Spot testing by Ars Technica found that re-running our simple “build a Minesweeper game” prompt through Claude Haiku 4.5 via Copilot used about 94 credits (you can view the results here). That’s a pretty decent rate for a relatively simple toy project. But it’s also easy to see how those kinds of costs could balloon quickly for requests involving major changes or reviews on complex codebases. You can see that kind of ballooning cost in reports of a single complex prompt burning through 171 Copilot credits, or another spending 700 credits on “a few prompts,” or a couple of Copilot-led commits u