February 2026 — Google Gemini CLI: Implemented model-aware, centralized core tool definitions and CLI tooling. Consolidated core tool definitions across the CLI to enable model-dependent behavior with model-specific schemas and snapshots, improving extensibility and reliability. Expanded and completed centralization for core tools (including Group 1: Replace, Search, Grep) to reduce duplication and simplify maintenance. Added model-specific snapshots for coreTools to enhance test coverage. Business value includes faster delivery of model-aware features, lower maintenance costs, and safer multi-model tooling; technical impact includes better testability, clearer model boundaries, and a scalable foundation for future tooling across models.

November 2025 focused on delivering a targeted UX improvement for Gemini CLI by differentiating interactive and non-interactive modes. The feature updates system instructions and aligns CLI behavior with the selected mode, improving automation reliability and reducing user confusion. Implemented in zed-industries/gemini-cli via commit 4a82b0d891a8caed2fa3e6b5761fc785cd4dcc38 (references #12315). This work enhances business value by enabling predictable automation, improves developer efficiency, and sets the foundation for future mode-specific enhancements.