Copilot Pro includes 1,500 AI credits a month, worth $15 at one cent each, and GitHub guarantees only the 1,000 base credits.
In our model one agent session costs 3.4 credits on Claude Haiku 5.5 and 302.8 on Claude Fable 5.1, so 1,500 credits cover between 5 and 439 sessions.
Upgrade to Pro+ rather than paying overage once you regularly overspend by about 2,900 credits, because $29 buys 5,500 more credits.