[HN] CostRouter – Cut AI API costs 60% by routing to the cheapest capable model

Summary

CostRouter is an API gateway designed to cut AI API costs by up to 60% by intelligently routing requests. It analyzes each request's complexity and directs it to the cheapest capable model, such as Llama for simple queries, Gemini for medium tasks, and GPT-5 or Claude for complex reasoning. This solution addresses the common issue of overspending on expensive models for basic AI API calls.

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