Sacher AI

Founded by digital health clinician and behavioural AI scientist Dr Paul Sacher, we specialise in large language model (LLM) development for chronic condition management - particularly obesity and mental health - integrating clinical expertise with AI product development and behavioural science. Our four core services: 🟧 AI strategy – We help health and MedTech organisations shape their AI roadmap, align with standards like ISO42001, and demonstrate investor-ready clinical and commercial value. 🟧 LLM solutions for patient support – We design and build safe, personalised AI health assistants tailored for GLP-1–based obesity programmes and other chronic conditions, combining generative AI with behavioural insights to improve engagement and outcomes. 🟧 PromptSafe® AI safety evaluation – PromptSafe is our proprietary simulation and safety testing tool for LLMs. It uses persona-based conversations to detect tone, risk, and accuracy issues before deployment, helping teams comply with internal QA and regulatory frameworks. 🟧 Clinical & behavioural AI research – We conduct rigorous evaluation of AI solutions, including study design, behavioural testing, and academic publication support - offering credibility with regulators, funders, and partners. At the heart of our work is our Research and Innovation Lab, which supports clients from early feasibility to deployment-ready MVPs. Whether leading delivery or embedding within your team, we offer deep technical, clinical, and behavioural science expertise to accelerate your AI ambitions.