Antioch, the New York robotics simulation startup that pitches itself as 'the Cursor for physical AI', disclosed a $31.4 million raise in an SEC Form D filed Tuesday. The round, part of a $32 million offering, brings the year-old company's reported equity funding to roughly $44 million and lists eight investors on the close.
What Antioch Is Building
Antioch's cloud platform lets robotics teams spin up digital twins of any robot, then run thousands of parallel scenarios to validate AI policies before touching hardware. Co-founder Harry Mellsop, previously an engineer on Tesla's Autopilot team, and co-founders Alex Langshur, Colton Swingle and Collin Schlager formally launched the company in early 2025 and closed an $8.5 million seed in April 2026.
Timing And Market Read
The disclosure lands in the middle of a robotics venture-funding blitz — global startups have raised more than $55 billion in 2026 by Dealroom's count, nearly double last year's record — and it echoes a broader pivot toward software validation as humanoid, AMR and quadruped programs scale. Rivals include NVIDIA Isaac Sim, Applied Intuition and simulation stacks inside AI-native robotics companies like Sereact and NEURA Robotics.
Use Of Proceeds
Antioch has said the capital will go toward scaling its cloud infrastructure, adding integrations for more robot form factors, and expanding a Boston go-to-market presence. Mellsop has drawn a deliberate parallel to Cursor, arguing that autonomy teams need a purpose-built developer surface that turns hardware validation into fast, iterative software work.
Reporting based on coverage from SEC EDGAR, TechCrunch, SiliconANGLE and AlleyWatch.