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HomeDocsClaude Code CLI 10 Oct 2026
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Create custom subagents changedsub-agents

Upstream edited this page at 10 Oct 2026 17:26 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 10 Oct 2026 17:37 UTC.

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366366* **The main conversation's model belongs to that family**: the subagent runs on the main conversation's exact model, including any `[1m]` suffix, so it gets the same [extended context](/docs/en/model-config#extended-context) window as the main conversation.
367367* **Claude Code can't tell the main conversation's model family, on [a provider other than the Anthropic API](/docs/en/third-party-integrations)**: this can happen with an [application inference profile ARN](/docs/en/amazon-bedrock#iam-configuration) on Amazon Bedrock that Claude Code hasn't resolved to a backing model. This case covers only the `opus` alias, and doesn't apply when you set [`ANTHROPIC_DEFAULT_OPUS_MODEL`](/docs/en/model-config#environment-variables), since `opus` then resolves to the model you set.
368368 
369An alias in `CLAUDE_CODE_SUBAGENT_MODEL` always resolves to the version the alias points to, even when it names the main conversation's family.
369An alias in `CLAUDE_CODE_SUBAGENT_MODEL` always resolves to the version the alias points to, even when it names the main conversation's family. Setting the variable to `inherit` is the same as leaving it unset.
370370 
371371Setting `CLAUDE_CODE_SUBAGENT_MODEL` by itself doesn't change the model the built-in Explore and Plan subagents run on. To change it, see [Run every subagent on one model](#run-every-subagent-on-one-model).
372372 
373373Before v2.1.251, `CLAUDE_CODE_SUBAGENT_MODEL` came first in this order and overrode both the per-invocation parameter and the frontmatter, including `model: inherit`.
374 
375Setting the variable to `inherit` is the same as leaving it unset. Before v2.1.196, that value forced subagents onto the main conversation's model and ignored the other sources.
376374 
377375Claude Code checks the per-invocation parameter, frontmatter, and environment variable values against your organization's [`availableModels`](/docs/en/model-config#restrict-model-selection) allowlist. For a blocked value, it substitutes another model:
378376 
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