Capital for
the moment
before momentum.

Backing AI founders at day zero. We are a pre-seed and seed venture fund investing in AI startups globally.

Two technology founders working together on an early prototype
Day Zero moment

Pre-seed to Series A.
Founder-first, globally.

Proof

Backing the next generation of AI.

19Portfolio companies
PreSeed and seed conviction
EarlyFounder-first capital and support
About Day Zero

Built for founders at day zero

Every great company starts at day zero -- the moment when the idea is fragile, the team is small, and the future is uncertain.

Day Zero exists to support founders at that exact moment.

We invest early, move fast, and partner closely with ambitious teams building transformative companies in AI, HealthTech, BioTech, and Automation.

Founder Support
  • AI ecosystem access
  • Hiring early engineers
  • Product strategy
  • Fundraising support
Investment Focus

What we invest in

Artificial Intelligence

Startups building the future of AI systems, applications, and infrastructure.

HealthTech

Technology transforming healthcare delivery, diagnostics, and patient care.

BioTech

Scientific innovation solving complex biological and medical challenges.

Automation

Platforms and tools automating workflows, operations, and industries.

How We Invest

How we work with founders

Founder-first capital with conviction at the earliest stage.

Stage

Pre-seed & Seed

Check Size

Flexible early-stage investment

Approach

Founder-first partnership

Support

Hands-on help from idea to scale

Portfolio

Portfolio companies

We partner with ambitious founders building the next generation of technology companies.

A

AgentLine

Communication infrastructure for AI agents across voice, SMS, and telecom networks.

Announced Date: May 30, 2026 Funding Round: Pre-seed Money Raised: $150,000
Y

Yorby AI

Applied AI platform focused on intelligent workflows and decision support.

Announced Date: Oct 14, 2025 Funding Round: Pre Seed Round Money Raised: $120K
P

PlayerZero

Developer-first tools that improve reliability, observability, and performance.

Announced Date: Jul 30, 2025 Funding Round: Series A Money Raised: $1M