USE CASE / RESEARCH
AI for research
Answer engines and notebook tools that search, summarize and cite sources.
Answer engines, deep-research tools and paper or notebook readers that find, summarize and cite sources. Pure writing or design tools are excluded even when they can answer a question.
ChatGPT
OpenAI
Status not recorded
OpenAI's hosted assistant for conversation, source-based research and reviewable file work; features and allowances depend on the plan and account.
Claude
Anthropic
Status not recorded
Anthropic's hosted assistant for files, drafting, editable artifacts and connected tools; model access and usage limits vary by plan.
Connected Papers
Connected Papers
Status not recorded
Explores papers around chosen seeds using a similarity graph over Semantic Scholar data, with prior/derivative views; the graph is a discovery aid, not a complete citation tree or literature search.
DeepSeek
DeepSeek
Status not recorded
DeepSeek's hosted chat and separately metered developer API; service terms, model versions and public model licenses must be checked separately.
Gemini Notebook (formerly NotebookLM)
Status not recorded
Google's source-based research assistant, renamed from NotebookLM, with cited questions, audio overviews and sharing governed by account-specific limits and data terms.
Readwise
Readwise
Status not recorded
Highlight review and reading management: Readwise revisits saved highlights; Full includes Reader for articles, feeds and documents, with Ghostreader AI and note-app exports.
Litmaps
Litmaps
Status not recorded
A literature discovery and mapping service using citation, author and title/abstract similarity searches, with sharing and plan-dependent alerts.
Paperpal
Cactus Communications
Status not recorded
Academic writing assistance for language revision, source-aware drafting and research citations, with plan-specific checks and allowances.
Perplexity
Perplexity
Status not recorded
A hosted search and research assistant with citations, file analysis and plan-dependent model tools; cited answers still need review and consumer, Enterprise and API rights differ.
Exa
Exa AI
Status not recorded
Web search and page-content APIs for applications and agents, with request, result and content-type charges; query-data training and Enterprise ZDR terms need separate review.
Gemini
Status not recorded
Google's Gemini Apps assistant for conversations, supported media, research and connected tools; personal plans, Workspace and developer services have different conditions.
Grok
SpaceXAI LLC (SpaceXSI)
Status not recorded
A hosted assistant for conversation, web and public-X search, file analysis and creative tasks; account and subscription paths have different limits.
Hypothesis
Hypothesis
Status not recorded
Annotate the live web: public and private notes on any page — Instapaper's more annotation-native cousin for people who want the highlight to stay on the URL.
Julius
Julius AI
Status not recorded
An AI data analyst: upload spreadsheets or connect databases, then chat to clean, analyze and visualize data — with real Python execution under the hood and shareable reports out.
Kimi
Moonshot AI
Status not recorded
Moonshot AI's hosted assistant for cited web search, document and spreadsheet tasks, and configurable conversation memory.
Scholarcy
Scholarcy
Status not recorded
Paper summarizer that extracts flashcards, tables and references from PDFs — a reading layer for literature review when you cannot open every file.
SciSpace
SciSpace (PubGenius)
Status not recorded
An AI research assistant that explains papers in plain language as you read, answers questions grounded in the PDF, searches 280M+ papers conversationally and formats citations automatically.
Tavily
Tavily
Status not recorded
A search API purpose-built for LLMs and RAG: one call returns ranked, content-ready web results optimized for retrieval — the plug-and-play web tool of countless agent frameworks.
Z.ai
Zhipu AI
Status not recorded
Zhipu's international counter: GLM models with an agentic streak, priced for builders.
Brave Search API
Brave Software
Status not recorded
An independent search index exposed as an API: privacy-first Google-alternative results with web, news, image and local endpoints — the independent-data option in the AI search stack.
Genspark
MainFunc
Status not recorded
An AI workspace whose Super Agent combines tools, connected data and files for research and content tasks, with plan-specific credits and usage allowances.
Metaso
Metaso (秘塔科技)
Status not recorded
A hosted AI search service that retrieves public web links and uploaded documents to generate answers, with credit-metered search and content tools.
MiniMax Agent
MiniMax
Status not recorded
A hosted MiniMax agent workspace for multi-step research and content tasks. Current Agent tool pages use MiniMax Code branding, with account-dependent presentation workflows and unified plan credits.
Mistral Vibe (formerly Le Chat)
Mistral AI
Status not recorded
Mistral's Vibe combines the former Le Chat assistant with work and coding agents; connectors, private deployments and usage rights depend on the plan and contract.
Monica
Butterfly Effect
Status not recorded
A hosted assistant for chat, page/PDF summaries, writing and translation across browser, desktop and mobile; model access, credits and regional account conditions need separate checks.
ChatLLM
Abacus.AI
Status not recorded
Abacus.AI's hosted multi-model assistant for chat, document/media work and connected agents; per-user subscriptions share a credit system with separately metered features.
ChatPDF
ChatPDF
Status not recorded
The original chat-with-a-PDF tool: drop in a document and ask questions with cited answers — simple, fast and free to start, ideal for papers, reports and manuals.
Humata
Humata
Status not recorded
Chat with your documents at scale: upload up to thousands of PDFs and ask questions with page-cited answers — built for heavy document workflows like research, legal and finance.
Poe
Quora
Status not recorded
Quora's hosted platform for discovering third-party AI bots and creating or sharing bots and apps, with plan- and bot-specific points.
Venice
Venice.ai
Status not recorded
A hosted multimodal AI workspace with model-specific privacy modes, character creation and separately metered premium/API features.
Tencent Yuanbao
Tencent
Status not recorded
Tencent's hosted assistant for questions and creation, with documented meeting-delegation and minutes features for eligible Tencent Meeting configurations.
Wenxin
Baidu
Status not recorded
Baidu's flagship AI assistant, now branded Wenxin (formerly ERNIE Bot / 文心一言): chat, multimodal generation and deep integration with Baidu Search and its cloud AI stack, tuned for Chinese-language work and domestic compliance.
iFlytek Spark
iFLYTEK
Status not recorded
iFLYTEK's cognitive model assistant, built on China's leader in speech technology: strongest voice interaction, deep education and office integrations, and open API access through the Spark platform.
SenseChat
SenseTime
Status not recorded
The computer-vision giant's chatbot: SenseNova models behind enterprise and consumer chat.
Tiangong
Kunlun Wanwei
Status not recorded
Kunlun's consumer AI suite: chat, search, and music generation on the Skywork model line.
You.com
You.com
Status not recorded
You.com leads with what it now sells — web search APIs for AI systems, per its own homepage — rather than the consumer answer engine it was known for. Agents and retrieval stacks buy the indexed results and the parsing endpoint; the old chat surface is no longer the front door.