Unriddle

What is Unriddle?

Unriddle is an AI research assistant that reads your documents and answers questions with citations to the exact passage. The product rebranded to Anara in 2025, and two review guides date the change to March 2025. Existing accounts moved to the anara.com domain, and the core reading and citing technology carried over. Today the service describes itself as a tool to search your library and the web, then write with every claim cited to its source.

Founder Naveed Janmohamed launched Unriddle in 2023, and he leads Anara as CEO, according to the company blog. The company is backed by Y Combinator. Anara works across up to 10,000 files in one conversation and links research tools such as Zotero, Mendeley and PubMed. Old Unriddle links now point to Anara, which was live and selling five plans when we checked in October 2026.

Key Features

• Cited answers: Unriddle, now Anara, links every answer to the exact passage it came from. One click opens the source, so you can confirm a quote or figure before it reaches your thesis or report.
• Large libraries: Anara says it can work across up to 10,000 files in a single conversation. Researchers can question a whole literature collection at once instead of opening papers one by one.
• Multi-format uploads: The workspace accepts PDFs, presentations, web pages, audio and video, according to the company blog. Lecture recordings and papers can sit side by side and be searched together.
• Writing with citations: The editor suggests citations automatically while you write. Anara’s blog says citations can be formatted in academic styles, which cuts the manual reference work in essays and literature reviews.
• Choice of AI models: Paid plans let you pick between models from several AI providers. The Pro tier lists leading models from OpenAI, Anthropic, Google and xAI, so you can compare answers across them.
• Research connectors: Free accounts connect to Zotero and Mendeley, and Plus adds PubMed. The homepage also lists arXiv, bioRxiv and medRxiv, which keeps paper discovery close to your reading library.
• Collaboration: Shared folders let classmates or lab members work from one library. Plus allows 5 folder collaborators, Pro allows 50, and Max removes the limit for larger research groups.
• Study tools: Anara’s blog describes flashcard and quiz generation built from your uploaded material. Students can turn lecture notes or readings into revision questions without copying text into another app.
• Deep Search and Model Council: The Max plan adds Deep Search and Model Council, according to the pricing page. These tools target heavy users who want broader searches and answers checked across several models.

Pros

• Verifiable output: Source-linked answers make checking easy and reduce the risk of quoting an invented claim. CASRAI and Dupple both name passage-level citations as the main strength of the tool.
• Fair entry price: Plus costs $10 a month and Pro costs $20, according to the official pricing page. A free plan with no credit card lets you test the workflow on real papers first.
• Wide integrations: Anara connects reference managers, cloud drives and science databases in one place. Zotero, Google Drive, OneDrive, Dropbox, PubMed and Slack all appear on its integration list.
• Strong security claims: The company states it is SOC 2 Type II and ISO 27001 certified and GDPR and HIPAA compliant. That matters for labs and universities handling unpublished or sensitive research.
• Several platforms: Anara runs as a web app, a desktop app and an iOS companion. You can read on a laptop, then check a citation on your phone during a meeting or lecture.
• Same account after rebrand: Existing Unriddle accounts and data moved across automatically, as review guides report. Long-time users did not need to rebuild libraries when the name changed to Anara.

Cons

• Name confusion: Searches for Unriddle now land on a product called Anara. Older tutorials, directory listings and screenshots still show the former name and pricing, which can confuse new users.
• Tight free plan: The free tier has limited daily usage and caps uploads at 20MB or 120 pages. Dupple calls it suitable for testing only, so regular research quickly needs a paid plan.
• Pricey top tier: Max costs $120 a month on the official page, while one review lists a higher figure. Most individual students will find Pro sufficient and the top plan hard to justify.
• Nuance can slip: Dupple reports that Anara can oversimplify theoretical or philosophical material. Citations show where a claim came from, but you still need to read the passage and judge the argument yourself.
• Limited mobile depth: Reviewers note limited mobile optimisation, and the iOS app is described as a companion. Heavy reading and writing work remains better suited to the web or desktop app.
• Benchmarks are self-reported: Anara claims 97% answer correctness in its own benchmark, ahead of ChatGPT and NotebookLM. No independent audit was found, so treat the accuracy figure as a vendor claim.

Who is Using Unriddle?

• Graduate students: Speed up literature reviews.
• Academic researchers: Check claims against sources.
• Undergraduates: Revise with flashcards and quizzes.
• Research teams: Share libraries and citations.

Pricing

Unriddle, now sold as Anara, has a free plan and four paid tiers (official prices, October 2026).

Dupple lists Max at $167 a month and a $30 per seat Teams plan, which differ from the official page. Plans and limits shift with new models, so confirm figures on anara.com before you subscribe.

What Makes Unriddle Unique?

Passage-level citations across libraries of up to 10,000 files set it apart from general chatbots. Answers point to the exact sentence in your own papers, and the editor carries those citations into your draft. Pairing that with Zotero, PubMed and arXiv connectors makes it a research workspace rather than a simple PDF chat tool.

Compatibilities and Integrations

• Platforms: Web app, desktop app and iOS companion.
• Research tools: Zotero, Mendeley, PubMed, arXiv, bioRxiv and medRxiv.
• Cloud storage: Google Drive, OneDrive, Dropbox and SharePoint.
• Productivity: Slack, Gmail, Microsoft Teams and Microsoft Word.

Unriddle Tutorials

Getting started takes a few minutes on the free plan.

1. Sign up free at anara.com.
2. Upload papers or connect Zotero.
3. Ask a question about your library.
4. Click citations to check each source.
5. Draft your text with suggested citations.

How We Rated It

Summary

Unriddle, now Anara, suits students and researchers who need answers they can trace back to a source. Its main limitation is a tight free plan, so regular use realistically starts at $10 or $20 a month. We rate it highly for literature reviews and evidence-heavy writing. Tip: connect Zotero first so your existing library is ready to query.