You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
EffortArea: what it touches
ImprovementsKind: in v2.1.284,
ImprovementsSection of the release
Unclear The overall effect a user will notice is not known.
What
Effort is how hard Claude reasons before answering. When you switch model with /model, Claude Code now applies the effort level directly. Before, it skipped effort levels that had come from ultracode and recorded an ultracode setting in its state. Both of those special cases are gone, and the one-off step that moves users onto new effort defaults no longer considers ultracode either.
Why
Changing model may now change your effort level or ultracode state differently from before.
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 sinceA small documentation edit on Claude Code on Amazon Bedrock touched a line naming /model after this was published.The [setup wizard](#sign-in-with-bedrock) offers a 1M context option when it pins models. To enable it for a manually pinned model instead, append `[1m]` to the model ID. See [Pin models for third-party deployments](/docs/en/model-config#p…amazon-bedrocksee the edit
Confirmed sinceAnthropic's documentation has since written up /model, on spawn.sh: called once per claimed work item.The SDK's [Client-side MCP helpers](https://platform.claude.com/docs/en/agents-and-tools/mcp-connector#client-side-mcp-helpers) convert the server's tools into the runnable tools the worker accepts. Install an MCP SDK alongside the Anthrop…managed-agents/self-hosted-sandboxessee the edit
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtThe overall effect a user will notice is not known.
Anthropic's documentation agreesAnthropic's documentation has since written up /model, on spawn.sh: called once per claimed work item.
Anthropic's release notes agreeFixed the /model picker showing "+1 model" below the list after scrolling to the last model; the count now covers only the models below the…
