London-based AI infrastructure startup Callosum has raised a $100m seed round led by Atomico, with support from Plural and the UK Sovereign AI Fund.
News
August 20, 2026
Callosum raises $100m seed led by Atomico to tackle AI compute bottlenecks
UK startup’s platform helps developers route workloads across different models and chips to reduce costs
2 min read
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# AI chips# Deeptech# Artificial intelligence# Hardware# Atomico# Callosum# Kanishka Narayan# Plural# Startup Fundraise# UK Sovereign AI Fund

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