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How to Count Claude Message Tokens Before You Send the Request

This story is from 2026-09-14. It is preserved in the archive; the latest stories are on the live feed.

The annoying part of building with large-context models is not only the model call itself. It is everything that happens before it: long user input, system prompts, tools, documents, and image blocks can quietly push a request past the size you expected. This guide shows a small preflight pattern:…

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  1. 2026-09-14 01:08 · DEV Community — AI
    How to Count Claude Message Tokens Before You Send the Request

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