YC Summer 2025 Engineering, Product and Design Startups

Y Combinator's Summer 2025 batch included 26 Engineering, Product and Design startups. Of these, 26 remain active, 0 have been acquired, and 0 have shut down.

• Omnara (4 people) — Mobile & Web Interface for Claude Code & Codex
• F2 (15 people) — The AI platform for private markets investors
• Monte (3 people) — Continual Learning for Agents
• Cactus (8 people) — Low-latency AI engine for mobile devices & wearables
• Magnitude (2 people) — The best coding agent for open models
• bitrig (3 people) — Vibe code, test, and deploy Swift apps. All from your iPhone.
• Cyberdesk (2 people) — Self learning computer use agent for developers
• Proliferate — Manage a team of agents from your desktop
• Autosana (4 people) — AI agents for E2E testing across mobile & web
• Floot (4 people) — The easiest way for non-coders to build apps with AI.
• SigmanticAI (2 people) — The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs…
• Hera (5 people) — AI Motion Designer
• stagewise (2 people) — The Open Source Agentic IDE
• Idler (13 people) — Reinforcement learning environments.
• Wafer (6 people) — AI that makes AI fast
• Panels (1 people) — Audio Data for AI Labs
• BootLoop (3 people) — Firmware in minutes, not months - rigorously tested on real hardware
• Embedder (6 people) — AI Agents for Firmware
• Synthetic Society (2 people) — Synthetic Users to Simulate Real Users
• TraceRoot.AI (1 people) — Open source self-healing layer for AI agents
• Datafruit (2 people) — The AI workspace for software implementations
• Lark (5 people) — The E2E testing layer for AI-driven development
• Topological (2 people) — Physics-based foundation models for CAD optimization.
• Stellon Labs (2 people) — Building tiny frontier AI models that run on edge devices
• Nozomio (5 people) — product lab solving context in ai
• Interfere (7 people) — Production visibility for teams that ship fast