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General Trajectory

AI for the physical world

General Trajectory is using AI to solve the world's most important problems, from autonomous defense to scientific R&D.
Active Founders
Joshua Belofsky
Joshua Belofsky
Founder
Recent graduate focusing on AI for the physical world. Background is in academic ML research.
Company Launches
🤖 General Trajectory - A Foundation Model for Humanoid Robots
See original launch post

https://youtu.be/iIdum8FrMIw

What is it?

A foundation model that helps humanoid robots pick up unseen objects and perform real-world work. It generalizes to novel objects and scenes, including cases where prior SoTA models achieve 0% success.

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The problem

Humanoid robots can do backflips and kung fu, but still struggle with economically useful work. Dexterous manipulation is the main bottleneck to useful physical labor.

Our approach

We collect an efficient set of human demonstrations and train a reward model to improve the base model's grasps.

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The result is strong generalization: up to 63% gains on difficult objects where the best baselines achieve 0%, while maintaining near-perfect performance on standard objects. Full details are available in our technical post.

The physical world is 80% of global GDP. We believe this research represents progress toward a future in which AI systems are not limited to computer work.

Open-source

We open-sourced our teleop stack!

https://github.com/GeneralTrajectory/dex-teleop

It uses vision + wrist trackers instead of data gloves → about $500 in hardware vs. ~$5,000.

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Call to action

If you are interested in AI for the physical world (scientific R&D, defense, etc.), please reach out!

Previous Launches
YC Photos
General Trajectory
Founded:2024
Batch:Winter 2025
Team Size:1
Status:
Active
Location:San Francisco
Primary Partner:Harj Taggar