Portfolio
OpenSpawn

Folder-native AI workspace that reads your local project files, builds contextual understanding, maintains memory across sessions, and tracks changes to surface what needs attention next.

AI Workspace · openspawn.org · Open Source, AI, Local-First
Progressive Crystallization

State-first reasoning scaffold for Claude Code that stress-tests hard questions through adversarial agents, explicit epistemic state, and evidence-driven update rules.

Open Source Research Workflow · GitHub repository · Claude Code, Markdown, MIT License
Non-Tox Nurseries

Health assessment platform for childcare facilities, providing personalized recommendations to reduce toxic exposures and create safer environments for children.

Health App · non-tox-nurseries.co.uk · Assessment Tools, Health Analytics
Books
Small-n Management

A short book on why small numbers obey different management laws.

Book · Download PDF
About

Ansatz Ventures is a venture builder for the AI era. By leveraging generative AI to compress development cycles, we build and iterate on products faster than ever before.

This acceleration enables us to serve increasingly specific customer segments with tailored solutions in markets that were previously too small or expensive to address profitably. Each product in our portfolio is designed to solve a precise problem for a well-defined audience.

Team
Peter Gratzke

Peter Gratzke is the founder of Ansatz Ventures. He currently serves as EMEA Head of Innovation and Transformation Delivery at Amazon Web Services (AWS), where he helps customers envision, validate and achieve business outcomes by working backwards from their needs and building solutions on AWS.

His career spans innovation leadership across multiple industries and geographies. Previously, he served as Director at MetLife Innovation Centre in Singapore, where he built and launched a portfolio of products across Asia. He also led ecosystem initiatives at Deloitte's U.S. Innovation / Catalyst Fund and worked as Project Lead for Investors Industries at the World Economic Forum.

Peter holds a Master's degree in Philosophy of the Social Sciences from The London School of Economics and Political Science (LSE) and a Master's degree in Political Science and Economics from Ludwig-Maximilians-Universität München.