Unclear What the kept model rows are and what creates them is not stated.
What
/model switches the AI model Claude Code uses. In a remote session, where Claude Code runs in the cloud and you connect to it, the picker changes in two ways:
/modelnow looks for kept model rows saved for the session. If there are any, it opens a new picker showing them. If there are none, it uses the previous picker. This sits behind themodelCataloggate, and when that gate does not apply,/modelprints a system message instead.- The list of available models for a cloud session is now cached for each session and refreshed. Before, it was fetched once each time the picker opened.
Why
In cloud sessions the model picker can show models kept for that session and should open faster, since it no longer refetches the full list every time.
Names in the bundle/model
/model
Choose a permission mode modified, high confidence
| Has [`ANTHROPIC_DEFAULT_SONNET_MODEL`](/docs/en/model-config#environment-variables) set | Its value, or Sonnet 5 if its value is Claude Sonnet 5.5 or Claude Opus 5.5 |see the edit
/model
claude-on-vertex-ai modified, high confidence
curl https://aiplatform.googleapis.com/v1/projects/MY_PROJECT_ID/locations/global/publishers/anthropic/models/claude-opus-5-5:rawPredict \see the edit
/model
fast-mode modified, high confidence
Fast mode is available only on the following models. If you were using fast mode on an earlier model, [migrate to a model that supports fast mode](https://platform.claude.com/docs/en/models/opus-5-5/migration-guide).see the edit
/model
Desktop application modified, high confidence
* **Model**: pick a [model](/docs/en/model-config#available-models) from the model picker toward the right end of the row. You can change the model during the session.see the edit
/model
Get started with the desktop app modified, high confidence
Select a model from the model picker toward the right end of the row under the prompt box. See [models](/docs/en/model-config#available-models) for a comparison of the available models. You can change the model later from the model picker.see the edit
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added since
A small documentation edit on Error reference touched a line naming /model after this was published.
* Reduce concurrency: avoid running many parallel subagents, or switch to a smaller model with `/model` for high-volume scripted runserrors see the edit
Confirmed since
Anthropic's documentation has since written up /model, on The MCP Registry.
> The MCP Registry is currently in preview. Breaking changes or data resets may occur before general availability. If you encounter any issues, please report them on [GitHub](https://github.com/modelcontextprotocol/registry/issues).registry/about see the edit
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
What the kept model rows are and what creates them is not stated.
Anthropic's documentation agrees
/model on Choose a permission mode