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Multi-Provider LLM Router, or How I Got Tired of Forgetting Which API Format I Had To Use
If you've ever built an application that integrates with multiple LLM providers (Anthropic, Google, OpenAI, DeepSeek), you already know the pain:
Each provider has its own distinct Python SDK.
Streaming responses using Server-Sent Events (SSE) requires divergent parser logic.
Thinking / Reasoning blocks are formatted completely differently.
I recently extracted the core streaming router from my platform into an open-source FastAPI template. Here is how it works.
Obje...






