What it is
Nobody has written a line about this one. It is not in any of Anthropic's reference tables and no changelog entry here carries a description of it. It is in the build, which is the whole of what this page can claim.
Presence across releases
1Build by build
23One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
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.
Names beside it
Every environment variable in the inventory starting claude_code_model, up to twelve of them.
CLAUDE_CODE_MODEL_CAPABILITIESA new CLAUDE_CODE_MODEL_CAPABILITIES env var lets you manually force model capability flags on or off v2.1.268
CLAUDE_CODE_MODEL_CATALOG_URLThe model list, aliases and defaults can now come from a signed remote catalog document rather than only from app releases. v2.1.257
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 environment variable does. All environment variables.