Unriddle
Anara (formerly Unriddle) · Writing · Business
Unriddle is an AI research assistant that reads papers and PDFs with you, answering questions and linking each answer to the exact source passage. The company rebranded it as Anara.
About Unriddle
What Is Unriddle
Unriddle is an AI research workspace built for people who read a lot of dense material. You upload papers, documents, slides, or notes into a library, then ask questions about a single file, a folder, or everything you've collected. The answer comes back with highlighted passages that point to where it found the evidence, so you can open the source and check the claim yourself.
The core problem it solves is the gap between having sources and actually using them. Reading fifty papers to find one number is slow, and generic chatbots tend to answer from memory rather than from your documents. Unriddle keeps the work anchored to the files you gave it. It also writes with you, adding citations to drafts and exporting them.
The name on the door changed. The team rebranded Unriddle to Anara in 2025, keeping the same founder and the same technology, and sharpened the focus toward research, students, and teams. If you search for Unriddle today you land on Anara. Existing accounts carried over.
Two limits are worth knowing up front. AI answers can still be wrong, so the citations are a way to check the work rather than a guarantee it's right. And the free tier is metered, so heavy readers will hit the paid plans quickly.
Getting Started
- Create a free account at anara.com and land on a new workspace.
- Build a library. Upload PDFs, add a DOI, paste a web link, or connect a supported service like Zotero.
- Ask a question. Chat with a single file, a folder, or the whole library, and use the @ menu to pull in a research, web, or paper search agent.
- Check the answer. Click the highlighted citation to open the source passage and confirm it supports the claim.
- Write and export. Draft notes in the editor with citations attached, then export your work in the format you need.
Product Information
A quick look at Unriddle's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- Students
- Researchers and academics
- R&D and analyst teams
Tasks
- Literature review
- Reading a long PDF
- Fact-checking a draft
- Building a citation list
Scenarios
- Preparing for an exam from class materials
- Getting a first pass on an unfamiliar field
- Comparing findings across many documents at once
Key features
Source-linked answers
Every answer ties back to a specific passage in your sources. Click a highlight and the original text opens, so you can read the surrounding context and decide whether the claim holds. That turns the citation into an inspection tool rather than a trust badge. It's the feature that separates Unriddle from a plain chatbot answering from memory.
Library and connectors
You collect the sources for a project in one library and organize them into folders. Papers and documents arrive through uploads, DOIs, or web links, and supported services connect from workspace settings. Zotero import is the one most researchers reach for, and there's an export path to tools like LaTeX for writing up.
Agents and @ mentions
Type @ to bring a specialized agent into the conversation. There's one for broad research questions, one for workspace search, one for the web, one for academic papers, one for YouTube, plus agents that complete a form or build a citation list. You pick the scope instead of hoping a single model guesses it.
Multiple models in one place
The workspace lets you switch between leading models such as GPT-4 and Claude rather than bouncing between separate tabs. You match the model to the job and keep the same library and chat history around it. The free tier runs on lighter models with a limited number of stronger queries each day.
Notes editor and export
A note editor sits beside your sources, so writing and referencing happen in the same view. You draft text, attach citations as you go, and export the finished work. That closes the loop from reading to a submitted document without moving your sources into a separate writing app.
Views and extraction
A views table makes each column a question and each row a file, so a batch of papers gets processed against the same set of prompts. It's built for screening and extraction work, the kind of task that scales badly by hand. Teams use it to keep extraction consistent across reviewers.
Search API
Anara publishes a search API for paper lookup and literature search, aimed at developers building their own research tools. The company reports strong results on public benchmarks from Exa and Elicit, and those numbers come from Anara's own testing. It's a way to bring the same paper search into a product you control.
Pros and cons
Pros
- Answers link to the exact passage, so verifying a claim takes a click instead of a hunt through a PDF.
- The library holds a large number of documents in one place, which matters for literature reviews and team projects.
- Agents and @ mentions let you set the scope of a search instead of trusting a model to guess it.
- A free tier plus connectors like Zotero make it cheap to try on real coursework before paying.
- The search API opens the paper search to developers who want to build on it.
Cons
- The rebrand from Unriddle to Anara means older links, guides, and third-party reviews may still use the old name and older pricing, which is confusing when you're comparing.
- The free tier is metered by daily queries, so anyone reading seriously will need a paid plan.
- AI answers can still be wrong even with citations, so the verification step is on you, not the tool.
- There's no mobile app, so it's a browser-first workspace.
- Higher plans are per seat, which adds up for a large team.
Frequently asked questions
Unriddle is an AI research assistant for reading and writing with sources. As an AI tool for research papers, you upload documents, ask questions across them, and get answers tied to the exact passages that support them. It also helps draft and export cited notes.
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