Callosum Raises $100M Seed

Callosum, a company building a global platform to unify heterogeneous compute for AI, has announced the closing of a $100M seed round. The company focuses on the orchestration of AI workloads across diverse silicon and models to optimize cost, energy, and performance.

Investors

This round was led by Atomico, with participation from Plural, DCVC, and the UK Sovereign AI Fund.

Callosum Use of Funds

Callosum plans to use the capital to scale its heterogeneous compute platform, expand its global compute partnerships, and further develop its programmable heterogeneity and Tailored Inference technology to deliver performance and cost-efficiency in AI systems.

About Callosum

Founded by Danyal Akarca and Jascha Achterberg, Callosum is an AI infrastructure company building a platform for heterogeneous intelligence. Its technology enables AI workloads to run across different models and computing architectures, allowing organizations to optimize inference for specific requirements.

Funding Details

Company Website: https://callosum.com

Company: Callosum
Raised: $100M
Round: Seed
Funding Date: August 20, 2026
Lead Investor: Atomico
Additional Investors: Plural, DCVC, UK Sovereign AI Fund
Software Category: Artificial Intelligence
Source: https://www.callosum.com/blog/seed-round