ChatGPT vs Claude vs Gemini: Which AI Assistant Should You Use?

ChatGPT, Claude and Gemini are the three general-purpose AI assistants most people choose between. All three can answer questions, write, summarise, analyse files and help with code. Their differences show up in the details: what each one is best at, which apps it connects to, and how it feels to work with every day.

Here is how they compare, and how to decide.

The short answer

• Choose ChatGPT if you want one assistant that does a bit of everything, including images and voice.
• Choose Claude if your work is mostly writing, long documents or coding.
• Choose Gemini if you live in Gmail, Google Docs and Drive.

Many people end up using two of them. The free tiers make it easy to test all three on your own tasks before paying for any.

The contenders

CChatGPTGeneral assistant for writing, analysis, images and voice.Freemium CClaudeAssistant built for long documents, writing and code.Freemium GGeminiGoogle's assistant, connected to Search and Workspace.Freemium

Writing

All three write competently. The differences are in tone and editing.

Claude is often preferred by writers for its natural voice and careful edits; it is good at following detailed style instructions and revising without losing what was good in a draft. ChatGPT is versatile and quick, and works well for short marketing copy, emails and brainstorming. Gemini is convenient for drafting directly in Gmail and Google Docs.

Pick for writing: Claude, with ChatGPT close behind.

Long documents and research

If you regularly work with long reports, contracts, transcripts or research papers, the ability to read a whole document and answer precise questions matters a lot.

Claude has a strong reputation for handling long material and keeping track of details across it. Gemini also has a large context window and connects to your Drive files. ChatGPT handles uploads well and can analyse data files, which helps with spreadsheets.

For questions about current events, an answer engine such as Perplexity is often better than any of the three, because it cites its sources by default.

Pick for documents: Claude or Gemini. Pick for spreadsheets: ChatGPT.

Coding

All three can write and explain code. Claude is widely used by developers and powers many coding tools; it is strong at understanding larger codebases and making careful changes. ChatGPT is a solid all-rounder for scripts and debugging. Gemini is improving quickly and integrates with Google's developer tools.

For serious coding, consider a dedicated tool such as Cursor or GitHub Copilot, which work inside your editor.

Pick for coding: Claude.

Images, voice and media

ChatGPT has the broadest set of extras: image generation and editing in the chat, and a polished voice mode for spoken conversation. Gemini is strong at understanding images and video you show it. Claude focuses on text, code and analysis, and creates documents, diagrams and small apps as artifacts rather than generating photos.

Pick for media: ChatGPT.

Integrations

This is often the deciding factor.

• Gemini works inside Gmail, Docs, Sheets and Drive.
• ChatGPT has the largest ecosystem of custom GPTs and works across web, desktop and mobile.
• Claude connects to many work tools and is popular inside companies for research and writing.

If your organisation uses Microsoft 365, also look at Microsoft Copilot, which works inside Word, Excel and Outlook.

Accuracy

All three can make mistakes and state wrong facts confidently. None should be trusted blindly for medical, legal or financial decisions. Ask for sources, check important claims, and be cautious with numbers.

How to decide in 15 minutes

1. Pick three tasks you do every week, such as an email, a document summary and a research question.
2. Give the exact same prompt to each assistant on its free plan.
3. Keep the one whose answers you would actually use with the fewest edits.

That simple test beats any feature list, because the best assistant is the one that fits your work.

Explore more options in the Chat & Assistants category.