What you can do with it
Consensus searches academic literature and connects answers to published research papers. It is useful for exploring what studies say about a question, tracing citations, and comparing evidence across a field. Basic paper search is freely available, while deeper synthesis, study snapshots, and more intensive research modes have separate usage allowances.
What’s included for free
The Free tier includes unlimited paper searches, limited Pro messages, 3 Deep reviews per month, and 10 Study Snapshots per month. Paid subscriptions expand the advanced features.
Free tiers can restrict usage or features. Paid upgrades are separate.
Official sources
The official pages used to check this listing.
Free planPerplexity
Perplexity combines web search with conversational answers and source links, helping you investigate a question and then ask follow-ups. It is useful for orientation on unfamiliar topics and collecting starting points for further reading. Its free plan covers everyday searching, while advanced research and premium model access have much tighter restrictions.
Free accessAndi
Andi combines conversational search with web results, giving you a direct answer and links to explore further. Its public search experience also supports reading, summarizing, and explaining material. It is a convenient option for people who want AI-assisted search without creating an account, with a separate product for developers using its API.
Free accessAsk Brave
Ask Brave brings an AI conversation interface into Brave Search, combining synthesized answers with webpages and other search results. You can start from a normal search and continue in the Ask view. It works in any supported browser, so you can try the service without installing the Brave browser first.