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AI post-training startup Trajectory raises $45M Series A at $300M valuation

This story is from 2026-11-03. It is preserved in the archive; the latest stories are on the live feed.

Trajectory, which builds AI model post-training tools for nontechnical customers, raised a $45M Series A led by Sequoia at a $300M valuation. The startup was launched about a year ago by three former Stanford classmates.

Read the full story at Techmeme ↗

Timeline · 3 reports

  1. 2026-11-03 06:30 · Economic Times Tech
    AI startup Trajectory raises $45 million in Sequoia-led Series A at $300 million valuation
  2. 2026-11-03 04:38 · DEV Community — AI
    Trajectory lands $45M Series A led by Sequoia
  3. 2026-11-03 00:05 · Techmeme
    Trajectory, which is developing AI model post-training tools for nontechnical customers, raised a $45M Series A led by Sequoia at a $300M valuation

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