During May 2026, contributed to the infiniflow/ragflow repository by delivering the OpenAI Model List Expansion feature, which added support for the gpt-5.4-mini and gpt-5.4-nano models. This update enhanced the flexibility of Ragflow’s AI backend, enabling expanded chat and vision capabilities while maintaining backward compatibility. The work focused on AI integration and model management, utilizing Python and JSON to ensure seamless model selection and future-proofing for upcoming vision tasks. Comprehensive release notes and inline documentation accompanied the changes, reflecting a methodical approach to feature delivery and code clarity. No bugs were reported or fixed during this period.