Free AI Research Assistants

An answer engine that searches the web and writes a sourced answer with citations you can click through and check.

Upload your own documents and it becomes an AI assistant that answers only from those sources, and can generate study guides, summaries, and audio overviews from them.

Anthropic's AI assistant for writing, analysis, coding and research. There is a free plan with usage limits.

OpenAI's AI assistant for questions, writing, images and code. The free plan has usage limits.

Ask it a yes/no research question and it searches published papers to show what the scientific evidence actually says, with citations.

A free AI chat assistant from the Chinese lab DeepSeek, strong at math and code. Its privacy policy says data is stored on servers in China.

Ask a research question in plain English and get back a table of real papers, one row each, with the finding summarized.

Highlights and saves passages from web pages and YouTube transcripts, and will summarise a video from its transcript.

A self-hostable AI assistant that answers questions from your own notes and documents, or from the web. Open source with a hosted option.

Upload or open a research paper and highlight any confusing passage. It explains that section in plain language and answers questions about the PDF.