15 Claude Mistakes That Are Quietly Costing You Tokens
The three from the video, plus twelve more, with the setting path and the source for every one
Why this list exists
Almost every "Claude is worse today" post is a context problem wearing a capability costume. The window is finite, most of what fills it was never typed by you, and the parts you did type are often working against the model rather than with it.
Nothing here is a prompt template. Every item is a thing to stop doing or a setting to change, and where a vendor has published a figure or a phrasing, it is quoted rather than paraphrased.
The three in the video are 1, 2 and 3. The rest are the ones that only show up once a session gets long or a workspace gets crowded.
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