Callosum just raised $100m led by Atomico, Plural and DCVC. It's one of the largest seed-stage rounds in UK history, coming just five months after Callosum came out of stealth. Callosum builds software that lets AI run across many different types of chips at the same time, making it faster, cheaper and more capable.
Danyal Akarca is Co-founder at Callosum. He believes AI can only have a real economic impact once it becomes cheaper and faster to run, and that's exactly what Callosum is built to do.
The Scaling Europe show is presented by Deel. Check them out here: https://get.deel.com/ruynb7o4lfjk
Sponsors:
Chargebee: https://www.chargebee.com/events/beelieve/london/2026
SurrealDB: https://surrealdb.com/
Airwallex: https://www.airwallex.com/uk?utm_source=other&utm_medium=partner_referral&utm_campaign=v01_emea_multi_ib_dg_prtmk_mofu_scalingeurope
Lovable: https://lovable.dev/
Timestamps:
0:00 - Introduction
1:09 - Callosum's approach to AI infrastructure
5:56 - How Callosum's technology works for customers
8:48 - Callosum's new $100m round
12:33 - How Callosum built partnerships with chip companies like Cerebras
17:14 - Why Callosum wasn't built just to make chips work together
20:03 - What the $100m will fund next
24:54 - Why cost is becoming as important as speed for AI buyers
28:03 - Who Danyal thinks will win the AI stack over the next three years
33:03 - Why London has become a serious AI hub
