PerplexityTop pick
AI answer engine with real-time, cited web results
56 tools · updated Nov 2026
Best AI Research & Search Tools in 2026
AI search engines, academic research tools and document Q&A. Our top picks are Perplexity, NotebookLM and Elicit.
NotebookLM
Google's AI research notebook grounded in your sources
Elicit
AI research assistant for finding and analysing papers
Consensus
AI search engine that answers questions from scientific papers
Semantic Scholar
Free AI-powered academic search from the Allen Institute
Kagi
Ad-free paid search engine with built-in AI assistant
Adobe Acrobat AI Assistant
Generative AI for summarising and querying PDFs in Acrobat
SciSpace
All-in-one AI platform to search, read and write research
Genspark
AI super-agent for research, slides, sheets and more
ResearchRabbit
Discover and visualise related research papers
Scite
See how research has been cited with Smart Citations
ChatPDF
Chat with any PDF and get cited answers
Brave Search
Independent private search engine with AI answers
Connected Papers
Visual graphs of related academic papers
Undermind
Deep research agent for finding scientific literature
Litmaps
Literature mapping and discovery tool for researchers
Humata
Ask questions across your documents with AI
STORM
Stanford's open-source AI that writes Wikipedia-style reports
AskYourPDF
Chat with PDFs and research papers using AI
Scholarcy
AI summariser that turns papers into flashcards
PDF.ai
Chat with PDF documents and get instant answers
ChatGPT
OpenAI's all-purpose AI assistant for chat, writing and analysis
Claude
Anthropic's AI assistant known for writing, reasoning and coding
Google Gemini
Google's multimodal AI assistant connected to Search and Workspace
Harvey
Generative AI platform built for elite law firms
CoCounsel
Thomson Reuters' AI legal assistant grounded in Westlaw
AlphaSense
AI market intelligence and search for professionals
OpenEvidence
AI medical search for verified clinicians
Lexis+ AI
LexisNexis generative AI for research and drafting
Microsoft Copilot
Microsoft's AI companion across Windows, Edge and Microsoft 365
Legora
Collaborative AI workspace for lawyers
Hebbia
AI agents for analysing large document sets
Grok
xAI's assistant with real-time access to X (Twitter) data
Glean
Enterprise AI search and agents across company knowledge
Wolfram|Alpha
Computational knowledge engine for maths and science
Vincent AI by vLex
Multi-jurisdiction AI legal research assistant
Julius AI
Chat with your data to analyse and visualise it
Manus
General-purpose autonomous AI agent
Wondershare PDFelement
AI PDF editor that summarises, translates and edits documents
Mistral Le Chat
Mistral AI's fast, European-built AI assistant
Fiscal.ai
AI-powered stock research terminal
Rogo
Generative AI analyst for investment banks
Kimi
Moonshot AI's assistant known for long context and agentic research
Wordtune
AI rewriting assistant from AI21 Labs
Paxton
AI legal assistant for small and mid-size firms
Jenni AI
AI research writing assistant for essays and papers
You.com
AI search and research assistant with multiple models
Exploding Topics
Spot fast-growing trends before they take off
Paperpal
AI academic writing and language editing for researchers
Attest
Consumer research surveys with a global audience panel
Duck.ai
DuckDuckGo's private, anonymous chat with popular AI models
Heptabase
Visual whiteboards for learning and research
Wynter
B2B message testing with verified target buyers
Writefull
AI language feedback for academic writing, by Digital Science
GPT4All
Nomic's free app for private local AI chat with your documents
ERAG
Make your company documents answer questions
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Popular Research & Search comparisons
How to choose an AI research & search tool
Start with the job you need done most often, then compare the two or three tools that specialise in it. Use the filters above to narrow by pricing and platform, and check whether a free plan or trial lets you test on your own work before paying.
Our scores combine output quality, ease of use, features and value for money. Read how we review tools for the full method.