During April 2026, this developer contributed to the UKGovernmentBEIS/inspect_ai repository by implementing Chat Template Usage Controls for vLLM model evaluations. The feature introduced user-configurable options to bypass chat-template rendering for base models, allowing evaluation workflows to become both faster and more flexible. The technical approach centered on Python programming and AI development, leveraging feature-flag-like controls to streamline the evaluation pipeline. Collaboration was demonstrated through co-authored commits, ensuring accurate code attribution. No major bugs were addressed during this period, but the work focused on reducing render overhead and clarifying configuration, ultimately accelerating evaluation cycles and improving testing efficiency.