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Sweep 03 Nov 2026 · 22:27Z Build v2.1.318 536 read Stable v2.1.311 Latest v2.1.318 Next v2.1.318 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 2 Nov 2026
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Model configuration changedmodel-config

Nearest release: v2.1.317, published an hour after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 2 Nov 2026 22:34 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 2 Nov 2026 22:37 UTC.

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First seen 14 Aug 2026 this site's first read of the page
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929929| `ANTHROPIC_DEFAULT_FABLE_MODEL` | The model to use for `fable`, and the model ID Claude Code recognizes as a Fable model for [automatic model fallback](#automatic-model-fallback) on third-party providers |
930930| `ANTHROPIC_DEFAULT_OPUS_MODEL` | The model to use for `opus`, or for `opusplan` when Plan Mode is active. |
931931| `ANTHROPIC_DEFAULT_SONNET_MODEL` | The model to use for `sonnet`, or for `opusplan` when Plan Mode is not active. |
932| `ANTHROPIC_DEFAULT_HAIKU_MODEL` | The model to use for `haiku`, or [background functionality](https://code.claude.com/docs/en/costs.md#background-token-usage) |
932| `ANTHROPIC_DEFAULT_HAIKU_MODEL` | The model to use for `haiku`, or background functionality |
933933| `CLAUDE_CODE_SUBAGENT_MODEL` | The default model for [subagents](https://code.claude.com/docs/en/sub-agents.md#choose-a-model), [agent team](https://code.claude.com/docs/en/agent-teams.md#specify-teammates-and-models) teammates, and [workflow](https://code.claude.com/docs/en/workflows.md) agents that aren't assigned a model another way. Accepts an alias such as `haiku` or a full model name. A per-invocation model or a definition's `model` field, including `inherit`, takes precedence. To change that, set [`CLAUDE_CODE_SUBAGENT_MODEL_FORCE`](https://code.claude.com/docs/en/sub-agents#run-every-subagent-on-one-model) |
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935935On third-party providers, [Customize pinned model display and capabilities](#customize-pinned-model-display-and-capabilities) describes what a pinned model's row in the `/model` picker shows.
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