Devin

What Devin actually meters

An ACU measures the work Devin performs in a session, not the time you have it open. Cognition lists two components: the number and complexity of actions Devin takes, covering planning, context gathering, task execution, browser actions and code execution, plus virtual machine time and network bandwidth, which it describes as typically a small fraction of the total.

The exclusions are the part worth knowing, because they are unusually generous:

• Waiting for your response costs nothing

• Waiting for a test suite to run costs nothing

• Setting up and cloning repositories costs nothing

• A sleeping session costs nothing, and Devin sleeps automatically after 30 minutes of inactivity

Enterprise customers can move that sleep timeout anywhere between 5 and 120 minutes.

One quirk deserves a line of its own. Windows sessions consume approximately 9% more usage than equivalent Linux sessions. Very few vendors publish an operating-system surcharge at all, let alone quantify it.

What Cognition does not publish is the conversion rate: how many ACUs a given piece of work costs, or what one ACU costs in dollars on self-serve. The mechanics are documented, the exchange rate is not.

How credits and quotas work

Self-serve and Enterprise run the same meter through different wrappers. Enterprise draws ACUs against the volume on its order form. Self-serve spends the plan's included quota first, then prepaid on-demand credits.

Pro carries both a daily and a weekly quota. Max removes the daily cap and raises the weekly one, which is the actual difference between a $20 plan and a $200 one.

Teams is the interesting structure. Every member holds either a full seat at $40 a month, which includes a Pro-equivalent quota and Devin Desktop, or a flex seat, which is free. There is no limit on flex seats beyond the 200-member cap, and flex members draw on on-demand credits shared across the whole team. A team can therefore put everyone on Devin and pay only for the people who actually use it.

Enterprise admins can cap each member's monthly consumption through usage policies.

What happens when you hit the limit

Work continues on credits. Past the included quota, self-serve accounts draw prepaid on-demand credits, and Enterprise accounts keep consuming against their contracted volume.

Devin bills at the end of the billing cycle, or whenever usage exceeds $2,000, whichever comes first. That threshold is a real control: it caps how much unbilled usage can accumulate before Cognition collects.

Enterprises consuming ACUs without an active billing schedule now see a warning, added in June 2026 to stop usage running ahead of payment coverage.