ChatGPT, Claude, Gemini and DeepSeek can all write, summarise, analyse and code. For a business the real question is not which chatbot is smartest this month, but which one fits your work, your data rules and your systems. This guide compares them in plain terms and explains when a custom AI agent connected to your ERP or CRM is the better choice.
The short answer
- ChatGPT (OpenAI): the most widely used general assistant, with a large ecosystem of plugins, custom GPTs and integrations.
- Claude (Anthropic): known for long documents, careful writing and coding, and a strong focus on safety; popular with developers and teams working on large files.
- Gemini (Google): built into Google Workspace (Gmail, Docs, Sheets) and Android, a natural fit if your company runs on Google.
- Microsoft Copilot: built into Microsoft 365 (Outlook, Word, Excel, Teams), a natural fit if your company runs on Microsoft.
- DeepSeek: a Chinese AI lab whose open-weight models are capable and low-cost to run; its hosted app is operated from China, so check data rules before using it with business data.
All of them improve every few months, and rankings change. Pick on fit, data handling and integration rather than on a single benchmark.
How they compare for everyday business work
Writing and email
All five draft emails, proposals and posts well. Gemini and Copilot have the edge on convenience because they sit inside the mail and document tools your team already uses.
Long documents and contracts
Claude is often chosen for reading and comparing long documents such as contracts, tenders and policies. ChatGPT and Gemini also handle large files; test with your own documents.
Spreadsheets and reports
Copilot in Excel and Gemini in Sheets work directly on your files. ChatGPT and Claude can analyse uploaded spreadsheets and explain the results.
Coding
ChatGPT and Claude are widely used by developers; DeepSeek models are also strong at code and can be self-hosted.
Indian languages
All major assistants handle Hindi and several Indian languages. Quality varies by language and task, so test with real customer messages.
Data privacy: the question most businesses skip
Before your team pastes customer lists, prices or contracts into any AI tool, check three things: whether your data is used to train models, where it is stored, and who in your company can see it.
- Business plans: ChatGPT, Claude, Gemini and Copilot offer business or enterprise plans whose terms state that your data is not used for training by default. Free consumer apps usually have different terms.
- Data location: if you have customer or regulatory rules about where data is stored, check the region each provider uses. DeepSeek’s hosted service is operated from China, so many companies avoid it for business data; its open-weight models can instead be run on your own servers.
- Access control: decide who may use which tool, with which data, and keep a simple written policy.
Our responsible AI and security service helps companies set these rules before rolling AI out.
Chatbot or custom AI agent?
A chatbot answers what a person types. An AI agent does work inside your systems: it reads your orders, stock and invoices, takes action and reports back. For many businesses the bigger gains come from agents, because they remove repetitive work rather than just speeding up writing.
- Use a chatbot for: drafting, summarising, research, brainstorming and one-off analysis.
- Use an AI agent for: chasing overdue payments, flagging stock shortages, reading supplier invoices into your ERP, answering order-status questions on WhatsApp, or preparing daily MIS reports.
Agents can run on any of these models, and the model can be changed later without rebuilding the workflow. See AI agent development and AI workflow automation.
Using AI with your ERP
For manufacturers and distributors, AI is most useful when it can see live data: orders, stock, production, dispatch and payments. That is why we build AI agents directly into DotOne, our ERP for Indian businesses, and connect them to existing ERPs for companies that want to keep their current system.
Read more on AI-powered ERP or explore DotOne software.
How to choose in four steps
- List the tasks: write down the five tasks that take your team the most time each week.
- Check your data rules: decide which data may go into which tool, and on which plan.
- Test with real work: give two or three tools the same real tasks and compare the results.
- Decide chatbot or agent: if the task repeats and needs your system data, plan an agent instead of more copy-paste.
Not sure where to start? Our AI readiness assessment maps where AI will save the most time in your business, or talk to us.
Frequently asked questions
Which is better for business, ChatGPT or Claude?
Both are strong. ChatGPT has the largest ecosystem and integrations; Claude is often preferred for long documents, careful writing and coding. Test both on your real tasks and choose a business plan with clear data terms.
Is DeepSeek safe to use for business?
DeepSeek’s hosted app is operated from China, so many companies avoid sending business data to it. Its open-weight models can be run on your own servers, which keeps data in-house.
Should we use Microsoft Copilot or ChatGPT?
If your team works in Microsoft 365, Copilot is convenient because it works inside Outlook, Word, Excel and Teams. ChatGPT is a flexible general assistant. Many companies use one for documents and the other for broader tasks.
What is the difference between a chatbot and an AI agent?
A chatbot answers questions typed by a person. An AI agent connects to your systems, such as your ERP or CRM, and carries out tasks like chasing payments or updating records.
Can AI agents work with our existing ERP?
Yes. Agents can connect to most ERPs through APIs or data exports. TechDotBit builds agents for DotOne and for other ERPs.
Want to put this into practice?
Talk to our team about AI agents, ERP or custom software for your business.