Osium AI · Jan 2025
Osium AI promoted CEO Sarah Najmark’s appearance on a JEC World 2025 panel about AI across the composites value chain in Paris.
Speed up materials innovation with Artificial Intelligence
Company research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Paris-based Osium AI (YC S23) builds an AI-powered platform for materials and chemicals R&D, helping industrial teams predict properties, design experiments, characterize materials, and optimize scale-up/manufacturing faster.
Primary product
Unified AI-powered software platform for materials and chemicals R&D
Founded
2023
Headquarters
Paris, France (41 Rue du Colisée, 75008 Paris)
Team size
1-10 employees
Industry
Software Development
Sub-industry
Materials informatics / AI for materials and chemicals R&D
Offices
41 Rue du Colisée, 75008 Paris, France
Paris, France
Business model
B2B SaaS
enterprise software
demo-led sales
Funding
Stage
Seed
Total raised
$3.1M
Latest round
Bpifrance additional funding / non-equity assistance · Sep 2024
Latest amount
$1M
Bpifrance additional funding / non-equity assistance
Sep 2024 · Bpifrance
Nov 2023 · Y Combinator / Singular / Kima Ventures / Collaborative Fund
Sep 2023 · Y Combinator
Jun 2023
People & investors
Work & culture
Mission-driven, cross-disciplinary, fast-growing, and ambitious; public materials emphasize results, audacity, growth mindset, creativity, collaboration, diversity, and inclusion.
Compensation
Public YC job postings in Paris show €40K-€70K base salary bands for AI Engineer and Data Scientist roles, and €50K-€70K plus competitive equity for a Full-Stack Engineer; broader comp policy is not public.
Benefits
competitive equity
Product & market
Pricing
Not public; demo-led enterprise/quote-based pricing
Differentiators
- —10x faster materials and chemicals development/analysis claim
- —Transparent models that are not black boxes
- —Works with sparse, unstructured, and incomplete datasets
- —End-to-end workflow from formulation to scale-up and manufacturing
- —Multimodal proprietary AI
- —Scientist-friendly interface
- —Security and privacy emphasis
- —Domain expertise in materials science and AI
Technology
Vercel
Next.js
AWS
TypeScript
Tailwind CSS
Python
Google Analytics
Customers
Aperam
FILAB
50+ materials and chemicals innovators (claimed)
Industrial leaders in textiles, chemicals, polymers, composites, alloys, bio-based materials
Competitors
Citrine Informatics
MaterialsZone
Polymerize
Aionics
Kebotix
Schrödinger
ExoMatter
Atinary SDLabs
NobleAI
CuspAI
Scale & contact
Estimated revenue
under $1M
Estimated monthly visits
1.9K
Traffic estimate as of Jun 2026
Latest news
Osium AI · Nov 2024
Osium AI announced participation in a consortium with research and industry partners including Sorbonne University, CNRS, Expiris, Fluorotechnique, PCAS, Maestria, and Atem Composites.
Osium AI · Oct 2024
Osium published a case study on Aperam using its platform to model a cryogenic alloy and compress a multi-year R&D effort into minutes of AI-assisted exploration.
Osium AI / Tilder · Oct 2024
Osium AI said CEO Sarah Najmark received the 2024 AI Woman Engineer Prize from French Prime Minister Élisabeth Borne, highlighting her work and the company’s visibility in French AI.
Osium AI · Sep 2024
Osium AI announced €1M additional funding from Bpifrance, positioned as support for its mission to transform materials R&D and accelerate industrial innovation.
Jobs and careers at Osium AI
0 jobs at Osium AI
No open positions
Check back later for new openings