Which AI tool should I use?

A friend leans over at dinner and asks which chatbot you use, as if there were one right answer. Plenty of people wonder the same thing. In Google's Year in Search for 2025, the top trending search in the world was Gemini, Google's own artificial intelligence (AI) chatbot. People want to know which tool is the good one. Under that question sits a simpler one: what are you trying to get done?¹

The big chatbots, such as ChatGPT, Claude, and Gemini, are built the same basic way. Each runs on a large language model, a program trained on huge amounts of text to predict what comes next. So they do many of the same jobs: drafting, summarizing, explaining, and answering questions. Stanford's AI Index for 2026 found the top models closer together than ever. In March 2026, models from four companies sat within 25 points of each other on a public leaderboard where people vote for the answer they prefer.²

So start from what you want to do, because different jobs lean on different features.

• Writing and editing: how well it follows your tone, and whether it can read a document you give it.
• Research: whether it searches the web and shows links to its sources.
• Pictures: whether it can make or edit images.
• Code: whether it can run the code it writes, or work inside your files.

Most of the big tools offer some of each, and the details shift with every update. Your task tells you which features to look at first.

The best tool may be the one you'll open without thinking. Many people already have an assistant built into their email, their documents, or their phone. A tool that sits inside the app you use all day can beat a stronger one you have to remember to visit. And if your workplace already provides one, that's usually the place to begin, because someone there has already looked at its terms.

Before you paste in anything personal or anything from work, look at the data settings. They differ between tools, and between plans of the same tool. OpenAI, for example, says it doesn't train its models on content from its business and enterprise plans by default, while people on personal plans make that choice in their settings. Other companies set their own rules. So a work account your employer pays for may be covered by quite different terms from the free app on your phone.³⁴

Instead of a ranking, try a test. Pick a real task from your week, like summarizing a long email thread or planning a trip. Give the same request, word for word, to two tools. Then compare. Which answer got the facts right? Which one needed less fixing? Which one sounded more like you? Ten minutes of that tells you more than a chart of scores, because it's your own work being tested.

Most of these tools have a free version. Paid plans usually add higher limits and newer models. The prices and plan names change often. So try the free version on your real task first. If you keep hitting a limit you care about, that's when paying might make sense. Which task from this week would you try first?