YC Fall 2025 Engineering, Product and Design Startups

23 Y Combinator Engineering, Product and Design companies from the Fall 2025 batch — with team size, status, and one-liner for every startup.

Total
23
Active
22
Acquired
0
Shut down
1

Y Combinator's Fall 2025 batch included 23 Engineering, Product and Design startups. Of these, 22 remain active, 0 have been acquired, and 1 have shut down.

  • Arcten (2 people) — Lab working on long-horizon autonomous research and coding agents
  • Perseus (4 people) — Applied Lab focused on Search in Latent Spaces.
  • Lemma (2 people) — Production Monitoring for AI agents
  • Rovr (3 people) — AI FDE Engine that runs your engineering workflows
  • Compyle (2 people) — The coding agent that actually collaborates with you
  • Semiotic (3 people) — Studio-Grade Design at Scale
  • MOVEdot (10 people) — AI Agents for Hardware Engineering
  • Minro (2 people) — Identify churn risk and stay close to users at scale
  • AtlasGrid (6 people) — Accelerate Product Iteration
  • hillclimb (4 people) — Training Data for Recursive Self-Improvement
  • Sol (2 people) — Code and browse in the same place
  • Sourcebot (3 people) — Helping humans and AI agents understand massive codebases
  • Fastshot (3 people) — Lovable for mobile apps
  • Rivet — Visual editor to design in production code
  • Coasts (2 people) — Localhost service isolation and orchestration for git worktrees
  • Aspect (3 people) — Intelligent media storage for creative teams.
  • Locus (2 people) — Payment infrastructure for AI agents
  • Caddy (4 people) — Your partner for everyday work, lives in iMessage
  • OpenBuilder (3 people) — The vibe coding platform where builders actually finish.
  • Specific (2 people) — AWS for coding agents
  • The Context Company (2 people) — Monitor AI agents and understand user behavior
  • dari.dev (2 people) — The Production Layer for AI Agents
  • Antigen (3 people) — Continuous offensive security for the enterprise.

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