behavesAs
A Claude Code settings key, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.
An unrecognized model id now produces an error telling you to update or map it with behavesAs or modelOverrides.
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.257.
In the changelogs
2Releases whose published page names behavesAs.
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v2.1.315
Unknown model message now names the Claude Code version you need
When Claude Code does not know a model, the message now reads "Requires Claude Code v<version> or later"
found in this entry's text
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v2.1.257
New model-catalog fallback/mapping error message for unrecognized models
An unrecognized model id now produces an error telling you to update or map it with behavesAs or modelOverrides.
found in this entry's text, named in this entry
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.