YC Engineering, Product and Design startups
632 Y Combinator companies in Engineering, Product and Design, 63 of them from the last four batches. Its share of recent batches is 7.9%, down from 15.5% in the four batches before. About 56% are AI companies by YC’s tags.
- Signal
- Crowded
- Since 2025
- 159 vs 175 in 2023–24
- Acquired or public
- 30%
- Listed as inactive
- 31%
Share of each batch
Engineering, Product and Design companies as a share of each YC batch since 2015.
Newest entrants
Of 252 Engineering, Product and Design companies from batches up to 2021, YC lists 74 as acquired, 2 as public, 98 as active and 78 as inactive.
- Agent Relay F26 · Let your teams' coding agents message each other
- Aucert F26 · A team of expert AI agents that test mobile apps on their own.
- Boxes.dev F26 · A better place to run your coding agents.
Building in Engineering, Product and Design?
Open problems and funding on Questd for ai & infrastructure.
- Y Combinator · Requests for Startups
- Andreessen Horowitz · Big Ideas 2026
- Index Ventures · Investment Focus 2026
- IVP · Investment Focus 2026
Engineering, Product and Design companies, newest first
632 companies
- Agent RelayAI
Let your teams' coding agents message each other
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - AucertAI
A team of expert AI agents that test mobile apps on their own.
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - Boxes.devAI
A better place to run your coding agents.
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - ByteAskAI
The AI coding agent for C and C++
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - GradonAI
Legora for AEC (Architecture, Engineering, & Construction) firms
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - herdrAI
building the open agent runtime
Fall 2026Engineering, Product and Design1Ankara, Ankara, Turkey - HueAI
Test agents in realistic worlds built from production usage
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - MirrorsAI
Give AI agents the right context at the right moment
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - Munito AIAI
Open-model inference provider for Europe, private by default.
Fall 2026Engineering, Product and Design1Paris, Île-de-France, France - OnePatchAI
Automate on-call at agent-scale.
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - ORO AIAI
Continuously improving evals for agentic commerce
Fall 2026Engineering, Product and Design2Vancouver, BC, Canada - Phone HarnessAI
Let your agent control your phone
Fall 2026Engineering, Product and Design1San Francisco, CA, USA - Resin TechnologiesAI
Resin helps engineers design electronics faster and more reliably
Fall 2026Engineering, Product and DesignSan Francisco, CA, USA - RysticAI
Train models and test agents in high-fidelity simulated environments
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - SimanticAI
Firmware simulation for AI agents
Fall 2026Engineering, Product and Design4Waterloo, ON, Canada - SimulithicAI
AI users that test your app on every device and browser
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - The Company Company
The operating system for tech startups.
Fall 2026Engineering, Product and Design1San Francisco, CA, USA - VoreliosAI
Solving engineering, then using it to solve everything else
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - Workers IOAI
Simulation environments for verifying mission-critical software
Fall 2026Engineering, Product and Design2San Francisco, CA, USA - Alkera AIAI
Reliable and safe data engineering and data science agents
Summer 2026Engineering, Product and Design3San Francisco, CA, USA - Amorphic LabsAI
OpenRouter for Agent Tools
Summer 2026Engineering, Product and Design2San Francisco, CA, USA - ClickAI
Managed Agents API
Summer 2026Engineering, Product and Design1San Francisco, CA, USA - CoArenaAI
The biggest crowdsourced benchmark for Computer-Use
Summer 2026Engineering, Product and Design2San Francisco, CA, USA - Graphify Labs
On-device Knowledge Graph engine for Enterprise Software
Summer 2026Engineering, Product and Design1San Francisco, CA, USA
Sector is YC’s own label in its public company directory. See the methodology, every sector side by side, or browse open problems worth solving.