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Research AI apps

Platforms for deep research and literature work — AI that reads, cites, and synthesizes sources.

31 apps · researched & kept current by Claude Code

Filter & search these 31 apps
  • View Capitol AI details
    ResearchPAID

    Capitol AI

    Capitol AI

    Agentic AI platform for turning proprietary data into decision-grade artifacts.

    Capitol is an agentic AI platform that turns proprietary data and expert judgment into trusted, decision-grade artifacts — due-diligence reports, regulatory documentation, and executive briefings. Built for regulated, high-stakes institutions in financial services, professional services, and government, it runs entirely inside enterprise infrastructure with no data egress and keeps every output auditable. It is model-agnostic, working with whichever LLMs an organization approves, and exposes a web interface plus an API and SDK for builders.

    Sovereign, private-tenant hosting
    Enterprise-only; pricing not public
    • enterprise-ai
    • sovereign-ai
    • due-diligence
    • compliance
    • +1
  • View Cypris details
    ResearchPAID

    Cypris

    IP Web, Inc.

    AI R&D and innovation intelligence over patents and research.

    An enterprise R&D and innovation-intelligence platform that aggregates patents, scientific literature, market data, and grants into a searchable AI workspace. Built for research and IP teams doing technology scouting, competitive analysis, freedom-to-operate assessments, and landscape reports.

    Searches 500M+ patents and papers
    Enterprise pricing, not self-serve
    • research
    • patents
    • innovation
    • ip
    • +1
  • View Asta details
    ScienceFREEOSS

    Asta

    Ai2 (Allen Institute for AI)

    Open agentic research assistant for scientists, from Ai2.

    Asta is an open ecosystem of AI agents for science from the Allen Institute for AI (Ai2). The Asta assistant helps researchers find relevant papers, generate cited literature summaries, and (in beta) run basic data analyses, with planned hypothesis generation and experiment replication. It ships alongside AstaBench, a benchmark suite for evaluating scientific agents.

    Cited literature summaries with sources
    Data analysis is in limited beta
    • science
    • research
    • agent
    • literature
    • +1
  • View Causaly details
    SciencePAID

    Causaly

    Causaly

    Agentic AI for life-sciences R&D, grounded in a biomedical knowledge graph.

    Causaly is an agentic AI platform for life-sciences research and development that distills tens of millions of scientific publications and datasets into a high-precision biomedical knowledge graph, then lets domain-specific AI agents plan, search, reason, and synthesize evidence. Researchers use it to map biomarkers, molecular targets, and disease mechanisms and to move from hypothesis to evidence-backed decision in hours rather than weeks. It is sold to pharmaceutical and life-sciences enterprises.

    Distills tens of millions of publications
    Enterprise life-sciences focus only
    • life-sciences
    • drug-discovery
    • knowledge-graph
    • biomedical
  • View AnswerThis details
    ResearchFREEMIUM

    AnswerThis

    AnswerThis

    AI research assistant for citation-backed answers and literature reviews.

    AnswerThis searches academic literature and returns comprehensive answers with line-by-line citations linked back to the source papers. It drafts structured literature reviews, organizes a research library, and helps write research content grounded in verified sources rather than open-web text. A free tier covers everyday searching, with an Enterprise plan aimed at pharma, biotech, and medical-device teams.

    Drafts structured literature reviews
    Coverage limited to indexed literature
    • research
    • literature-review
    • citations
    • evidence-synthesis
  • View Anara details
    ResearchFREEMIUM

    Anara

    Anara (formerly Unriddle)

    AI research assistant for searching, reading, and writing across scientific papers.

    Anara builds a personal library from a researcher's uploaded PDFs and connected sources, then lets you search the literature, ask questions across documents with inline citations, and draft and cite papers. It searches PubMed, arXiv, and JSTOR directly and connects to Zotero, Mendeley, Notion, and cloud drives. A free plan covers core reading and search; paid Plus, Pro, and Max tiers raise limits and add team features.

    Inline citations across your library
    Coverage limited to indexed/uploaded sources
    • research
    • literature-review
    • citations
    • pdf-chat
    • +1
  • View Valyu details
    SearchPAID

    Valyu

    Valyu

    Real-time search and deep research API for AI agents.

    Valyu is a search and retrieval API built for AI agents and LLMs. Its DeepSearch returns full extracted, structured content — not just links — from the open web plus proprietary and paywalled sources like academic papers, regulatory filings, patents, and financial data. A separate DeepResearch API runs asynchronous, multi-step research across those sources and synthesizes the results into reports and structured data.

    Searches proprietary and paywalled sources
    No free tier
    • search-api
    • deep-research
    • rag
    • retrieval
    • +1
  • View Paperguide details
    ResearchFREEMIUM

    Paperguide

    Paperguide

    AI research assistant and reference manager for academics.

