London-based Callosum raises €85.4 million in Atomico-led Seed round for AI infrastructure
The startup, which builds software to route AI workloads across different models and chips, drew backing from Atomico, Plural, DCVC and the UK Sovereign AI Fund.
AfroEuropa Newsroom
AfroEuropa desk
Callosum, a London-based startup developing infrastructure to link different artificial intelligence models and chips, has raised €85.4 million ($100 million) in a Seed round, according to EU-Startups.
The company describes its focus as "heterogeneous intelligence" and said the funding would support work on how computing is done for the next phase of AI development.
The round was led by Atomico, with participation from Plural, DCVC and the UK Sovereign AI Fund, alongside other investors and angels. The UK government launched its €573 million (£500 million) Sovereign AI initiative in April 2026 to support British AI startups in fields regarded as strategically important for economic growth and national security.
Keep reading
California Subpoenas OpenAI Over AI Models Linked to Hacking Incidents
California's attorney general has compelled OpenAI to hand over information about cybersecurity incidents involving its AI models, including a reported breach of Hugging Face.
Other highlights
Modder Adds NVIDIA Pascal GPU Support to Windows XP
A modded driver called Forceware 382.69 brings GeForce GTX 10-series cards, including the TITAN Xp, to 32-bit Windows XP.
Follow the story
One newsletter, two continents
The Bridge brings you the tech, startups, and leaders moving between Africa and Europe in one sharp email each morning. No spam, unsubscribe anytime.
