Heptabase
Kimi AI
Pricing
PricingPaid
PricingFreemium
Free Plan
Free Plan
Free Plan
Side-by-side comparison based on pricing, features, and community data.
Heptabase and Kimi AI are both AI productivity tools. Heptabase is Paid; Kimi AI is Freemium. These tools serve entirely different purposes and shouldn't be compared directly.
These tools serve entirely different purposes and shouldn't be compared directly. Heptabase is a personal knowledge management system for visual note-taking and research organization. Kimi AI is a conversational AI agent platform for task automation and document analysis. Pick Heptabase if you're building a visual research or learning system where spatial relationships matter. Pick Kimi AI if you need an AI assistant for web research, document processing, and autonomous workflows. They don't overlap meaningfully—the comparison is like weighing a filing cabinet against a search engine.
Pick Heptabase if you're a researcher or student who thinks visually and wants to map complex ideas across nested whiteboards with integrated PDF and video annotation.
Pick Kimi AI if you need an AI assistant to automate research, analyze documents, and run multi-agent workflows across websites and spreadsheets.
| Feature | Heptabase | Kimi AI |
|---|---|---|
| Primary purpose | Personal knowledge management | Conversational AI assistant |
| Free tier | 7-day trial only | Freemium with free tier |
| Mobile (non-iOS) | — | ✓ Android |
| PDF/document annotation | ✓ Native first-class | Partial (analysis only) |
| Real-time collaboration | — | ✓ In chat interface |
| Web research automation | — | ✓ Native + agents |
| Global availability | ✓ Worldwide | Restricted (China-focused) |
| Export/portability | Limited (lock-in risk) | Not applicable |
Synthesized by AI from verified tool data · cached per pair
Full access for individual users
Full access, billed annually
Limited daily messages and context window
