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[BUG] subagents too slow and cost more tokens #4911
Description
Environment
- Platform (select one):
- Anthropic API
- AWS Bedrock
- Google Vertex AI
- Other:
- Claude CLI version: 1.0.64
- Operating System: macos
- Terminal: iTerm2
Bug Description
I am unable to investigate the cause, as the agents provide no debug information to let me know. However, from the statistics, the sub-agents consume an excessive number of tokens.
For the same task, in the main task with clear clearing, it is only 2-3k tokens, at most no more than 10k. But for the sub-agents, it is 160K, 3m.
that task only writes one file, reads some files and context. The context is large, but I believe the way context is passed with the main control window must be different.
Done (12 tool uses · 153.8k tokens · 3m 32.2s)
Activity
SamPeng87 commentedon Aug 1, 2025
I am very curious whether subagents inherit the main agent's thinking mode. For example, if I use "think hard" in a slash command, will the subagents also activate "think hard"?
github-actions commentedon Aug 1, 2025
Found 3 possible duplicate issues:
If your issue is a duplicate, please close it and 👍 the existing issue instead.
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github-actions commentedon Aug 15, 2025
This issue has been automatically closed as a duplicate of #4527.
If this is incorrect, please re-open this issue or create a new one.
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github-actions commentedon Aug 23, 2025
This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.