nexos.ai raises EUR30M Series A to accelerate secure AI adoption.

nexos.ai has closed a €30 million Series A to accelerate enterprise adoption of AI while tackling the fast-growing risk of unsanctioned tools and poor governance. The round was co-led by the debut vehicle from former Sequoia partner Matt Miller — Evantic Capital — and long-time backer Index Ventures, with participation from existing investors.

The Vilnius-headquartered start-up, founded by the team behind cybersecurity success Nord Security, is aiming at a familiar corporate headache: employees routinely using consumer AI services with confidential documents, a phenomenon often labelled Shadow AI. Launched in January, nexos.ai said it closed the Series A just six months after going live, underlining strong investor appetite for tools that combine security, observability and governance for AI use.

The company will deploy the fresh capital to expand engineering and product work on its two-stack approach: an employee-facing AI Workspace for secure collaboration and a developer-oriented AI Gateway that centralises access to models. The platform already supports routing across over 200 AI models, offering model comparison, role-based controls, detailed audit logs, Retrieval-Augmented Generation and private hosting for sensitive workloads.

Founders say enterprises regularly face four adoption barriers — fragmented deployments, runaway costs, lack of visibility and weak governance — and describe a typical lifecycle of pilots that scale into costly, insecure tool sprawl. “Security teams fight ransomware while their own people create the biggest uncontrolled data exfiltration risk,” said Tomas Okmanas, CEO and co-founder, highlighting the tight window firms have to get AI infrastructure right.

For engineering teams, the AI Gateway promises single-endpoint orchestration, intelligent caching to trim inference costs, smart fallbacks and load balancing to protect uptime, plus RAG connectors to ground outputs in company documents. For business users, the Workspace bundles multi-model chat, file-format support, side-by-side model evaluation and built-in search — all governed by custom guardrails and logging to reduce accidental exposure.

Investors framed their backing as a response to urgent market demand. Matt Miller and Evantic cited the founders’ track record and the strategic need for firms to preserve data control as they scale AI. Index Ventures highlighted nexos.ai’s rapid product progress and enterprise focus as key reasons for doubling down.