Healthcare

Osseus

Website
Founded 2026Origin source ↗Checked 2026-09-15

Overview

Osseus is building the frontier biomedical AI research lab, starting with the evaluations, reinforcement learning environments, and datasets that help AI labs train more capable, aligned, and safe models. We post-train models for medical and biological tasks, and deploy these in biotech, pharma and healthcare systems to ultimately improve patient outcomes.

Company description As recorded 2026-11-08

Founders & team

Anish Mariathasan

Founder/CEO

Co-Founder at Osseus (YC S26). Prev. co-founded a compliance AI startup. ML research at a Harvard-HKU joint lab on computer vision for cancer research. MEng in Biomedical Engineering from Imperial College London, dropped Oxford PhD in AI for Health. Awarded academic scholarships for both.

Founder profile As recorded 2026-09-15

Ayush Patel

Founder/CTO

Co-Founder at Osseus (YC S26). 2x intern at Apple, where he built an agentic QA system. MEng in Computer Science from Imperial College London.

Founder profile As recorded 2026-09-15
2team members reported
Source-reported As recorded 2026-09-15

Founded 2026 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedLondon, England, United Kingdom
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year