How does Sapience compare to Heptabase?

TLDR: Both are visual thinking tools, but Sapience is built on open local files with AI-native knowledge management.
Heptabase is probably the closest product to Sapience. Both are built around a similar goal: helping people understand complex topics they care about.
This is why a feature-by-feature comparison is not the most useful way to think about them. The more important difference is how each product is structured around that goal.
In Heptabase, everything revolves around the whiteboard. The whiteboard is the main place where the work happens. In Sapience, the canvas is one part of a broader knowledge base made up of notes, canvases, and AI chats, all linked with each other.
Like Obsidian, Sapience puts emphasis on openness and transparency. Notes, canvases, and AI chats live as text files in your local folders, using open standards where possible.
It also changes the role of AI. In Sapience, AI conversations are not just temporary assistance. They can be organized in folders alongside your notes and canvases, linked to other materials, mentioned in other conversations, and placed directly on visual boards. In that sense, AI becomes part of the knowledge system rather than something separate from it.
Bottom line: if you want a focused visual thinking tool built around the whiteboard, Heptabase may be the better fit. If you value openness, transparency, and a knowledge base where notes, canvases, and AI chats all remain connected, Sapience may be the better fit.