Microsoft launches Copilot Cowork with pay-as-you-go pricing
AFP reports that Microsoft launched Copilot Cowork on June 16 as generally available, an agentic AI assistant that independently carries out office tasks such as drafting documents, building spreadsheets, and sending emails. The tool requires a paid Microsoft 365 Copilot subscription but moves to usage-based billing -- denominated in Copilot Credits at $0.01 each -- charging per task based on compute consumed. Microsoft calls this its first pricing model change in nearly two decades. Charles Lamanna, Microsoft EVP for Copilot and agents, told AFP the new plan will be "like you're filling up your gas tank at the pump." At general availability, Cowork runs on Anthropic Opus 4.8 and Sonnet 4.6; Frontier customers can also access GPT 5.5. Per Axios, Microsoft is exploring a hosted DeepSeek V4 option as a lower-cost alternative.
What happened
Microsoft made Copilot Cowork generally available worldwide on June 16, 2026, per an official post written by Charles Lamanna, EVP for Copilot, Agents, and Platform. Copilot Cowork is an agentic AI assistant that executes complex, long-running, multi-tool tasks -- it can draft documents, build spreadsheets, send emails, and independently handle entire workflows. The tool requires a Microsoft 365 Copilot user subscription license and layers usage-based billing on top.
Pricing structure
Per-task cost is denominated in Copilot Credits at $0.01 each, calculated from four inputs: model use, context retrieval, tool calls, and runtime. Microsoft classifies tasks as light, medium, or heavy based on reasoning depth and number of knowledge sources. Lamanna told AFP the new plan will be "like you're filling up your gas tank at the pump," and called it "the only way to make the model work" -- noting that some users run hundreds of tasks per week, driving costs sharply higher under flat-rate billing. Microsoft describes this as its first pricing model change in nearly two decades. Cowork is disabled by default; admins can set spending caps at the tenant, group, and user levels and receive usage alerts.
Models in use
At general availability, Cowork runs on Anthropic models -- Opus 4.8 and Sonnet 4.6. Frontier tier customers can also access GPT 5.5. A Microsoft-fine-tuned model named Cowork 1 is expected in the coming weeks, designed for everyday tasks at substantially lower cost. Per Axios, Microsoft is also exploring a hosted version of DeepSeek V4 as an optional lower-cost model; if adopted, it would run entirely on Azure with enterprise data-residency and compliance controls, and Microsoft says it has added safeguards including changes to reduce model bias.
Context
AFP and the Microsoft blog both cite a customer who compared nearly 4,000 documents across two product versions -- work that would have taken weeks -- as a representative heavy-task use case. More than half the Fortune 500 was using Cowork during the three-month Frontier preview. Billing began June 16; Frontier users who ran tasks between March 30 and June 16 get a grace period through July 1.
What to watch
- •Whether Cowork 1 or a DeepSeek option materially lowers per-task costs for heavy workloads.
- •How enterprise procurement and chargeback processes adapt to variable AI billing; cost telemetry and budget controls are now critical deployment requirements.
- •Competitor pricing moves from Google Cloud and AWS on agentic AI tools.
Scoring Rationale
Copilot Cowork GA is a significant enterprise AI milestone: it represents Microsoft's first major pricing model change in nearly two decades and the mainstream deployment of a multi-model agentic AI running on Anthropic Opus 4.8/Sonnet 4.6 with Fortune 500 adoption. The DeepSeek exploration angle adds further strategic significance. This sits at the top of the Notable tier -- a clear strategy shift with direct implications for enterprise AI cost management and deployment practices.
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