Funding
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Union Square Ventures

Activity from announced rounds

Activity in this selectionUnited States · Oct 31, 2026 · Oct 1, 2026

Union Square Ventures is the venture firm explicitly named by Nous Research and Efficient Computer.

Recorded funding activity

Nous develops open models and agents. Efficient develops processors, while Rune deploys computing at renewable-energy sites. The company records retain separate technologies and financing events.

Sources
Rounds participated in
3
Confirmed lead rounds
1
All roles disclosed
New companies
3
First participation on record · 0 follow-on
Funding in participating rounds
$120M
2 disclosed · full round size, not this investor’s share

By stage

Seed1
Series B1
Undisclosed1

By primary sector

AI2
Climate tech1

By country

United States3

Rounds

3 in this selection
Tolan

Tolan develops a voice-first AI companion that remembers conversations and helps people organize everyday life.

$30MUndisclosed
Lead
Mana Battery

Mana Battery develops anode-free sodium-ion cells and proprietary electrolytes for battery manufacturers.

UndisclosedSeed financing (investment amount undisclosed)
Participant
Nous Research

Open-source AI models and the Hermes agent, which retains project memory and reusable skills across tasks.

$90MSeries B
Participant