Takagi developed a pricing system enhancement for the gemini-live-2.5-flash-native-audio model in the juspay/langfuse repository, focusing on supporting text, audio, image, and video token types. The work involved designing a modality-specific pricing configuration, refactoring pricing keys to remove redundancy, and aligning the model with Vertex AI semantics for future scalability. Using TypeScript and JSON, Takagi applied skills in API design, backend development, and data modeling to create a clearer and more maintainable pricing surface. The changes reduced configuration friction and established a scalable foundation for onboarding future model variants, demonstrating thoughtful engineering within a focused project scope.