Ai2 Asta
Pesquisa com IA
AI research assistant for finding papers and analyzing data
GrátisWeb
Melhores Ferramentas de pesquisa com IA (2026): nosso top 3 entre 28, em ordem
Em 6 de out. de 2026, nossa primeira escolha é Elicit (GPA de 2.4), depois ChatPDF e Semantic Scholar.
Classificado por ToolGPA em 6 de out. de 2026 · fichas verificadas até 9 de out. de 2026
Ferramentas de IA para encontrar, ler e resumir fontes, artigos acadêmicos e documentos.
Nosso top 3 de ferramentas de pesquisa com IA
These three do different jobs more than they compete. Elicit comes first for finding papers: its free plan has no cap on search, summaries or chat with papers. ChatPDF is second for asking questions of a document you already have. Semantic Scholar is third as the search engine with nothing to pay. Consensus narrowly missed: its free tier stops at 10 Pro messages and 3 Deep Searches a month, and its paid prices could not be confirmed. Anara answers across a whole library of files but has no Windows or Android app. ResearchRabbit maps how papers connect, free with unlimited searches.
1º lugar: Elicit
Plano gratuito · a partir de $49/mês
Para: Most people looking for papers on a research question
Elicit searches more than 138 million academic papers from a research question, not exact keywords. Its free Basic plan includes unlimited search, unlimited paper summaries and chat with papers, plus Zotero import. A Research Agent writes cited reports, and a separate workflow handles screening and data extraction for systematic reviews. Know the limits: it runs in a browser, with a Chrome extension and no phone or desktop app listed. Research Agent and report usage is limited on Basic, the systematic review workflow starts at Pro, at $49 per user a month billed annually, and the $11 academic Plus plan appears only when Academic is selected on the pricing page.
Preços e detalhes de Elicit2º lugar: ChatPDF
Plano gratuito · a partir de $89.99/ano
Para: Anyone with a document to question, not papers to find
ChatPDF answers questions about a file you bring: a PDF, Word, PowerPoint, Markdown or text file, or a YouTube or website link, with the answer shown beside the source and clickable citations. The free plan covers 2 documents and 20 messages a day and works without an account, and it runs on the web, Mac, Windows, iPhone and Android. It is second because it reads what you give it more than it searches: its paper summaries are built from abstracts, and chatting with a full paper works only for open-access papers. Free files stop at 120 pages or 10 MB. Plus is $14.99 a month or $89.99 a year on the US App Store, and the website sets its own price per visitor.
Preços e detalhes de ChatPDF3º lugar: Semantic Scholar
Grátis
Para: Anyone who wants to pay nothing
Semantic Scholar is a search engine for scientific papers that is entirely free, with no paid plans, built by the nonprofit Allen Institute for AI. It indexes more than 200 million papers from all fields of science, and a free account adds a library, email alerts and Research Feeds that recommend new papers. It is third because its AI does less than the two above: the short TLDR summaries cover only computer science, biology and medicine, the Semantic Reader is in beta and covers mostly arXiv papers, and Ask This Paper works on a limited set of papers. There is no smartphone app; the site is designed to be used in mobile browsers.
Preços e detalhes de Semantic Scholar
Classificado em 6 de out. de 2026 a partir do que cada ficha mostra e do que as pessoas dizem sobre a ferramenta, não de testes nossos. Como classificamos
Preço diante do que você recebe
Quais ferramentas de pesquisa com IA dão mais pelo dinheiro?
Going by our grades, R Discovery, Semantic Scholar and Ai2 Asta give the most for the money among AI research tools: no tool on this chart scores higher without costing more.
Veja todas as 25 no gráfico
Manter ou criar
Você conseguiria criar a sua?
There is no plain version of a research tool. It is a library of papers and sources first, and a model that reads them second. You have neither.
Manter28Você decide0Criar0Aqui não há ferramentas de pesquisa com IA para criar por conta própria.
