claude.com
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ksl
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TL;DR
– Run /clearbetween tasks. This prevents prior irrelevant context from being sent back to the model, which can reduce token usage.
– Set your model and effort level before you start. Changing either one mid-conversation can bust your prompt cache, which can increase token cost.
– @-mention files instead of naming them. The file gets attached to your message directly, which saves a Read call, or a search if Claude has to go find it.
– Add quiet flags to noisy commands, or run them in a subagent. Command output is added to the conversation just like a file, and stays there for the rest of the session.
– Run /context once in a fresh session. It shows what’s loaded (CLAUDE.md, MCP tool definitions), so you can cut out anything unnecessary.
– /compact before you take a break from your keyboard. The prompt cache expires after an hour, and summarizing a conversation is much cheaper while it’s still cached.
