Commercial transition
Previous stateThe commercial boundary between fixed-cost user subscription licensing and usage-based billing across Microsoft's new Copilot experiences was not documented as one consolidated model; prior governed research separately tracked the 2 November 2026 CSP default for new Microsoft 365 Copilot Business licences.
→New stateUser subscription licences provide fixed-cost access for Copilot Chat and Office everyday AI, while usage-based billing applies to Cowork, Code, Autopilot, long-running agentic capabilities and frontier models.
Who is affected
Organisations planning Microsoft Copilot access, budgets and controls across everyday AI and agentic workloads.
Action required
Separate fixed-seat and usage-metered Copilot workloads in procurement, budget and governance plans, and retain the existing 2 November 2026 CSP-default milestone as a distinct transition.
Evidence boundary
Microsoft proves the USL-versus-UBB role split. No price amounts, negotiated terms or availability beyond the stated rollouts are inferred; the prior CSP default chronology is preserved rather than overwritten.
Timeline
- Commercial billing basis documented
Microsoft distinguished fixed-cost USL everyday AI from UBB agentic and frontier-model capabilities.
- Prior governed CSP default milestone
The separate Microsoft 365 Copilot Business CSP usage-billing default for new licences remains part of the family chronology.
Official sources
- Introducing the new Copilot with Home, Code and AutopilotMicrosoft · 2026-09-25 · Official Microsoft Copilot commercial-model authority