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The best apps, tested by hand

AI assistants

Chat assistants and AI search. AI is also a tag on every other category, so you can find AI features wherever they help.

an AI that cites its sources

Our three picks

How we pick
1Best overall
ClaudeFree plan; Pro and Max plans

Anthropic's AI assistant, strong at writing, analysis and coding.

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2Strong alternative
ChatGPTFree plan; paid plans

OpenAI's general-purpose AI assistant with voice and images.

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3Also great
PerplexityFree; Pro subscription

AI search that answers with sources you can click.

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Good for

All 5 ai assistants apps

ChatGPTFree plan, Everywhere
OpenAI's general-purpose AI assistant with voice and images.
ClaudeFree plan, Everywhere
Anthropic's AI assistant, strong at writing, analysis and coding.
PerplexityFree plan, Everywhere
AI search that answers with sources you can click.
Google GeminiFree plan, iPhone, Android, Web
Google's AI assistant, built into Android and Google apps.
NotebookLMFree, Web, iPhone, Android
Upload your documents and ask questions answered only from them.

Read the full guides

Top 3

Top 3 AI apps for research

Answers with sources, answers from your own documents, and deep reading of long reports.

3 picks every Sunday. Nothing else.

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