Unverified50% confidenceFactExact time
ANTHROPIC_MODEL specifies the model ID used for Claude Code's main conversation; ANTHROPIC_DEFAULT_HAIKU_MODEL specifies the lightweight model used for small background tasks (such as generating short titles or quick classification).
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Sources
50%
Confidence
Long-term
Relevance
10/14/2026
First Seen
Sources
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Unverified将Claude Code部署为轻量级用户问答机器人是技术选型误区，应使用微调后的轻量模型73% similarUnverifiedDeveloper @dani_avila7 released a modified version of Claude Code that uses Jev to classify sub-agent models, effort levels, and the main model, where the main model is only routed at the start of a session to avoid breaking the cache.70% similarUnverifiedClaude Code internally routes different tasks by model tier (Haiku/Sonnet/Opus); when the main model is switched to an open-weights model, the model ID corresponding to each tier must be explicitly specified, otherwise some background requests will fail or fall back to defaults.69% similar
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