Callosum closed a seed round led by Atomico to build systems software that matches AI tasks with suitable models and chips.
- Amount
- $100M
- Stage
- Seed
- Announced
- 20 August 2026
- Lead
- Atomico
- Other investors
- Plural, DCVC, UK Sovereign AI Fund
- Total raised
- $110M to date
- Checked
- Amount and date matched across 3 press sources