Delivered Inference Mode for set_adapter in huggingface/peft, enabling freezing of model parameters during inference to boost performance and reduce unnecessary computations. Updated API signature, core logic, and tests to cover the new inference mode. Commit reference: 0ae8586b779deb4ad772bb4b7472d07df434a5e5.

December 2025 performance summary for allenai/OLMo-core: Focused on strengthening type-safety and code quality. No new user-facing features were delivered this month; instead, concentrated on stabilizing the codebase and improving maintainability through a typing fix in NumpyInterleavedFSLDataset, accompanied by changelog documentation. This work reduces mypy-related noise, prevents runtime type issues, and aligns with established typing patterns across the project, paving the way for safer refactors and faster future development.