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How I cut my LLM API bill by ~60% (5 levers that actually work)
用两级模型路由和缓存技巧，轻松省下60%以上LLM API费用，实用且可操作。
After a few surprise invoices from OpenAI and Anthropic, I spent a weekend figuring out where the money actually goes when you call an LLM API. Here a…