    Paperguide is an all-in-one academic research platform combining an AI assistant, reference manager, and chat-with-PDF in one workspace. It searches papers with real citations, runs literature-review workbooks, extracts data into tables, annotates PDFs, and drafts with an AI writer and plagiarism checker. Built for students, educators, and research teams, with a browser extension to save sources.

    Search, references, PDF chat, and writing in one tool
    AI credits cap monthly usage
    • academic-research
    • reference-manager
    • literature-review
    • chat-with-pdf
  • View Scholarcy details
    ResearchFREEMIUM

    Scholarcy

    Scholarcy

    AI that turns research papers into structured, referenced summary flashcards.

    Scholarcy reads full-length academic papers, articles, and book chapters and breaks them into interactive summary flashcards that surface the synopsis, key findings, methods, figures, tables, and references. It imports from PDFs, Google Drive, Zotero, and the web, and highlights cited claims so researchers can grasp a paper's core arguments quickly. A premium Scholarcy Library adds unlimited use plus saving, annotating, sharing, and exporting of flashcards.

    Structured flashcard summaries
    Free tier limited to ~1 summary/day
    • research
    • summarization
    • academic
    • flashcards
    • +1
  • View Scira details
    SearchFREEMIUMOpen core

    Scira

    Scira

    AI answer engine that searches the web and cites its sources.

    Scira (formerly MiniPerplx) is an open-source, AI-powered answer engine — a Perplexity alternative built on the Vercel AI SDK. It plans a query, retrieves from the web, and returns concise answers with inline citations, drawing on 60+ models including Grok, Claude, Gemini, GPT, and DeepSeek. The AGPL-3.0 code is self-hostable, and a hosted app at scira.ai offers a free tier plus a Pro plan with connectors, memory, and voice.

    Open source (AGPL-3.0), self-hostable
    Largely a solo/community project
    • ai-search
    • open-source
    • answer-engine
    • citations
    • +1
  • View Connected Papers details
    ResearchFREEMIUM

    Connected Papers

    Connected Papers

    Visual graphs that map the literature around any academic paper.

    Connected Papers builds an interactive similarity graph around a seed paper, clustering related work by how strongly papers share references and citations rather than direct links alone. Researchers use it to get up to speed on a field, find prior and derivative work a keyword search misses, and explore a visual map of a research area. The free tier allows a handful of graphs per month, with unlimited graphs on paid academic and business plans.

    Visual map of a research area
    Free tier capped at 5 graphs/month
    • literature-review
    • citation-graph
    • academic-search
    • research
    • +1
  • View Potato details
    ScienceFREEMIUM

    Potato

    Potato

    AI co-scientist for designing and running experiments.

    Potato is an AI platform for life-science researchers that pairs literature search and synthesis with an AI co-scientist, 'Tater,' to plan and run experiments end to end. It can generate hypotheses and protocols, translate them into robotic scripts, and analyze results, with human review at each step. It's used in academic and biotech labs and offers free and paid plans.

    Plans and runs the full experiment loop
    Early-stage, small seed funding
    • ai-co-scientist
    • lab-automation
    • protocols
    • life-sciences
  • View FutureHouse details
    ScienceFREE

    FutureHouse

    FutureHouse

    AI agents that automate scientific literature research and discovery.

    FutureHouse is a nonprofit AI-for-science lab building AI agents that automate steps of the research process. Its free FutureHouse Platform exposes specialized agents — including Crow, Falcon, Owl, and Phoenix — for literature search, synthesis, and chemistry, plus Kosmos, an 'AI Scientist' that runs autonomous multi-step analyses. The agents are available through a web app and an open API.

    Free to use
    Narrow to research workflows
    • research
    • science-agents
    • literature
    • nonprofit
  • View ResearchRabbit details
    ResearchFREEMIUM

    ResearchRabbit

    ResearchRabbit

    Citation-based literature mapping that visualizes how papers connect.

    A literature-discovery tool for researchers that maps the scholarly landscape instead of returning flat result lists. Start from one or more "seed" papers and it surfaces related work, citing/cited papers, and relevant authors as an interactive network — drawing on 270M+ papers — so connections appear even when articles don't cite each other directly. Collections sync to Zotero and can trigger new-paper alerts.

    Free Forever tier is genuinely usable
    Not an LLM Q&A or summarizer
    • literature-review
    • research
    • citations
    • academia
    • +1
  • View Semantic Scholar details
    ResearchFREE

    Semantic Scholar

    Allen Institute for AI

    AI-powered academic search with one-sentence TLDR paper summaries.

