Perplexity
perplexity.aiAsk a question, get an answer with cited sources — a smarter search engine.
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Best AI tools for research & search
Find answers with sources, dig into academic papers, or ask questions about your own documents.
9 tools · last verified Oct 18, 2026
Quick answer
- Perplexity — Ask a question, get an answer with cited sources — a smarter search engine.
- Gemini Notebook (formerly NotebookLM) — Upload your own sources and get grounded answers, audio summaries and quizzes.
- Consensus — Ask a science question and see what peer-reviewed studies say.
Gemini Notebook (formerly NotebookLM)
notebook.googleUpload your own sources and get grounded answers, audio summaries and quizzes.
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Consensus
consensus.appAsk a science question and see what peer-reviewed studies say.
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Kagi
kagi.comPaid, ad-free search engine with optional AI — for people tired of cluttered results.
PaidEasy
Starter $5/mo (300 searches)
Elicit
elicit.comBuilt for research: finds and summarizes academic papers for you.
Free planSome learning
Free to try; Plus $11/user/mo billed yearly
ChatGPT
chatgpt.comThe default first AI to try: one chat box for questions, writing, images and code.
Free planEasy
Free plan; paid plans — see site
Google Gemini
gemini.google.comBest if you live in Google apps (Gmail, Docs, Drive) and want an assistant that fits in.
Free planEasy
Free with a Google account; paid plans from $4.99/mo
Grok
grok.comHandy when you want quick answers that lean on what is happening right now on X and the web.
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Hugging Face
huggingface.coThe home of open AI models and demos — where builders find and share models.
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