Answer Engines
Explore 8 options alongside SciSpace (PubGenius), a product in Answer Engines.
Candidates share an existing guide group, a comparison, or specific tags within the same category. This shortlist is not a ranking or a test result.
Related: shares the task Research with citations, Questions over your own documents
Document chat with PDF-linked answers and a backend API.
Freemium
Pricing: The website lists a free allowance of 2 documents per day and a paid Plus upgrade. API file limits are separate from the website plan; check the relevant documentation.
This record was last reviewed on 2026-11-03.
Related: shares the task Research with citations, Questions over your own documents
Academic research workspace linking reading, writing and source-aware citations.
Freemium
Pricing: Free includes ten daily autocompletes and limited uploads, edits and chat. Plus and Pro increase allowances; document export and AI usage differ by tier and billing cycle.
This record was last reviewed on 2026-11-03.
Related: shares the task Research with citations, Questions over your own documents
Academic writing assistant for language, citations and submission preparation.
Freemium
Pricing: Official support documents 200 monthly language suggestions and up to five daily uses of AI features on Free. Paid subscriptions expand usage; current subscription amounts were not normalized, and institutional agreements are separate.
This record was last reviewed on 2026-11-03.
Related: shares the task Research with citations
AI research assistant that finds, screens, and summarizes academic papers to help answer research questions.
Freemium
Pricing: A free tier is available; paid plans add higher usage levels and advanced extraction.
This record was last reviewed on 2026-09-10.
Related: shares the task Research with citations
Research assistant and citation search with citation-context signals.
Paid
Pricing: Basic is advertised at USD 12 per month billed yearly, with a 7-day trial. This is an annual-billing rate, not a monthly-billed price. The trial FAQ says the selected subscription begins automatically unless cancelled.
This record was last reviewed on 2026-11-03.
Related: shares the task Research with citations
AI answer engine that finds and summarizes findings from peer-reviewed scientific research papers.
Freemium
Pricing: A free tier is available; paid plans add unlimited searches and advanced analysis features.
This record was last reviewed on 2026-09-10.
Related: shares the task Questions over your own documents
File-based AI questions and summaries with traceable citations.
Freemium
Pricing: The pricing page lists 60 free pages monthly. Expert is USD 9.99 per month with 500 included pages; additional pages cost USD 0.02 each. Team has different per-user pricing and permissions.
This record was last reviewed on 2026-11-03.
Related: shares the task Research with citations
AI search engine that returns direct, sourced answers to natural-language questions.
Free
Pricing: iAsk.Ai is free for standard use; the Pro subscription unlocks premium models, unlimited usage, and extra tools.
This record was last reviewed on 2026-09-10.