
Claude Pro vs Max vs API: What the Plans Actually Cost a Heavy User
Anthropic sells Claude in multipliers and the API in tokens. Converted into one unit: where Pro, Max 5x and Max 20x stop being the cheap option.
ログイン状態を保つために Cookie を使用しています。 Cookieポリシー
Cookieを使用しています
CalculatorAIは、ログイン状態を維持し、設定を記憶するためにCookieを使用しています。オプションのCookieは、サイトの利用状況を把握するのに役立ちます。 Cookieポリシー
What AI actually costs once you run it — API bills, agent loops, tokens, and whether a subscription or a key is cheaper for the way you work.
Tools these guides use

Anthropic sells Claude in multipliers and the API in tokens. Converted into one unit: where Pro, Max 5x and Max 20x stop being the cheap option.

Five MCP servers add ~55,000 tokens to every Claude request. Here is what that costs a month, what the popular servers do, and the three fixes that work.

A support reply priced on five models, a system prompt resent 10,000 times, an agent loop and reply length — the four numbers that decide an AI bill.