Anthropic's Claude Code 2.1.316 introduces CLAUDE_CODE_SUBAGENT_EFFORT, allowing for differentiated "thinking" depths for sub-agents. This feature enables main agents to use higher effort settings for planning while sub-agents performing tasks like code searching or testing can use lower, more cost-effective settings. The update also includes CLAUDE_CODE_DISABLE_ULTRATHINK to prevent accidental cost increases and clarifies the effort level hierarchy for various models and configurations. AI
IMPACT Enables more cost-effective multi-agent workflows by allowing granular control over AI "thinking" depth for different tasks.
RANK_REASON This item details a new feature and configuration options for an existing AI coding tool, Claude Code, focusing on its practical application and cost management.
- Anthropic
- Claude Code 2.1.316
- CLAUDE_CODE_DISABLE_ULTRATHINK
- CLAUDE_CODE_EFFORT_LEVEL
- CLAUDE_CODE_SUBAGENT_EFFORT
- Haiku 5.5
- Opus 4.7
- Opus 4.8
- Opus 5.5
- Sonnet-5.5
- Twinkle Model Agency
- Visual Studio Code
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