AI Tools · Framework
AI API pricing cliffs — September 2026: verified Sonnet 5 list and the Copilot promo step-down
The verified fact: Claude Sonnet 5 lists at $2/$10 per million tokens with no scheduled price step. Copilot promo pools step from 3,000/7,000 to 1,900/3,900 after 1 September 2026 — verified against GitHub's billing docs.