Finland-based smart ring maker Ōura has built a proprietary large language model for women’s health.

Rolling out for testing in Ōura Labs, the model within the Ōura Advisor experience draws from a broad foundation of established medical standards, research and knowledge sources reviewed by an in-house team of board-certified clinicians and women’s health experts. It integrates biometric signals and long-term trends to deliver personalised, evidence-based guidance.

Clinically informed and rigorously vetted, the model supports questions spanning the full reproductive health spectrum, from early menstrual cycles through menopause. Customised to reflect women’s physiology and lived health experiences, it marks a significant evolution in Ōura’s approach to AI, shifting from applying general-purpose AI tools towards more personalised, empathetic and clinically informed conversations designed for specific health use cases.

“This custom model is a fundamental shift in how we responsibly deploy AI in health to meet the needs of our members,” said Ricky Bloomfield, chief medical officer at Ōura. “Women’s health is too complex and too often overlooked to rely on one-size-fits-all systems. By designing a model specifically for women and grounding it in trusted clinical science and real-world biometric data, we’re setting the standard for how responsible intelligence should be built and expanded across more areas of health, pairing rigorous science with the lived, longitudinal data that make Ōura uniquely powerful.”

This is Ōura’s first custom LLM, building on Ōura Advisor’s existing combination of generative AI, health-sensing algorithms and biometric tracking to deliver more accurate, reliable and accessible health guidance for women. This foundation allows Ōura Advisor (ouraring.com/blog/oura-advisor/) to interpret questions through the lens of women’s physiology, cycles and life stages, adding critical context where general-purpose AI models can fall short.

When members ask Advisor a women’s health question, it prompts the model to reference its curated body of women’s health research and knowledge sources, while analysing relevant biometric signals and longitudinal trends across sleep, activity, cycle and pregnancy data, stress and more. It is intentionally tuned to be non-dismissive, reassuring and emotionally supportive, helping women feel seen and equipped to have more informed and confident conversations with their providers.

“Women’s health questions are often deeply personal and high-stakes, and they deserve answers that can be trusted,” said Chris Curry, clinical director of women’s health at Ōura. “With this model, we’re providing the kind of preparation and insight that I wish every one of my patients had before coming to their appointment. For example, if someone asks, ‘Why has my cycle suddenly become irregular, and is that something to worry about?’ Oura Advisor can walk them through what’s typical, what their data may be showing, and what would be most helpful to surface in conversations with their provider. It translates complex science into clear, compassionate, always-available guidance, helping women connect what they’re feeling with what they’re seeing in their data, and allowing them to walk into discussions about their health more informed, confident and in control of their decisions.”

The model is built on the belief that advancements in AI should not come at the expense of privacy. It is hosted entirely on Ōura -controlled infrastructure, and conversations are never shared or sold. Ōura, in partnership with WebAI, is working to enable a privacy-first architecture that optimises for performance and user experience.

Participation in Ōura Labs is entirely optional, and members can choose not to join or to opt out at any time. Ōura Labs serves as a space for testing and learning, where innovations are evaluated in partnership with members and continuously improved through real-world engagement and feedback before being refined, removed or integrated into the core app experience.

Founded in Finland in 2013, Ōura (ouraring.com) has EU headquarters in Oulu and US headquarters in San Francisco.