We’re incredibly excited to announce a new addition to our portfolio—nexos.ai. Today, a pioneering AI infrastructure company emerged from stealth with an announcement of $8 million in funding led by Index Ventures, with participation from Creandum and Dig Ventures. nexos.ai is solving one of the most pressing challenges businesses face in 2025: how to efficiently deploy, manage, and optimize an increasingly complex ecosystem of AI models across their organizations.

nexos.ai was co-founded in late 2024 by Tomas Okmanas and Eimantas Sabaliauskas, the co-founders of several successful businesses from our portfolio, including Nord Security (valued at $3 billion). The round attracted investment from prominent angels, including Olivier Pomel (CEO of Datadog), Sebastian Siemiatkowski (CEO of Klarna), through Flat Capital, Ilkka Paananen (CEO of Supercell) and Avishai Abrahami (CEO of Wix.com).

As companies race to integrate AI capabilities, they face mounting complexity in managing multiple AI models, controlling costs, and ensuring reliable performance. The idea for nexos.ai emerged from Okmanas’ firsthand experience, where he struggled to integrate AI across several companies he was involved with – despite spending over $100k per month on large language models (LLM) usage in some cases. Conversations with other companies revealed the same pattern: businesses were eager to deploy AI but lacked the infrastructure to create high-quality, secure, flexible, and cost-effective applications at scale.

nexos.ai has solved this problem by building an AI operating system for enterprises, enabling them to harness and deploy hundreds of AI models through a single, seamless platform.

“Companies know that AI is an operational and competitive necessity, but they’re drowning in the challenges of managing multiple models, controlling costs and ensuring accurate and reliable performance,” said Okmanas, CEO and co-founder of nexos.ai and Tesonet. “At the same time, AI models are becoming increasingly autonomous and capable of handling complex tasks with minimal human intervention. We’ve built nexos.ai to be the enterprise-grade platform that makes working with AI as intuitive as working with human teams – providing the infrastructure and oversight to make sure these models perform at their best while remaining cost-effective and secure.” 

The nexos.ai platform will launch in Q1 2025, and is already being tested by several major international companies for use cases such as automated customer support. It provides access to over 200 AI models from leading providers including OpenAI, Anthropic, Google, and Meta. Key capabilities include:

• Smart model routing and load balancing to optimize performance and costs
• Intelligent caching that can significantly reduce costs for repeated queries
• Comprehensive monitoring and analytics for AI operations
• Enterprise-grade security and compliance controls
• Automated performance optimization across model providers

“nexos.ai is a critical solution for any enterprise deploying AI at scale, where managing the inherently complex ecosystem of large language models, AI agents, and applications with varying levels of autonomy becomes essential. The demand for such solutions is expected to grow exponentially in the coming months and years,” said Hannah Seal, Partner at Index Ventures. “Tomas and his team have consistently demonstrated their ability to tackle complex challenges by creating products that deliver elegant, simple solutions — and this one might be their most consequential yet.”

For more information and to join the waitlist, visit nexos.ai. 

About Index Ventures

Index Ventures is a global venture capital firm that backs exceptional entrepreneurs. We help founders turn their bold ideas into global businesses and, through the companies they build, have a long-lasting and positive impact on the world around us. Index-backed businesses are supported by an experienced team of investors, strategists, and an extensive global network built over three decades of startup investing. Working side-by-side through the scale-up journey, we forge deep and long-lasting relationships with founders and their teams across many industries and geographies.

About Creandum

Founded in 2003, Creandum is a leading pan-European early-stage venture capital firm. The firm’s portfolio of 150+ companies includes some of Europe’s most successful tech companies across a wide range of industries, including Spotify, Klarna, Depop, Trade Republic, Pleo, and neo4j. Today, every sixth company is a billion dollar company or more. Creandum’s advisory teams are based in Stockholm, London, Berlin, and San Francisco and offer extensive operational expertise to support the funds’ portfolio companies from seed to exit to become global category leaders. Learn more at www.creandum.com.

About nexos.ai

nexos.ai is a cutting-edge AI infrastructure company providing a centralized platform for enterprises to seamlessly integrate and manage multiple AI models. Founded in 2024 by Tomas Okmanas and Eimantas Sabaliauskas, who also co-founded several bootstrapped global ventures including the $3B cybersecurity unicorn Nord Security and Oxylabs, nexos.ai addresses the urgent enterprise need to efficiently deploy, manage, and optimize AI models within organizations. Originating in the ecosystem of Lithuania-based tech accelerator Tesonet, the company attracted its first investment of $8M in early 2025 from Index Ventures, Creandum, Dig Ventures, and a number of prominent angel investors.