Your LLM bill isn't a mystery, it's a missing layer

Automated excerpt

A routing layer evaluates each request and sends the easy stuff to a cheaper model. An agent doesn't make one model call, it chains tool calls, retrieves context, and often invokes the model multiple times to complete a single task. Gateways that operate at the Model Context Protocol layer can bound tool calls, data source access, and context size per session, which closes both gaps with the same control.

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