Free
$0forever
Includes:
- 1 GB knowledge library
- Source citations
- Web search with citations
- Fast AI models
- No credit card required
- Knowledge Hub access
Start free. Upgrade when you need more.
Free plan available. No credit card required.
Annual billing shows the monthly-equivalent price.
Includes:
Everything in Free, plus:
Billed monthly · no annual discount
Everything in Individual, plus:
Shared team library + pooled storage
Everything in Teams, plus:
Four things professional buyers need to know before sharing their documents.
Documents stored on Cloudflare R2 with AES-256 encryption. All traffic over TLS 1.3.
Providers never train on your data. We store your content to serve you; the AI providers keep nothing.
Tatsu does the work and cites every source, so you can verify the answer instead of trusting a black box.
Bring your work together with extensions, a persistent RAG knowledge library, and integrations across your tools.
A chat tool forgets your documents when the session ends. Tatsulok persists your documents across sessions, organizes them into collections by client or project, and gets smarter with every document you add. Your library is a compounding asset: the more you add, the more powerful every future query becomes.
Some AI tools can search web + documents + scholarly papers in one query. Tatsulok's actual difference: (1) your library is persistent and organized into collections, not a per-session file upload that vanishes; (2) Tatsulok cites the exact document, page, and paragraph, not just 'from your file'; (3) your library gets smarter over time as we ship new AI analysis features. It's a compounding asset, not a service.
Yes. Documents are encrypted at rest (AES-256) and in transit (TLS 1.3). Stored on Cloudflare R2. We never use your documents to train AI models. We use OpenRouter and direct API providers, none of which train on API traffic. See our Trust & Security page for full details.
Yes. The Free plan lets you use Tatsulok with no card required, so you can evaluate it before upgrading. Paid plans can be cancelled anytime from Settings, you keep access until the end of your billing period, and you are never locked in. See our Refund & Cancellation Policy for details.
Max includes access to frontier models curated for quality over quantity. You pick the model per conversation based on what you need: frontier models for deep analysis, faster models for quick lookups.
Team plans include shared collections with role-based access. One person can upload and organize; the whole team can query. Shared libraries are great for law firms, consulting teams, or research groups where everyone needs access to the same documents.
PDFs (including scanned with OCR), Word documents, Excel spreadsheets, PowerPoint presentations, plain text, images (JPEG, PNG with content extracted), and more. Video and audio transcription is also supported for recorded interviews, depositions, or meeting recordings.
NotebookLM is session-based. Your library doesn't persist. Perplexity is primarily a web search tool with some document capability. Tatsulok is purpose-built for persistent, organized knowledge libraries: you build it over time, it grows more powerful with every document, and every answer cites the exact source in your library.