# Callosum Technologies

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/callosum-technologies

- Industry: Software
- Headquarters: London, UK
- Website: www.callosum.com
- Total disclosed funding: $100M
- Latest round: Seed (Aug 20, 2026)
- Investors on record: 5

## About

Based in London, UK, founded in 2025, Callosum Technologies Ltd. focuses on creating Intelligent Systems that integrate diverse chip architectures. The company was co-founded by Jascha Achterberg and Danyal Akarca (CEO as of 2026). In August 2026, Callosum Technologies Ltd. raised USD 100 million in seed funding led by Atomico, with participation from DCVC, Norrsken VC, Sovereign AI and Plural.

Callosum Technologies Ltd. is dedicated to developing advanced infrastructure that facilitates the co-evolution of heterogeneous chips and intelligence systems. Their core offerings include Intelligent Systems that integrate various chip architectures and computational models, which enhance capabilities and cost efficiencies. These solutions cater to multiple industries, including artificial intelligence, data processing, and high-performance computing. Their clientele primarily consists of research institutions, technology companies, and chip manufacturers across North America, Europe, and Asia, aiming to leverage innovative AI technologies.

The revenue model of Callosum Technologies Ltd. is primarily B2B, emphasizing partnerships with research organizations and technology firms. Their transactions often involve collaborative agreements, allowing clients to access their infrastructure in exchange for licensing fees or subscriptions. This approach enables clients to benefit from Callosum's technology without extensive in-house development. Additionally, the company may explore direct sales of its flagship products, integrating various computational architectures into user-friendly applications tailored for specific industries.

The company plans to use the August 2026 funding to expand its AI computing platform, build new global compute partnerships, and improve software that matches AI workloads to the most suitable chips and models.

## Funding rounds

- Seed, Aug 20, 2026, $100M — Atomico, DCVC, Norrsken VC, Plural, Sovereign AI

## Investors

- Atomico (https://capitalatlas.ai/funds/atomico) — Seed
- DCVC (https://capitalatlas.ai/funds/dcvc) — Seed
- Norrsken VC (https://capitalatlas.ai/funds/norrsken-vc) — Seed
- Plural (https://capitalatlas.ai/funds/plural) — Seed
- Sovereign AI (https://capitalatlas.ai/funds/sovereign-ai) — Seed