Torus
YC S26San Francisco, US · Founded 2026 · 6 employees · Hiring · 3 known investors
Torus is an AI system that analyzes engineering documents such as P&IDs, datasheets, and specifications to identify cross-document inconsistencies and automate engineering workflows. The platform serves engineering firms and project teams managing capital-intensive infrastructure projects like substations, pipelines, and treatment plants.
Advanced ManufacturingAI & Machine LearningEnterprise SoftwareSaaSConstructionEnergyAIIndustrialUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (S26)
Torus was founded in 2026 by Marcus Lima and Rahul Thayil.
ML
Marcus Limain𝕏Co-Founder & CEOMarcus Lima is CEO and co-founder of Torus, which develops agentic engineering tools for capital project engineering firms. He previously founded Heimdal, a direct air carbon capture technology and infrastructure company, and holds degrees from Oxford and Cambridge.
RT
Rahul ThayilinCo-Founder & CTORahul Thayil is a co-founder at Torus (YC S26) and previously founded Orion, an AI-based threat intelligence and response automation platform.
Investors · 3
Funding
SEC filings, press & company announcements$200M disclosed across 1 of 2 rounds · 2024–2025
- $200MraisedSep 2025 · 4 sources
Magnetar Financial LLC (lead)
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
In the news
Frequently asked questions
- What does Torus do?
- Torus is an AI system that analyzes engineering documents such as P&IDs, datasheets, and specifications to identify cross-document inconsistencies and automate engineering workflows. The platform serves engineering firms and project teams managing capital-intensive infrastructure projects like substations, pipelines, and treatment plants.
- Who founded Torus?
- Torus was founded by Marcus Lima, Rahul Thayil in 2026.
- Who are Torus's investors?
- Torus's investors include Y Combinator, Magnetar, Magnetar AI Ventures.
- How much funding has Torus raised?
- Torus has disclosed $200M raised across 1 of its 2 known rounds.
- Where is Torus headquartered?
- Torus is headquartered in San Francisco, US.

