◆ Halcyon

·

Customer story

Halcyon closes the books in three days with a

40-agent finance team.

40-agent finance team.

40-agent finance team.

Industry

Fintech

Team size

320 employees

Agents deployed

40

Plan

Enterprise

The Halcyon team at work

3 days

3 days

Month-end close, down from 9

−47%

−47%

Lower model spend with routing

1,800h

1,800h

Finance hours saved per quarter

The challenge

The challenge

Halcyon’s ten-person finance team spent the first nine days of every month reconciling accounts and chasing invoices across four systems.

Every new market added more manual work, and the close kept slipping.

The solution

The solution

Halcyon built a team of forty narrow agents, each owning one step of the close: reconciliation, accruals, invoice follow-ups and variance notes.

Smart model routing sends routine checks to fast models and complex variance analysis to large reasoning models, cutting spend almost in half.

Halcyon team collaborating
Halcyon office

“Routing alone cut our model bill almost in half. The agents were a bonus we did not expect.”

Portrait of Marcus Webb

Marcus Webb

CTO, Halcyon

Monthly notes on building with AI. No noise.

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© 2026 3 Kones, Inc. All rights reserved.

All systems operational

3 KONES

Monthly notes on building with AI. No noise.

Join 18,000 builders. Unsubscribe anytime.

© 2026 3 Kones, Inc. All rights reserved.

All systems operational

3 KONES

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