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Analysis of Claude Code's Subagent Structure and Model Assignment

·2026.06.30 22:56

Key point

An analysis of Claude Code's built-in subagent types and the fixed-model characteristic of the Explore agent.

Details

Claude Code has a total of 6 built-in subagent types, which are broadly composed of 3 main agents, 1 fork type, and 2 helper agents.

Main built-in subagent types:

  • Explore: Used for file search and code exploration. The Haiku model is fixed, and it operates as read-only (Write/Edit not allowed).
  • Plan: Used for codebase research. Inherits the performance of the higher-tier model.
  • General-purpose: Performs complex research and code modification.
  • Fork: Inherits the current session's model, tools, and history as-is to perform a new task.

In particular, unlike other subagents, the Explore agent has a fixed model selection process, so it should be noted that during complex debugging, results that differ from intent may occur due to the limits of the model's reasoning capability.

debugginganthropicclaude-codeai-agentssubagents
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