Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.168 Home All releases olderv2.1.167 v2.1.169newer

New Model Family Codenames Pre-Registered

Two new model family identifiers, "fruitcake" and "macaroon", are pre-registered alongside "mythos" in the model-family detection array. These codenames are used by the same thinking-budget routing logic described above, meaning that when models with these internal names ship they will automatically inherit the same 2048-token thinking configuration without requiring a code change.

No user-facing claude-fruitcake- or claude-macaroon- models are available yet; this is infrastructure preparation.

Evidence

New array ZW_ = ["fruitcake", "macaroon", "mythos"] (search for "fruitcake").

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.168 →