Free AI tools for research
AI tools that search, read sources and hand back a cited answer or report. 2 tools we covered, newest first.
- Perplexity Deep Research
You ask one hard research question.
Tool of the Week · last covered 13 Jun 2026
- NotebookLM
NotebookLM is Google's research assistant that reads your own documents (reports, PDFs, transcripts, web pages) and lets you ask questions, generate summaries, and turn the pile into a podcast-style audio rundown or a set of narrated slides.
Tool of the Week · last covered 30 May 2026
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