    Semantic Scholar is a free scholarly search engine from the Allen Institute for AI that indexes over 200 million papers across every field of science and uses NLP to surface the most relevant and influential work. Its TLDR feature generates ultra-short, one-sentence summaries of papers, and the Semantic Reader adds inline citation cards and skimming highlights to PDFs. An open API and adaptive Research Feeds let developers and researchers build on the same corpus.

    TLDR one-sentence summaries for many papers
    TLDR coverage skews to CS, bio, and medicine
    • academic-search
    • literature-review
    • paper-summaries
    • citations
  • View Edison Scientific details
    ResearchFREEMIUM

    Edison Scientific

    Edison Scientific

    Kosmos, the AI scientist — autonomous literature and data-analysis research runs.

    The for-profit spinout commercializing nonprofit lab FutureHouse's scientific agents. Its flagship Kosmos runs autonomous research campaigns — iterating data analysis, literature search, and hypothesis generation — and returns fully cited research reports. The Edison Platform took over FutureHouse's hosted literature agents, with the first Kosmos runs free for academic researchers.

    Every finding linked to code or citations
    $200 per Kosmos run after the free quota
    • ai-scientist
    • literature-review
    • biology
    • drug-discovery
  • View Opera Neon details
    AssistantPAID

    Opera Neon

    Opera

    Opera's subscription agentic browser — built to act, not just browse.

    An agentic AI browser from Opera built around three agents: Neon Chat answers with page and history context, Do executes tasks directly on web pages, and Make generates mini-apps, sites, and documents. Tasks group related tabs and chats into workspaces, Cards package repeatable prompt workflows, and the ODRA agent compiles sourced deep-research reports. Opened to the public in December 2025 after an invite-only waitlist.

    Chat, Do, and Make agents built in
    Subscription-only — no free tier
    • browser
    • agentic
    • multi-model
    • deep-research
  • View Scite details
    ResearchFREEMIUM

    Scite

    Scite (a Research Solutions company)

    AI research assistant built on citation-context Smart Citations.

    Scite helps researchers find and evaluate scientific literature using Smart Citations — citations classified by whether they support, contrast, or simply mention a paper's claims. Beyond search, its AI Assistant answers research questions with grounded, cited references, and reliability dashboards flag retracted or heavily disputed work. Available on the web and via browser and reference-manager plugins.

    Supporting/contrasting citation context
    Citation-context focus, narrower search
    • research
    • citations
    • academic-search
    • literature-review
  • View Liner details
    SearchFREEMIUM

    Liner

    Liner

    AI search and research copilot with cited answers.

    An AI search and research assistant that returns cited, fact-checked answers across the web, YouTube, and PDFs, with dedicated modes for academic literature review (Liner Scholar) and professional writing (Liner Write). It grew out of a popular web-highlighting tool and now spans browser, mobile, desktop, and a browser extension. The free tier covers everyday search; Pro unlocks more models, file uploads, and unlimited copilot use.

    Cited, fact-checked answers
    Best features behind Pro
    • search
    • research
    • citations
    • academic
    • +1
  • View Parallel details
    SearchFREEMIUM

    Parallel

    Parallel Web Systems

    High-accuracy web search and research APIs for AI agents.

    Parallel gives AI agents programmatic access to the web through a suite of APIs — a Search API, a Task API for structured extraction, and a Deep Research API for multi-hop questions — all served from its own proprietary web index and retrieval stack. It optimizes for high-signal, low-noise context fed straight into a model rather than ranking URLs for human clicks. Pricing is per request (the Search API starts at $0.005 per call) with a free allotment to start.

    Free allotment to start
    API-only; no end-user search app
    • web-search
    • agents
    • research-api
    • retrieval
    • +1
  • View Hebbia details
    FinancePAID

    Hebbia

    Hebbia

    Enterprise AI that analyzes vast document sets for finance and law.

    Hebbia is an enterprise AI platform that lets analysts ask complex, multi-step questions across huge libraries of filings, transcripts, and internal documents. Its Matrix interface returns answers in a spreadsheet-style grid, with each cell traceable back to its source. It is used heavily across investment banking, private equity, and legal research.

    Spreadsheet-grid answers across docs
    No public pricing, sales-only
    • enterprise
    • document-analysis
    • finance
    • research
  • View Undermind details
    ResearchFREEMIUM

    Undermind

    Undermind

    AI deep-research agent that finds every relevant paper on a scientific question.

    A research-discovery platform that takes a natural-language question and autonomously searches, reads, and evaluates hundreds of academic papers — following citation trails and explaining each result's relevance, mimicking how an expert runs a literature review. Built by MIT quantum-physics PhDs and backed by Y Combinator; used by researchers at MIT, Harvard, and Caltech.

    Exhaustive citation-trail search
    Slow — minutes per query
    • research
    • literature-search
    • science
    • deep-research
  • View Elicit details
    ResearchFREEMIUM

    Elicit

    Elicit (formerly Ought)

    AI research assistant for literature review and evidence synthesis.

