Microsoft has flipped Copilot from a flat monthly fee to consumption billing just as agentic workloads arrive to burn through credits at a rate that makes the old pricing look like a bargain.
The era of predictable AI bills ended on June 1, 2026. That's when GitHub moved Copilot to usage-based billing, replacing its premium request model with GitHub AI Credits tied to token consumption. Two weeks later, on June 16, Microsoft made Copilot Cowork generally available and did the same thing to its enterprise collaboration agent, shifting it to metered billing and telling customers that autonomous agents are too expensive and too unpredictable to keep under the old per-seat model. The flat fee is gone. The meter is running.
The math explains why Microsoft moved when it did. A standard Copilot query, summarizing an email or drafting a paragraph, consumes a modest number of tokens. An agentic session, where the model plans a multi-step task, calls external tools, evaluates intermediate outputs, and iterates on results, can consume roughly 1,000 times more. A developer refactoring a legacy codebase in a single afternoon can burn through a week's worth of credits before lunch. Reports from Visual Studio Magazine within days of the June 1 switch described developers reporting
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