The question we get most often from business owners who are just getting started with GenAI is some version of: "Which one should I use?" And the honest answer is that it depends on what you're trying to do.
Most coverage of these tools spends a lot of time on benchmark scores and technical capabilities. That's not very useful if you're running a 20-person business and you just want to know which tool will help you write better proposals or analyze your customer feedback faster. So here's a practical breakdown.
ChatGPT
Made by: OpenAI. The one that started the mainstream conversation about GenAI.
ChatGPT is the most widely used and has the biggest ecosystem around it. There are thousands of plugins, integrations, and third-party tools built on top of it. If your team is new to GenAI and you want something with a lot of tutorials, community support, and documentation, ChatGPT is a reasonable starting point.
The GPT-4 and GPT-4o models are genuinely capable across most business tasks: drafting, summarizing, answering questions, light analysis, image generation if you need it. The interface is familiar and straightforward.
Best fit for: Teams that want broad capability, access to a large plugin ecosystem, and image generation in the same tool.
Watch out for: Quality can vary depending on which model version you're using. The free tier runs on older models. And the output can feel a little generic if you don't put effort into your prompts.
Claude
Made by: Anthropic. Built with a strong focus on being helpful without being reckless.
Claude tends to produce longer, more thoughtful, better-structured responses than the other two. It's particularly good at tasks that involve reading and working with large amounts of text, analyzing documents, writing in a specific tone, and anything that requires nuanced judgment rather than just pattern-matching.
If you need something to read a long contract and pull out the key risks, or to take a transcript from a customer interview and synthesize it into themes, Claude is usually the best choice in our experience.
Best fit for: Businesses that work heavily with text, documents, and analysis. Also strong for tasks where accuracy and thoughtfulness matter more than speed.
Watch out for: It doesn't generate images. And it can occasionally be more cautious than you'd like when dealing with sensitive business topics, though this has improved significantly.
Microsoft Copilot
Made by: Microsoft, built on OpenAI models.
Copilot's biggest advantage has nothing to do with the underlying AI. It's the integration. If your business runs on Microsoft 365, Copilot lives inside Word, Excel, Outlook, Teams, and PowerPoint. That context-awareness is genuinely useful. It can draft an email using information from a Teams meeting. It can summarize a document without you having to copy and paste anything.
For businesses already deep in the Microsoft ecosystem, Copilot is worth evaluating seriously. The friction is low because the tool is already where your work lives.
Best fit for: Teams that are already using Microsoft 365 and want AI that works inside the tools they already use every day.
Watch out for: The pricing is higher than the other two on a per-seat basis. And if you're not already in the Microsoft ecosystem, the integration advantage disappears entirely.
So which one should you use?
Here's the simple version:
- If you want the biggest ecosystem and broadest general capability, start with ChatGPT.
- If your work involves a lot of reading, writing, and analysis, try Claude.
- If your team lives in Microsoft 365, seriously evaluate Copilot.
The good news is that none of these are expensive to try. ChatGPT and Claude both have free tiers. Copilot has a free web version separate from the paid Microsoft 365 integration. You can spend a week with each of them before committing to anything.
The bigger mistake we see isn't picking the wrong tool. It's picking the right tool and then using it the wrong way. All three are only as useful as the quality of the prompts you give them.