Microsoft’s GitHub Copilot has just received a major upgrade that brings Anthropic’s latest lightweight model, Claude Haiku 5.5, into every supported IDE. The new model delivers performance comparable to Anthropic’s flagship Sonnet 5 while using roughly one‑twentieth of the tokens, dramatically lowering API costs. The rollout also introduces a routing layer—MAI Code 1.1 Flash—that automatically decides whether a coding request should run locally on the user’s machine or be sent to the cloud, leveraging a new on‑device model and OS‑level sandboxing for tighter security and faster response times. These developments signal a shift toward more cost‑effective, hybrid AI‑assisted development tools that keep sensitive code closer to the user while still tapping cloud‑scale power when needed, a trend that could reshape how developers and enterprises adopt productivity AI across the software stack. [[1]]