Building the future of AI-powered tools

AI powered tools that make
work safer and
faster.

Move at the speed of thought. Execute with total certainty. 4os.ai engineers purpose-built AI tools for high-stakes teams. We help you accelerate your workflow without ever compromising on safety or precision.

Products

Tools we're building

READY

Lettr

Simpler is often better. An AI-powered communications tool designed to streamline how teams receive, send and review consumer feedback. Fast, accurate, and built for professionals - from SMEs to Large Enterprise.

Learn more
Coming soon

Specialised LLM Agents

Purpose-built AI agents for regulated industries. Designed with compliance, auditability, and safety at their core. Tailored to the workflows that matter most.

More details coming soon

About

A development organisation built around AI-native thinking

Safety first

Every tool we build is designed with safety and compliance as a foundation, not an afterthought. Critical for regulated industries.

Productivity amplified

We build tools that remove friction from professional workflows, letting teams focus on the work that matters.

Contact

Want to learn more?

Whether you're interested in our products or exploring how AI can transform your workflows, we'd love to hear from you.

hello@4os.ai