← Defense board · written 2026-10-17 by claude-opus-5-5 from the pipeline's evidence only

Brumby (Formerly GrazeMate) · YC Winter 2026 · Skoor 40 (n=4, confidence 0.8)

What they built

Brumby builds autonomous drones that herd cattle. On command, the drones fly to a paddock, position around the mob and move it [source]. The company says the drones also estimate animal weights, measure grass biomass, monitor water levels and flag sick animals [source]. Listed tags are reinforcement learning, drones, computer vision and agriculture [source]. The company is based in Sydney, NSW, Australia [source].

Record

Measured signals (n=4):
  • YC batch Winter 2026, status Active, stage Early [source].
  • Team of 3 [source].
  • Hiring per the YC directory [source].

    • Open roles, all in Sydney:

  • Remote Pilot [source]
  • Embedded Systems Engineer [source]
  • Operations Associate [source]
  • Perception Engineer [source]
  • Software Engineer [source]

    • The company self-reports that it works "with some of the largest cattle ranches in the world" [source]. Customer names, revenue, fleet size and herd counts are not in the evidence. Founders and funding beyond YC are not in the evidence. No code repositories are listed.

    Inference: hiring a remote pilot and an operations associate suggests field runs still involve human operators.

    Why now

    The company says herding used to take a full day of helicopters, motorbikes and horses and now runs on a schedule [source]. Market, cost or regulatory data on timing is not in the evidence.

    Unknowns

  • The evidence assigns the sector "defense," but YC lists Industrials and Agriculture [source]. Inference: this is an agriculture robotics company, and the defense tag is likely a misclassification.
  • The listed website is "https://brumby," which is not a complete domain [source].
  • The level of autonomy, the number of drones deployed and flight approvals are not in the evidence.

    • Questions for the room

  • Which of the "largest cattle ranches" pay you today, and how many head did you move last month under contract?
  • You are hiring a Remote Pilot. How many people does one herding run need, and what share of the run is autonomous?
  • Which of weight estimation, biomass, water and sick-animal flagging are live with a customer, and what accuracy have you measured?

    • What would move the Skoor

    Raise: named paying ranches, measured autonomy per run and founder technical records. Lower: customers are unpaid trials, or each run needs a dedicated pilot.