Which AI should you use?

ChatGPT, Claude, Gemini and Perplexity are all genuinely capable assistants, and any of them can handle the vast majority of everyday questions. So the useful question isn't "which one is best?" — there's no single winner — but "which one fits this task?" Each has a slightly different personality and a few things it's especially good at. Once you know those differences, choosing takes a second, and you'll often reach for more than one. Here's an honest, hype-free rundown as things stand in 2026.

ChatGPT

ChatGPT from OpenAI is the versatile all-rounder and the assistant most people meet first. It's a strong generalist across writing, brainstorming, explaining, coding and quick everyday help, and it sits inside a large ecosystem — voice conversations, image generation and understanding, file uploads and a big library of custom GPTs. If you want one dependable assistant for a bit of everything, or you like switching between typing, talking and images in the same place, ChatGPT is a safe default that rarely leaves you stuck. It's also the one most likely to have the newest consumer feature first, which makes it a good place to start if you're new to AI and just want something that works.

Claude

Claude from Anthropic is a favourite for anything involving long documents and careful writing. It handles large amounts of pasted text well, so it's well suited to summarising reports, analysing contracts, or working through a long thread of material in one go. Many people also prefer its writing and editing — it tends to produce natural, considered prose and is comfortable with nuance and step-by-step reasoning. It's a strong coding companion too. If your work is reading, writing and thinking through detail, Claude is often the most comfortable fit. People who write for a living — editors, researchers, developers working through a knotty problem — tend to gravitate to it once they've tried it on real material.

Gemini

Gemini from Google is the natural choice if you live in Google Workspace. It connects to Gmail, Docs, Drive and the rest, so it can draft in a document, help with your inbox, or pull from files you already have. Backed by Google's search, it's also good at fresh, up-to-date answers, and it handles large amounts of context. If you're already in the Google ecosystem and want an assistant that's right there in the tools you use every day, Gemini is hard to beat.

Perplexity

Perplexity is built for research. Rather than answering purely from memory, it searches the live web and returns answers with inline citations you can click and check. That makes it the go-to when you need current information and want to see where each claim came from — comparing products, checking recent news, or getting a quick briefing on an unfamiliar topic with sources attached. When "show me where this comes from" matters as much as the answer itself, Perplexity is the specialist. It's less of an all-purpose chat companion and more of a research tool, and that focus is exactly why it's worth keeping in your kit alongside a general assistant.

How to choose

Match the assistant to what you actually need. These are rules of thumb, not hard rules — the tools overlap heavily and any of them will make a decent attempt at all of it:

• Need cited research or current facts → Perplexity.
• Drafting or analysing a long document → Claude.
• Working inside Gmail, Docs or Drive → Gemini.
• A general everyday assistant for a bit of everything → ChatGPT.
• Careful writing, editing or nuanced reasoning → Claude, with ChatGPT a close second.
• Voice, images and a big feature ecosystem → ChatGPT.

Notice how much these overlap. All four can research, write and code; the labels above just point to where each tends to feel strongest. If your task doesn't map neatly onto one, don't overthink it — pick whichever you already have open.

Just use more than one

Here's the practical takeaway: you don't have to choose just one. All four offer capable free tiers, so the easiest way to find your favourite is to keep two open and paste the same question into both. You'll quickly notice which one's tone and answers you prefer for different jobs — and for anything important, a second opinion from a different model is a genuinely useful check. Comparing takes seconds and costs nothing.

One last thing worth more than the choice of model: how you ask. A clear, specific prompt gets a better answer out of every one of these assistants than a vague one gets out of the "best" model. If you only improve one habit, make it that. Grab our prompt packs for ChatGPT, Claude, Gemini and Perplexity, and read our guide on how to write better AI prompts.