The whole hunk
from line 84, old and new numbered
/
lines
from line 84
8484 Fable 5.1 requires Claude Code v2.1.257 or later. If a request for it from an older version fails, see [Claude Code does not support this model](/docs/en/errors#claude-code-does-not-support-this-model). Run `claude update` to upgrade. For availability under zero data retention, see [Model availability under ZDR](/docs/en/zero-data-retention#model-availability-under-zdr).
8585</Note>
8686
87On the Anthropic API, the `/model` picker lists a Fable model only after the server reports it available for your organization. When you type `/model fable` or a Fable model ID, Claude Code checks availability with the server directly, so a typed selection can succeed even when the picker doesn't list the entry.
87On the Anthropic API, a Fable model appears in the `/model` picker unless [`availableModels`](#restrict-model-selection) or [organization model restrictions](#organization-model-restrictions) exclude it. When your organization can't use Fable at all, for example under [zero data retention](/docs/en/zero-data-retention#model-availability-under-zdr), the row stays in the picker grayed out, with a note on why.
8888
8989#### Fable and usage credits
9090