Business & TrendsNovember 02, 2026
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Trajectory teaches AI models to learn
Startup Trajectory has raised $45 million in a Series A round led by Sequoia at a $300 million valuation. The company builds tools that let non-technical experts post-train AI models.
#funding#fine-tuning#continual learning#Sequoia
🔥 What happened
Trajectory, an 18-person startup from three Stanford classmates, raised $45M Series A at a $300M valuation led by Sequoia, with Nvidia and Bain participating. Its platform automates post-training: customers connect their app, the model learns from feedback and keeps improving.
💡 Why it matters
Until now, companies needed expensive forward-deployed engineers or in-house research teams to fine-tune base models for law or finance. Trajectory makes it nearly automatic – Harvey and Rogo already use it. That could make specialized AI dramatically cheaper and faster to deploy.
⚡ Our take
Continual learning over RSI hype: Trajectory keeps humans in the loop – smart, but the competition with Thinking Machines and Applied Compute will be brutal.
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