YC Fall 2025 Infrastructure Startups
7 Y Combinator Infrastructure companies from the Fall 2025 batch — with team size, status, and one-liner for every startup.
- Total
- 7
- Active
- 6
- Acquired
- 0
- Shut down
- 1
Y Combinator's Fall 2025 batch included 7 Infrastructure startups. Of these, 6 remain active, 0 have been acquired, and 1 have shut down.
- Brickanta (11 people) — Agentic AI for Society Builders
- SF Tensor (6 people) — Infrastructure for AI labs to focus on research.
- Dome (2 people) — A unified API for prediction markets, like Kalshi and Polymarket
- Amika (2 people) — Infra to build your own software factory
- Hyperspell (8 people) — Your Company Brain
- Sciloop (2 people) — Expert STEM reasoning data for frontier AI labs.
- s2.dev (5 people) — API for unlimited, durable, real-time streams
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