    Searches, summarizes, and extracts structured data across 125M+ academic papers, with sentence-level citations. Goes beyond chat-over-papers with a guided systematic-review workflow covering search, screening, extraction, and report synthesis. A free Basic plan offers unlimited search and summaries; paid tiers add data-extraction volume and the review pipeline.

    Search, screen, extract, synthesize in one flow
    No PICO framework or Boolean operators
    • research
    • literature-review
    • systematic-review
    • citations
  • View Consensus details
    ResearchFREEMIUM

    Consensus

    Consensus

    AI search over peer-reviewed research papers, with inline citations.

    An academic search engine that runs natural-language questions against a corpus of more than 200 million peer-reviewed papers and synthesizes the findings with inline citations. Its Consensus Meter aggregates how much the studies agree or disagree, and a copilot helps draft literature reviews. Aimed at researchers, students, and clinicians.

    200M+ peer-reviewed corpus
    Best answers behind paid tier
    • research
    • academic-search
    • citations
    • literature-review
  • View You.com details
    SearchFREEMIUM

    You.com

    You.com

    Multi-model AI search and enterprise research agents.

    You.com is an AI search and answers product offering multi-model chat over OpenAI, Anthropic, and Google models on web and mobile. It has shifted toward enterprise with ARI, a research agent that synthesizes cited reports across hundreds of sources, alongside Search and Research APIs for developers.

    Multi-model chat (OpenAI, Anthropic, Google)
    Consumer focus de-emphasized
    • ai-search
    • research-agent
    • multi-model
    • api
  • View SciSpace details
    ResearchFREEMIUM

    SciSpace

    SciSpace

    AI research assistant: search, read, and review the literature.

    AI workspace for academics that searches a corpus of 280M+ papers, runs literature reviews, and answers questions over PDFs with citations. Adds writing aids like a paraphraser and citation generator, plus an agentic 'Deep Review' literature search introduced in 2025. Free Basic tier with paid upgrades.

    280M+ paper corpus
    Undisclosed underlying models
    • research
    • literature-review
    • papers
    • citations
    • +1
  • View NotebookLM details
    ResearchFREEMIUM

    NotebookLM

    Google

    Grounded research notebook — chat your sources, get Audio Overviews.

    Google's source-grounded research tool — upload docs, PDFs, and links, then ask questions answered only from your material, with citations and shareable Audio Overviews. Powered by Gemini.

    Source-grounded, cited answers
    Limited to material you upload
    • research
    • rag
    • citations
    • audio-overview
  • View Google AI Studio details
    ResearchFREE

    Google AI Studio

    Google

    Prototype with Gemini — prompts, multimodal, and instant API keys.

    Google's free playground for building with Gemini — prompt design, multimodal input, structured output, and one-click export to API code. The fastest way to start building on Gemini.

    Free Gemini access, no commitment
    Fine-tuning/governance need Vertex AI
    • prototyping
    • gemini
    • api
    • playground
  • View Khoj details
    ResearchFREEMIUMOpen core

    Khoj

    Khoj AI

    AI second brain that chats with your docs and the web, local or hosted.

    An open-source "AI second brain" for chatting with local or online models, searching across your personal documents and the internet, building custom agents, and automating research. Self-host it on your own machine, or use plugins for Obsidian, Emacs, desktop, and mobile. Licensed AGPL-3.0; a paid managed cloud tier also exists, so it's freemium.

    AGPL-3.0 licensed, self-hostable
    Self-hosting takes setup effort
    • second-brain
    • rag
    • self-hosted
    • open-source
    • +1
  • View GPT Researcher details
    ResearchBYO KEYOSS

    GPT Researcher

    Assaf Elovic / Tavily

    Autonomous AI agent that runs deep multi-source web research and writes cited reports.

    An open-source autonomous research agent that plans a task, runs parallel multi-source web searches, validates sources, and synthesizes a cited report. It runs locally as a Python package, FastAPI server, or MCP server, and works with any LLM provider plus a search/retriever backend. Free and Apache-2.0 licensed — you only pay your own LLM and search-API costs.

    Apache-2.0, free to self-host
    Setup complexity for beginners
    • open-source
    • self-hosted
    • research
    • agent
    • +1
  • View Hugging Face details
    ResearchFREEMIUM

    Hugging Face

    Hugging Face

    Models, datasets, papers, spaces. The AI research commons.

    Source-of-truth for open-weights models and datasets. Daily-paper feed for tracking research; Spaces for trying ideas without setting up infra. The default home for any model not behind a paid API.

    Largest open model + dataset hub
    Hosting/inference quality varies by repo
    • models
    • datasets
    • papers
    • open-source