Reasoning Infrastructure
Your brain is always on.
Get more out of your AI with compounding knowledge tools in Penumbra.
Monthly
AnnualSave ~15%
All plans include
Reading your own knowledge costs nothing.
Browse and search your knowledge at no extra cost
MCP tools for Claude, Cursor, and more
Web clipper for capturing from the browser
In-product support and help center
Design your own extraction frameworks
14-day free trial on all plans
Full access from day one. Cancel anytime during the trial and pay nothing.
“I signed up for Penumbra as an early beta user and it has transformed the way I work, saving me time and improving what I'm getting out of AI on a daily basis. I cannot wait to continue rolling this out across my team.”
— Enterprise Marketing Leader
Your data, your rules
We never train AI on your data — your knowledge stays yours
All data encrypted at rest and in transit
No third-party analytics, tracking cookies, or data resale
Delete your account and all data is removed within 30 days
API access available by request for Solo and Team plans. Contact us.