What changed
Announced May 12 and effective June 1, each plan includes base credits equal to its price, which GitHub says won’t change, plus a flex allotment that can vary over time. Pro is $10 with $5 of flex (about $15 of usage), Pro+ is $39 with $31 of flex ($70) and Max is $100 with $100 of flex ($200). Existing monthly Pro and Pro+ subscribers got the extra usage automatically, and Max was first offered as an upgrade to existing Student, Pro and Pro+ subscribers.
Who it affects
Individual Copilot subscribers, especially heavy Pro and Pro+ users.
What to do
Plan around the fixed base credits rather than the flex amount, which can change.