CScale
CScale develops optical interconnects that keep large AI computing systems communicating reliably.
$145MSeries C
ParticipantSH
Sutter Hill Ventures
Activity from announced rounds
Activity in this selectionOct 19, 2026 · Jul 22, 2026
Sutter Hill Ventures is the venture firm named by AttoTude and in CapitalG’s Celero investment account.
Recorded funding activity
AttoTude develops dielectric interconnects. Celero develops optical signal processors, while Sila develops battery materials and systems. The announcements preserve distinct components of computing and energy infrastructure.
Sources
- Rounds participated in
- 2
- Confirmed lead rounds
- 0 All roles disclosed
- New companies
- 2 First participation on record · 0 follow-on
- Funding in participating rounds
- $420M 2 disclosed · full round size, not this investor’s share
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Rounds
2 in this selectionCelero Communications
Celero develops coherent digital signal processors and analog technology for optical links that connect AI accelerators and data centers. Its validated 2nm silicon architecture is designed to move more data across scale-up, scale-out and data-center links with lower power and a path from 1.6T to next-generation 3.2T connectivity.
$275MSeries C
Participant