plans. For sensitive data, always check the retention policy and enterprise options.
How much does an AI subscription cost in 2026?
Consumer individual plans converge around €18 to €23/month incl. tax: roughly €23 for ChatGPT Plus, €20 for Claude Pro, €22 for Google AI Pro, €20 for Copilot Pro and €18 for Le Chat Pro (indicative, July 2026). Pro/Ultra plans at €200+/month and team and enterprise plans (per user) exist with every vendor. Prices move quickly on this market.
Can AI assistants get things wrong?
Yes. All LLMs can produce hallucinations, meaning false answers stated with confidence, and their knowledge has a cut-off date. Use them as a copilot, not as a source of authority: verify important facts, figures and quotes, especially in a professional or legal context.