Preço
Funciona em
Precisa ser
28 ferramentas
Ferramentas
- 3.2GPA
- 2.4GPA
alphaXiv
Pesquisa com IA
arXiv reading and discovery site with an AI research assistant
Plano gratuito · a partir de $8/mêsWeb · iOS - 2.4GPA
Anara
Pesquisa com IA
AI research assistant that cites the exact source passage
Plano gratuito · a partir de $8/mêsWeb · macOS · iOS - 2.4GPA
AnswerThis
Pesquisa com IA
AI literature review assistant with a library and writer
Plano gratuito · a partir de $14/mêsWeb - 2.4GPA
AskYourPDF
Pesquisa com IA
Chat with PDFs and other documents and get cited answers
Plano gratuito · a partir de $11.99/mêsWeb · iOS · Android - 2.6GPA
ChatDOC
Pesquisa com IA
Chat with PDFs and documents, with answers traced to the source
Teste gratuito · a partir de $89.9/anoWeb - 2.8GPA
ChatPDF
Pesquisa com IA
Ask questions about PDFs and get answers with citations
Plano gratuito · a partir de $89.99/anoWeb · macOS · Windows +2 - 2.4GPA
Connected Papers
Pesquisa com IA
Visual graphs of similar academic papers for literature search
Plano gratuito · a partir de $6/mêsWeb - 2.6GPA
Consensus
Pesquisa com IA
AI search engine that answers questions from peer-reviewed papers
Plano gratuitoWeb · Android - 2.4GPA
Edison Scientific
Pesquisa com IA
AI agents for scientific research, led by the Kosmos AI Scientist
Plano gratuitoWeb - 2.4GPA
Elicit
Pesquisa com IA
AI research assistant for literature search and systematic reviews
Plano gratuito · a partir de $49/mêsWeb - 2.2GPA
Humata
Pesquisa com IA
Document Q&A with cited answers across your uploaded files
Plano gratuito · a partir de $9.99/mêsWeb - 2.8GPA
Inciteful
Pesquisa com IA
Free citation-network tools for exploring academic papers
GrátisWeb - 2.6GPA
Keenious
Pesquisa com IA
Academic search that recommends papers from your own text
Plano gratuito · a partir de $10/mêsWeb - 2.6GPA
Liner
Pesquisa com IA
AI search with cited answers, research agents and a writer
Plano gratuito · a partir de $14.99/mêsWeb · macOS · Windows +2 - 2.0GPA
Litmaps
Pesquisa com IA
Literature review tool that maps papers by their citations
Plano gratuito · a partir de $10/mêsWeb - 2.4GPA
Logically
Pesquisa com IA
AI workspace for references, PDF notes and paper writing
Plano gratuito · a partir de $12/mêsWeb - 2.0GPA
OpenRead
Pesquisa com IA
AI platform for searching, reading and comparing papers
Plano gratuitoWeb - 2.8GPA
Otio
Pesquisa com IA
AI research workspace for chatting across many sources
Plano gratuito · a partir de $7/mêsWeb · macOS · Windows +2 - 2.6GPA
Paperguide
Pesquisa com IA
AI research platform for literature and systematic reviews
Plano gratuito · a partir de $12/mêsWeb - 2.8GPA
R Discovery
Pesquisa com IA
Paper discovery app with an AI assistant, PDF chat and audio
Plano gratuito · a partir de $69/anoWeb · iOS · Android - 2.2GPA
ResearchRabbit
Pesquisa com IA
Literature discovery tool that maps how papers connect
Plano gratuito · a partir de $10/mêsWeb - 2.6GPA
Scholarcy
Pesquisa com IA
Summarizes research papers into interactive flashcards
Plano gratuito · a partir de $90/anoWeb - 2.4GPA
SciSpace
Pesquisa com IA
AI research platform for literature review and reading papers
Plano gratuito · a partir de $12/mêsWeb · iOS - 2.2GPA
Scite
Pesquisa com IA
Research assistant that shows how papers have been cited
Teste gratuito · a partir de $20/mêsWeb - 3.2GPA
Semantic Scholar
Pesquisa com IA
Free AI-powered search engine for scientific literature
GrátisWeb - 2.8GPA
STORM
Pesquisa com IA
Open-source AI that writes Wikipedia-style reports with citations
GrátisWeb - 2.2GPA
Undermind
Pesquisa com IA
AI literature search agent that reads hundreds of papers
Plano gratuito · a partir de $16/mêsWeb
Perguntas frequentes
Quais ferramentas de pesquisa com IA são melhores?
Em 6 de out. de 2026, ToolGPA classifica assim: Elicit em primeiro (para: most people looking for papers on a research question), ChatPDF em segundo (para: anyone with a document to question, not papers to find), Semantic Scholar em terceiro (para: anyone who wants to pay nothing).
Como ToolGPA classifica ferramentas de pesquisa com IA?
A partir do que as próprias páginas de cada ferramenta mostram (preço, plano gratuito, plataformas, recursos e limites) e do que as pessoas dizem dela em avaliações e discussões públicas. Não de testes nossos. O primeiro lugar vai para a ferramenta que serve a mais gente, e o segundo e o terceiro para as melhores escolhas de quem fica de fora.