
Co-one is a data-centric solutions provider that enhances AI performance across enterprises. They specialize in generative AI evaluation, data annotation, and dataset generation, ensuring that AI projects are real-world-ready. With a focus on high-quality data solutions, Co-one empowers businesses to unlock their creative potential and improve model accuracy through comprehensive evaluation and continuous learning. Their extensive partnerships and robust team support a scalable approach to AI integration, making them a key player in the AI landscape.

Co-one is a data-centric solutions provider that enhances AI performance across enterprises. They specialize in generative AI evaluation, data annotation, and dataset generation, ensuring that AI projects are real-world-ready. With a focus on high-quality data solutions, Co-one empowers businesses to unlock their creative potential and improve model accuracy through comprehensive evaluation and continuous learning. Their extensive partnerships and robust team support a scalable approach to AI integration, making them a key player in the AI landscape.
What they do: Data-centric AI platform: data annotation, dataset generation, model/agent evaluation, GenAI tooling
Headquarters: Tallinn, Estonia
Founders: Ataberk Arman Kayhan and Mert Menekşe
Employee count: 27
Recent funding: €1M pre‑Series A / Seed (May 12, 2025), led by Ak Portföy
Bridging the gap between research models and production-ready generative AI through data quality, evaluation, and tooling.
2021
Artificial Intelligence / Data Solutions
€1,000,000
Participating investors included Maxis Innovative Venture Capital, DOMiNO Ventures, TechOne Venture Capital, and Leap Investments.
Round cited a valuation of €4.2M.
“Has repeat participation from regional VCs (Maxis Innovative Venture Capital, TechOne VC) and a €1M pre-Series A lead investor (Ak Portföy) in 2025”