Callosum Secures $100M Seed Round for AI Software Infrastructure
UK AI startup Callosum raises $100M in seed round to develop software infrastructure for AI workloads on different chips and models

Callosum, a UK-based AI startup, has successfully raised $100M in a seed round led by European VC Atomico, marking an exceptionally high-value European seed round. This significant investment also saw participation from other notable investors, including Plural, DCVC, Sovereign AI, and several angel investors.
## Introduction to Callosum Callosum is founded by Cambridge neuroscientists and is working on building software infrastructure that enables AI workloads to run on different chips and AI models. This approach is a counterview to the prevailing notion that superintelligence will emerge from a single, powerful AI model running on identical chips. By allowing AI workloads to run on various chips and models, Callosum aims to make it faster and cheaper to solve complex, real-world problems at scale.
## Challenging the Monoculture Assumption The startup challenges the assumption that AI development and greater intelligence will come through scaling a single AI model on identical chips. This process is not only energy and capital-intensive but also concentrates power in the hands of a few major players like Nvidia, OpenAI, and Anthropic. Callosum argues that real-world problems are heterogeneous and complex, requiring different capabilities to solve. Its approach has garnered support from the UK AI minister and the CEO of US chip company Cerebras, with whom Callosum has announced a partnership.
## Partnership and Impact The partnership between Callosum and Cerebras aims to make ultra-low-latency inference available where it can create the greatest impact. According to Andrew Feldman, CEO of Cerebras, integrating Cerebras into Callosum's platform enables customers to build AI systems that were previously impractical. This collaboration highlights the potential of Callosum's approach to democratize access to AI capabilities and solve complex problems more efficiently.
## Future Prospects With this significant investment, Callosum is well-positioned to further develop its software infrastructure and challenge the prevailing monoculture in AI development. As the startup continues to grow and partner with other industry players, its approach may pave the way for more diverse and efficient AI solutions. The $100M seed round is a testament to the potential of Callosum's innovative approach and its potential to make a significant impact in the AI landscape.





