Building AI that
matters.

TurningMatter explores the intersection of intelligence and utility. We build systems that are rigorous, transparent, and helpful.

Featured Product

Cumulate Chat

Access 190+ AI models from every major provider through one subscription. GPT-5, Claude Opus, Gemini Pro, Grok, DeepSeek, and more—all in one beautiful interface.

190+ Models$5.99/mo
Cumulate
Switch models mid-conversation
Built-in web search
File & image uploads
Privacy-first design

Open source tools,
built for developers.

We believe in building in public. Our open source projects are designed to help developers build better AI applications with transparent, well-documented code.

Featured Project

Cumulate Reader

High-performance URL to Markdown converter for LLMs. Self-hosted, fast, and optimized for AI applications.

View on GitHub