YC Winter 2026 Infrastructure Startups

Y Combinator's Winter 2026 batch included 24 Infrastructure startups. Of these, 24 remain active, 0 have been acquired, and 0 have shut down.

• Cascade (2 people) — Distilling Proprietary Intelligence
• IncidentFox (2 people) — AI SRE agent that triages, coordinates, and fixes production incidents
• The Token Company (2 people) — Compression middleware that improves LLM outputs
• Wayco (5 people) — AI operator for medlegal cases
• Luel (12 people) — Turning everyday words and actions into usable training data.
• Captain (2 people) — Give AI agents accurate knowledge search that scales
• Piris Labs (8 people) — The Networking Layer of AI
• Fern (2 people) — RL environments for robotics companies
• Orthogonal (2 people) — Agentic Payments for APIs
• Compresr (4 people) — LLM context compression for better accuracy
• Maven (2 people) — Payments Infrastructure for Voice Agents
• Ossus (3 people) — Intelligence for cultural institutions
• Autumn AI (2 people) — Stalk your prospects at scale.
• Mantis (3 people) — Digital Twins of humans
• Didit (16 people) — Infrastructure for identity and fraud.
• Tensol (2 people) — AI Employees for Startups, Built on OpenClaw
• RunAnywhere (5 people) — The default way of running on-device AI at Scale
• Salus (2 people) — Guardrails to validate your agent's actions before they execute
• Chamber (4 people) — The AIOps Agent for ML Teams
• Oximy (8 people) — Take command of the AI your company already runs on.
• Shofo (4 people) — The World's Largest Video Library
• Klaus AI (2 people) — Fast and Safe OpenClaw on the cloud
• Moda (6 people) — Continual learning for AI agents
• Cumulus Labs (2 people) — The Fastest Multimodal Inference OS