Path Robotics is a Columbus, Ohio autonomous welding robotics company founded in 2018 by brothers Andy Lonsberry (CEO) and Alex Lonsberry (CTO) out of Case Western Reserve University. Path builds AI-powered intelligent welding cells that automate metal fabrication for defense shipyards, utility and energy infrastructure, data centers, and heavy industry.
"AI-powered welding that adapts in real time — seam by seam, just like a human would." — path-robotics.com/obsidian
| Product / Tech | What it is |
|---|---|
| Obsidian | Physical-AI reinforcement-learning agent trained inside Path's proprietary Weld World Model on tens of millions of welded inches. Runs at the edge of each cell. |
| Weld World Model | Proprietary simulator/world model that captures pre-, during-, and post-weld data; feeds back into Obsidian training. |
| Intelligent Welding Cells | Fully autonomous welding cells sold on a consumption / CapEx-free model. Claimed 4x productivity, 30% lower cost, 97%+ first-pass yield. |
| Rove (April 2026) | Mobile welding system mounted on a quadruped platform; extends Path beyond fixed-cell applications. |
| Sensor Stack | 2 cameras + 4 lasers delivering 360-degree sub-millimeter awareness around the torch; neural-network filtering removes false reflections in real time. |
- Defense (shipyards, military manufacturing)
- Utility & energy infrastructure
- Data centers
- Heavy industry / large fabrications
Notable customers and announced deployments include HII (America's largest military shipbuilder), Saronic, LAD Services, Tycrop, Mine Rite Technologies, and Millerbernd.
- Andy Lonsberry — CEO, Co-Founder
- Alex Lonsberry — CTO, Co-Founder
- Frank Klein — Board member (Rocket Lab COO)
- Geoffrey Chatas — Board member (Yale University CFO)
- Heather Carroll — Chief Revenue Officer
- Joe Onderko — Chief Evangelist
- Mike Renn — EVP, Global Operations
- Andrew Lein — VP of Product
- Matthew Randle — CISO & VP of Product Reliability Engineering
| Round | Date | Amount | Notes |
|---|---|---|---|
| Series C | 2021 | $100M | Reported by Robotics 24/7 |
| Series D | Oct 2024 | $100M | Led by Matter Venture Partners and Drive Capital |
| Total raised | ≈$271M | Investors include Drive Capital, Matter Venture Partners, Tiger Global, Addition, Yamaha Motor Ventures |
Headcount as of Q1 2026: ~198 employees.
| Surface | Status |
|---|---|
| Public REST/GraphQL API | None |
| Developer portal | None |
| OpenAPI / AsyncAPI / Postman | None |
| Public SDKs / CLIs | None |
| Webhooks / Events | None |
| Public GitHub organization | github.com/path-robotics — 50 public repos, almost entirely upstream open-source forks (ROS, protobuf, abseil, ceres-solver, pytorch3d, gRPC, OpenTelemetry C++, tensorflow, fmt, mimalloc, etc.) used as internal build dependencies. No published developer artifacts, no documented external API surface. |
| RSS / Changelog | None public |
| Status page | None public |
Path Robotics' commercial surface is physical welding cells sold on a consumption / per-weld basis, not a developer API. Obsidian is a closed, proprietary on-device model; the Weld World Model is internal training infrastructure. This repo is profiled for portfolio and landscape completeness — to anchor the autonomous-welding and physical-AI segment of the API Evangelist network alongside Figure Robotics, Agility Robotics, Boston Dynamics, and other embodied-AI players where Naftiko's governed-AI thesis intersects with industrial deployment.
- Website: https://www.path-robotics.com
- About: https://www.path-robotics.com/about
- Obsidian: https://www.path-robotics.com/obsidian
- Demo / Contact: https://www.path-robotics.com/demo
- News: https://www.path-robotics.com/news
- Careers: https://www.path-robotics.com/careers
- GitHub: https://github.com/path-robotics
- LinkedIn: https://www.linkedin.com/company/path-robotics
- Crunchbase: https://www.crunchbase.com/organization/path-robotics
- x-type: company
- x-tier: 3 (no-apis)
- Profiled: 2026-05
- Artifacts:
apis.yml,README.mdonly — no OpenAPI / AsyncAPI / JSON Schema / capabilities generated because no public API surface exists to model. The GitHub org was reviewed; no first-party Path Robotics SDK, CLI, or spec was identified — only upstream OSS forks.
Maintained by Kin Lane, API Evangelist.