The 5 Best AI Chatbot Apps in 2026
AI is now part of everyday work: drafting text, summarising documents, writing code or settling a question on the spot. There is no single AI that wins at everything, only tools with different strengths. This guide compares the 5 best AI apps in 2026 so you can pick the one that fits how you work.
Top AI and Chatbot Apps
Conversational AI apps for drafting text, answering questions, analysing documents, writing code and working faster from your phone.
Top pick
ChatGPT
OpenAI · Free (with purchases) · 1.000M+
The most used
4.7
50.6M reviews
TopApps analysis
ChatGPT is the most widely used AI chatbot in the world, with a very complete free plan and real versatility for writing, coding and analysing images.
ChatGPT is the most widely used AI chatbot in the world, with hundreds of millions of users. It answers questions, drafts text, summarises documents, writes code and analyses images, and its free plan is unusually generous. Its versatility and huge user base have made it the default choice for everyday AI.
Pros
- The most widely used AI chatbot in the world
- Very capable free plan
- Analyses images, documents and voice
Cons
- Heavy use requires a Plus subscription
- It can get facts wrong (you have to check)
- The free plan has usage limits
Google Gemini
Google LLC · Free (with purchases) · 1.000M+
Best Google integration
4.6
38.5M reviews
TopApps analysis
Google Gemini plugs neatly into Gmail, Docs and Google Workspace, with a huge context window for long documents.
Google Gemini is Google's AI assistant, and it slots seamlessly into Gmail, Google Docs, Maps and the rest of the Google Workspace ecosystem. Its huge context window lets it work through very long documents, videos and images all at once. The best pick if you already live in Google apps and want AI built into them.
Pros
- Full integration with Gmail, Docs and Google Workspace
- Huge context window (handles long documents)
- Multimodal: text, image, video and audio
Cons
- The most advanced features require a Gemini Advanced subscription
- Less customisable than ChatGPT in some respects
- Requires a Google account
Microsoft Copilot
Microsoft Corporation · Free (with purchases) · 50M+
Best for working in Office
4.7
2.3M reviews
TopApps analysis
Microsoft Copilot is built directly into Word, Excel, PowerPoint and Teams, ideal for company environments running Microsoft 365.
Microsoft Copilot is the AI built for work, with direct integration into Word, Excel, PowerPoint, Outlook and Teams. If your day runs through Office 365, Copilot saves you steps: it summarises meetings, drafts emails and builds presentations without leaving the apps you already use. The best option for companies on Microsoft 365.
Pros
- Direct integration into Word, Excel, PowerPoint and Teams
- Summarises meetings and drafts emails automatically
- Ideal for corporate Microsoft 365 environments
Cons
- Full Office features require a business licence
- Less popular as a standalone chatbot than ChatGPT
- Performance varies depending on the Microsoft 365 plan
Claude by Anthropic
Anthropic · Free (with purchases) · 10M+
Best for coding
4.6
582K reviews
TopApps analysis
Claude, from Anthropic, stands out for the quality of its code and its handling of long documents, with careful, precise answers.
Claude is Anthropic's AI assistant, known for how well it handles coding, long-document analysis and reasoning through complex topics with careful, precise answers. It is the favourite of many developers and professionals who value accuracy over speed. There is a free plan and paid plans with more capacity.
Pros
- Excellent for coding and code analysis
- Careful answers with solid reasoning
- Very good at analysing long documents
Cons
- Fewer native integrations than Gemini or Copilot
- The free plan has usage limits
- Smaller plugin community than ChatGPT
Perplexity: Buscador con IA
PerplexityAI · Free (with purchases) · 100M+
Best for research
4.6
2.1M reviews
TopApps analysis
Perplexity links the sources behind every answer and searches the web in real time, so you can check where each claim comes from.
Perplexity sets itself apart from other assistants in one concrete way: every answer comes with numbered, linked sources, so you can check where each claim came from. It searches the web in real time, which spares it the stale knowledge cut-off of other models.
Pros
- Every answer links its sources, all verifiable
- Searches the web live, no stale data
- Genuinely useful for research and fact-checking
Cons
- Weaker than ChatGPT at creative tasks
- The sources it cites are not always good ones
- The advanced model needs a subscription
Frequently asked questions
What is the best free AI in 2026?
ChatGPT is the best free option for general use, with a genuinely capable no-cost plan. Google Gemini also offers a generous free tier, especially if you already live in Gmail or Google Docs. Claude and Copilot have free versions too, though with tighter usage limits than the other two.
Which AI is best for coding?
Claude, from Anthropic, is the favourite among many developers for the quality and precision of its code, especially on complex projects. ChatGPT is also very solid for coding and has the advantage of a huge community with examples and integrations. If you work inside the Microsoft ecosystem, Copilot plugs straight into your code editor.
ChatGPT, Gemini, Copilot, Claude or Perplexity: which should I choose?
It depends on your main use. ChatGPT is the most versatile and popular for day-to-day work. Gemini is best if you live inside Gmail, Docs and the rest of Google Workspace. Copilot is the practical one if your work runs through Word, Excel and Teams. Claude is the reference if you code or analyse long documents and value precision over speed. Perplexity is the one to use when you need sourced answers you can check.
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