What happened
Trajectory raised a $45M Series A at a $300M valuation led by Sequoia, with Nvidia, Bessemer and Bain Capital Ventures participating.
Why it matters
The 18-person, year-old startup lets non-technical domain experts post-train foundation models, potentially widening who can customize AI beyond engineers.
WHO IT HITSLawyers, doctors, and other domain experts gain a way to tailor foundation models to their fields without engineering skills, while investors place a $300M bet on that approach.
Summaries like this, every morning.
Trajectory is a year-old, 18-person startup founded by engineers who previously worked at Google DeepMind and Apple. Its platform targets a specific gap: letting domain experts such as lawyers and doctors adapt foundation models without needing engineering skills.
The $45M Series A, led by Sequoia with Nvidia, Bessemer and Bain Capital Ventures participating, values the company at $300M. That investor group signals confidence in the post-training approach at a relatively early stage. Disclosed customers include Harvey, Rogo, Decagon, Mercor and Nvidia, suggesting early uptake among professional-services and AI-native firms.
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