Unriddle
unriddle.ai
AI research assistant for reading and querying documents.
Quick Information
- Category:
- Research & Search
- Pricing:
- Freemium
- Platforms:
- Web
- Free Plan:
- Yes
- Last Verified:
- September 2026
What Is Unriddle?
Unriddle, an AI research assistant for reading and querying documents, has rebranded to Anara AI — the Unriddle name and older product descriptions are now outdated, with the current service operating as Anara. Y Combinator-backed, Anara is used by over 3 million researchers at institutions including Stanford, MIT, and Johns Hopkins, letting users upload papers, reports, and multimedia files into workspaces and ask questions across entire document libraries with passage-level citations. Pricing (checked August 2026) includes a free tier and annual per-seat plans: Plus at $10/month, Pro at $20/month, and Max starting at $100/seat/month (up to $167/month), with access to frontier models including GPT-5, Claude 4 Sonnet, and Gemini 2.5 Pro.
Its genuinely massive real user base — over 3 million researchers at institutions like Stanford, MIT, and Johns Hopkins — reflects real academic credibility and trust, and the passage-level citation feature provides genuine verifiability for research work, letting users confirm exactly where an answer came from within their uploaded document library rather than trusting an unverifiable AI summary.
It's aimed at researchers and students wanting to query large document libraries with verifiable, passage-level citations, with the important note that the product is now called Anara rather than Unriddle — anyone searching for or referencing the older Unriddle name should know it's the same underlying product under new branding, with the massive real user base (3 million-plus researchers) and elite institutional adoption providing genuine confidence in the platform's research-grade reliability. See our Learning & Education tools directory for related tools like Elicit and Scite.
What Can You Use Unriddle For?
Document library querying
Asks questions across entire uploaded document libraries with citations.
Passage-level citation verification
Provides passage-level citations for verifiable research answers.
Multi-format document upload
Uploads papers, reports, and multimedia files into research workspaces.
Unriddle Features
- Passage-level citations — Provides citations at the passage level for verifiable research answers.
- Frontier model access — Provides access to GPT-5, Claude 4 Sonnet, and Gemini 2.5 Pro.
- Multi-format uploads — Supports papers, reports, and multimedia files in research workspaces.
Who Is Unriddle For?
- Researchers — Uses verifiable, passage-level citations for querying large document libraries.
- Students at research institutions — Uses the platform’s massive real adoption at institutions like Stanford, MIT, and Johns Hopkins.
Unriddle Pros & Limitations
What We Like
- Genuinely massive real user base — over 3 million researchers at elite institutions
- Passage-level citations provide real verifiability distinct from unverifiable AI summaries
- Access to frontier models (GPT-5, Claude 4 Sonnet, Gemini 2.5 Pro) across pricing tiers
Limitations
- Rebranded to Anara AI, which may cause confusion for users searching under the old Unriddle name
- Max tier ($100-$167/seat/month) represents a significant cost for the highest-tier access
- Free tier likely has more limited document upload and query capacity than paid tiers
Unriddle Pricing
| Plan | Price | Main Features |
|---|---|---|
| Free | $0 | Basic document querying |
| Plus | $10/month (annual) | Expanded document library access |
| Pro | $20/month (annual) | Higher usage limits |
| Max | $100-$167/seat/month | Highest tier, frontier model access |
Pricing was last verified September 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #288
- Overall Score:
- 63.4/100
- Monthly Users:
- –
- Rank Change:
- ▲ 239
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by Unriddle or its company. How Our Rankings Work
Frequently Asked Questions
Is Unriddle still called that?
No, it rebranded to Anara AI — the underlying product is the same.
Is Anara (Unriddle) free?
Yes, a free tier is available alongside Plus, Pro, and Max paid tiers.
How many researchers use Anara?
Over 3 million, at institutions including Stanford, MIT, and Johns Hopkins.
Does Anara provide citations?
Yes, passage-level citations for verifiable research answers.
Our Take
Unriddle's rebrand to Anara AI is worth noting when searching for current information, though the underlying product continues serving its genuinely massive base of over 3 million researchers at elite institutions.
The passage-level citation feature provides real verifiability that distinguishes it from tools producing unverifiable AI summaries, a meaningful advantage for serious research work.
Unriddle Alternatives
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