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What Code to Change When Switching LLM APIs: Three Must-Change Configs and Four Compatibility Checks
When staying on the OpenAI-compatible protocol, switching models usually requires changing only base_url, api_key, and model—but if your code uses length parameters, sampling parameters, streaming usage, tool calling, or structured outputs, verify each against the target model.
How to Write a Tool Calling API? Four-Layer Cross-Model Differences and the Loop Skeleton
This article provides a portable tool calling loop skeleton, breaking down four layers of differences across models: function declarations, trigger control, return structure, and multi-step termination, along with adapter design, verification methods, and a regression checklist.
How Long Does LLM API Caching Last? Choosing Between 5 Minutes and 1 Hour
Learn how to choose between 5-minute and 1-hour cache TTL for LLM APIs based on request interval distribution, and understand the trade-offs in hit rate, cost savings, and prefix stability.
