The best free starting point for research. Answers your question directly and cites real sources on every claim, with live web search and follow-up questions in threads. Often beats Google when you want to understand a topic with sources you can verify.
Searches over 200 million peer-reviewed papers and shows you what the scientific literature actually says on a question, with a consensus view across studies. The free plan gives you a monthly allowance of searches. Excellent for evidence-based answers.
A research assistant built for literature reviews. Finds and summarises relevant academic papers and can extract key data tables from them. The free plan limits results per search but is genuinely useful for graduate students and researchers.
Upload your own documents, papers, or notes and ask questions grounded only in those sources, which keeps answers accurate. It can even turn your material into an audio overview. A free standout for understanding large documents quickly.
Upload a research paper, highlight any confusing section, and get a plain-language explanation. Ideal for students and early researchers tackling dense academic writing. Free to use with an account.
Builds a visual graph of how papers relate to each other, so you can see the key works around a topic and find important papers you might have missed. The free plan includes a monthly number of graphs. A great citation and discovery tool.
Summarises research papers into structured bullet points and flashcards, including the methodology and findings. A browser extension works on papers you find online. Useful for processing many papers quickly for a course or assignment.
A computational knowledge engine that gives reliable answers for maths, science, and data queries, often with step-by-step working. Indispensable for STEM research and study where you need factual, computed results rather than a chatbot guess.
A free Google app that lets students photograph a question and get step-by-step explanations across many subjects. Great for quick homework research and understanding a concept from your phone.