Do Claude's memory features cost extra?
Anthropic publishes no memory token price. Remembered text is replayed as input tokens, so your cost tracks how much you replay and whether it is cached.
#prompt-caching
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Multi-model routing for coding agents
Routing coding agents across models throws away the prompt cache that keeps them cheap. When routing pays, when pinning wins, and the arithmetic behind it.
KV cache vs prompt cache explained
The KV cache is RAM your server pays for on every request. Prompt caching is a bill someone else discounts. Only one can break a model load.
How to pay less for Claude
Seven levers that cut a Claude bill: annual billing, right sizing the plan, cheaper models, smaller context, prompt caching, batch jobs, and real discounts.
Claude prompt caching: the break-even math
Cache writes cost 1.25x and reads 0.1x, so a Claude prefix pays back on its second use. Derive your own break-even, then prove it from the API.
How much is 1M tokens in Claude?
Claude bills per million tokens, input and output priced separately. Here is the arithmetic that turns a token count into a number on your monthly bill.