The 2025 AI model market is in full bloom. But each provider has its own API format, authentication method, and streaming protocol. BoxAgnts' design goal: users switch models by changing just one parameter, with all internal logic remaining unchanged.
This article dissects this abstraction across four levels:
Unified Interface: How the LlmProvider trait defines a "model provider"
Three Major API Format Comparisons: Format differences between Anthropic, OpenAI, and Google Gemini
Format Conversion: How to translate between three completely different message formats
