Callosum
Orchestrating AI workloads across heterogeneous models and chips
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About
Callosum is a London-based AI infrastructure company building a platform that breaks AI workloads into component tasks and orchestrates each one across different models and specialised chips, optimising for cost, energy and speed. It offers Tailored Inference through a family of APIs over heterogeneous compute and has announced partnerships with Cerebras and Rebellions. Callosum was the first investment of the UK Sovereign AI Fund and announced a $100M seed round in August 2026 led by Atomico with participation from Plural, DCVC and the UK Sovereign AI Fund.
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- callosum.com
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