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Trajectory

United States

series-a$45M raisedAI & MLAI InfrastructureDeveloper Tools

◆ Total Raised

$45M

◆ Stage

series-a

◆ Location

United States

◆ Founded

2026

◆ Team size

11-50

◆ About Trajectory

A platform for post-training artificial intelligence models based on user feedback.

◆ What sets it apart

It turns real-world application usage, user feedback, edits, and corrections into recurring post-training cycles so models can continually improve on a company’s specific tasks.[1][2][3]

◆ Sectors

AI & MLAI InfrastructureDeveloper ToolsEnterprise Softwaremachine learning operations

◆ Business

ModelSaaS

CustomerBusinesses and product teams building specialized AI applications, including legal, medical, financial, customer-support, and developer-product companies.[1][5]

◆ Notable

  • Raised $45 million in a Series A round led by Sequoia at a reported $300 million valuation.[1]
  • Built a platform used by Harvey and Rogo to post-train open-source models for legal and financial workflows.[1][5]
  • Reached 18 employees approximately one year after founding.[1]

◆ Backing funds on Raise

◆ Funding rounds

series-a$45M

2 Nov 2026

Led by Sequoia, Sequoia Capital

With Nvidia, Bessemer Venture Partners, Bain Capital Ventures, Bessemer

Source ↗

◆ Explore the market

◆ FAQ

What does Trajectory do?

A platform for post-training artificial intelligence models based on user feedback.

Where is Trajectory based?

Trajectory is based in United States, founded in 2026.

How much has Trajectory raised?

Trajectory has raised $45M in tracked funding and is currently at the series-a stage.

Who has invested in Trajectory?

Investors in Trajectory include Sequoia, NVIDIA, Bessemer Venture Partners and Bain Capital Ventures.