01
The workspace
See the workspace Project Hollow
A calm home for the work around your work: notes, tasks, files, planning, communication and the conversations that connect them.
Products
One place for the work. A better layer of intelligence beneath it.
Hollow brings the tools you use together, with Hollow AI woven through every app. Kiln is the platform behind the models that power it.
A connected set of products
Start with the work. Add the depth when you need it.
02
The intelligence layer
Meet Hollow AI Hollow AI
An assistant that can move from answer to action. Ask in the place where the work is happening, keep the context, and stay in control.
03
Behind Hollow AI
About Kiln Hollow Kiln
Soulstack's internal, fully local platform for training the language models behind Hollow AI. Here is what we are building.
Hollow Kiln
The models behind Hollow AI.
Training happens fully locally, on Soulstack's own machines, not as a product with an interface of its own. These are the model families in progress.
Small and efficient
Built for low-resource, low-latency and specialised deployment.
The primary family
Aiming for the best balance of capability, efficiency and everyday usefulness.
Released openly
Licence, weights, source and data policy published for each model.
The point of the system
Less switching. More knowing where things are.
Context travels.Your work stays close to the conversation that makes it useful.
Choice stays visible.Pick the kind of help you need without learning a new product map.
Action stays yours.Hollow can move quickly, while important changes remain clear and reviewable.