# Trajectory raises $45M Series A at $300M valuation

Digest AI · Business & Funding · published 2026-11-02T23:13:53Z

Canonical: https://digestai.news/story/trajectory-raises-45m-series-a-at-300m-valuation

## Summary

Trajectory, a startup founded by three Stanford alumni with backgrounds at Google DeepMind and Apple, has announced a $45 million Series A funding round. The company values at $300 million and is led by Sequoia, with participation from Nvidia, Bessemer Venture Partners, and Bain Capital Ventures. The 18-person team aims to automate the post-training of AI models, allowing them to learn from feedback and improve at specialized tasks without requiring internal research teams or expensive consultants.

The platform uses an approach called continual learning, where businesses connect open-source models to their applications to collect performance feedback. Trajectory then uses this data to retrain the models. Co-founder Ronak Malde described the goal as creating AI that acts like an experienced professional rather than a new graduate. Current customers include Harvey, Rogo, Decagon, Mercor, and Nvidia, who use the tool to enhance models for legal and financial analysis.

Trajectory distinguishes itself from recursive self-improvement by keeping humans in the loop to ensure safety. The startup competes with Thinking Machines Lab, Applied Compute, and Prime Intellect. It recently made its post-training platform publicly available, emphasizing a user-friendly interface designed for non-technical experts in fields like law and medicine.

## Key points

- Trajectory raised $45 million in Series A funding at a $300 million valuation.
- The platform automates post-training, allowing AI models to learn from user feedback.
- Customers include Harvey, Rogo, Decagon, Mercor, and Nvidia for specialized model tuning.

## Why it matters

This funding supports tools that lower the barrier for enterprises to customize AI models, potentially reducing reliance on specialized engineering teams and accelerating deployment in regulated industries.

## Sources

1. [Trajectory raises $45M to make AI model training accessible to nontechnical experts](https://techcrunch.com/2026/11/02/trajectory-raises-45m-to-make-ai-model-training-accessible-to-nontechnical-experts) (TechCrunch AI, 2026-11-02)

## Cite

Digest AI, "Trajectory raises $45M Series A at $300M valuation", 2 November 2026, https://digestai.news/story/trajectory-raises-45m-series-a-at-300m-valuation

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