Callosum

Callosum

AIInteroperable AI ComputeB2B📍 United Kingdom

Callosum is a UK startup focused on building an interoperable AI compute platform that enhances the efficiency of AI applications. The company aims to create a collaborative environment for various vendors to work together, making AI workloads faster, cheaper, and less energy-intensive. This funding round is one of the largest seed rounds in Europe, highlighting the significant interest in AI infrastructure.

Total raised
Undisclosed
across 2 rounds
Latest round
Seed
Aug 25, 2026
Known investors
6
led by Atomico
Press coverage
3
outlets tracked

Is this your company?

Claim this profile to get matched with investors who fund AI startups in United Kingdom.

Claim this profile →

🏆 Featured in Datapile’s Q3 2026 UK Funding Report

Read the Q3 2026 UK report →
Add this badge to your site
<a href="https://datapile.co/reports/q3-2026-uk-startup-funding" target="_blank" rel="noopener" style="display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:9999px;background:#0B1224;color:#ffffff;font:600 13px/1.2 -apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;text-decoration:none;border:1px solid #7C5CFF"><span style="display:inline-block;width:11px;height:11px;border-radius:3px;background:#7C5CFF"></span>Featured in Datapile&rsquo;s Q3 2026 UK Funding Report</a>

Funding history

  1. 2
    $5MSeedAug 25, 2026

    Led by Atomico, Dunamu&Partners, UK AI Fund

    Announcement ↗
  2. 1
    100MSeedAug 24, 2026
    Announcement ↗

Founder

Danyal Akarca
Danyal Akarca
CEO & Co-founder

Investors in Callosum

Backers from this company's tracked funding rounds.

  • AAtomicoLead investorVC firm
  • PPluralVC firm
  • DDCVCVC firm
  • UUK Sovereign AI FundVC firm
  • DDunamu&PartnersLead investorVC firm
  • UUK AI FundLead investorVC firm

Callosum in the news

Coverage of this company's funding, tracked by Datapile.

More AI companies

Recently funded startups in the same category.

Related on Datapile