Dalus
Dalus is a YC Winter 2025 (W25) company. Team of 3.
About Dalus
Summary
Dalus builds model-based systems engineering (MBSE) software for hardware teams in aerospace, defense, robotics, energy, and automotive. Engineers use it to model system architecture, manage and trace requirements, run analyses, and verify designs in a shared environment built on the SysML v2 specification. It replaces fragmented documentation, siloed toolchains, and manual requirements tracking that cause misalignment and costly late-stage design changes.
Business model
Pricing tiers listed on the website; specific plan structure not detailed in available sources.
Go-to-market
Dalus targets both early-stage hardware startups and large established organizations, acquired through direct sales and demo requests, with an MCP connector that integrates the systems model into tools like Claude and ChatGPT to meet engineers in existing workflows.
From the Y Combinator listing
AI-Powered Hardware System Design Software
Dalus is an AI-powered systems engineering software to model/validate complex systems for aerospace/defense/robotics and other mission-critical industries. With Dalus, engineers can seamlessly trace requirements, perform analyses, and update information in real-time. This ensures that every team member stays aligned and informed, reducing inefficiencies and enabling faster iterations. With AI at our core, users can analyze hundreds of pages of existing engineering documentation and requirements to generate or retrieve information about the system model they are building in Dalus. We started working together on Dalus in spring 2024 after Eliot quit his job at Aerojet Rocketdyne (L3Harris) where he worked as a test/systems engineer. He experienced first-hand how silos and poor communication reduced the productivity and efficiencies in the teams he worked at. We love working with companies tackling complex engineering systems, whether they be startups just getting their feet wet or large organizations like Israel Aerospace Industries (Our design partner and biggest aerospace/defense company from Israel) Read why we started Dalus: https://dalus.io/articles/why-dalus
Facts
- B2B / B2B -> Engineering, Product and Design
- 3
- Active
- Early
Founders (1)
Score every batch against your own thesis
GPAgent's sourcing agent reads every company in a batch, scores each one against your fund's thesis in a private workspace, and lines up the founders worth meeting before Demo Day. You decide who to contact. Your scores, notes, and pipeline never appear on these pages.
How Accelerator intelligence works