Worked on the google/langfun repository to integrate the Claude 3 Opus model into the VertexAIAnthropic class, expanding the llms package’s support for advanced language models. Used Python to define the model identifier and configure explicit cost and token parameters, enabling customers to manage usage and expenses more transparently. Focused on API integration and LLM integration, the approach centralized model imports and parameterization, laying groundwork for future extensibility. No major bugs were reported, indicating stable code quality. This work enhanced the versatility of the llms ecosystem and provided a structured foundation for adding additional models with minimal friction in future updates.