Observed 14 August 2026
Navigation only — a new "Optimizing for cost and intelligence" link was added to the docs sidebar menu.
what changed matterssummary written by a model — check it against the diff below
A restriction or obligation was removed or reworded — 1 line containing binding language went away. Loosenings are rarely announced.
Captured before saidwhen trimmed pages down to the document itself, so navigation menus and cookie banners appear in this diff alongside the text that matters. Later changes are the document only.
+1 −1 · ade3cd1 → 634ecd6 · 634ecd60fbed · live page
anthropic/model-deprecations.txt14 Aug 2026
18 unchanged lines Console Log in Search Ctrl K Models Models overview Model IDs and versioning Choosing a model Introducing Claude Fable 5 and Claude Mythos 5 What's new in Claude Sonnet 5 What's new in Claude Opus 5 Upgrade between model versions Model deprecations Model cards System prompts Pricing Models overview Model IDs and versioning Choosing a model Optimizing for cost and intelligence Introducing Claude Fable 5 and Claude Mythos 5 What's new in Claude Sonnet 5 What's new in Claude Opus 5 Upgrade between model versions Model deprecations Model cards System prompts Pricing Console Loading Loading 210 unchanged lines
Underlined words mark what moved within a rewritten line. Nothing here is interpreted — this is the difference between two captures, and the conclusion is yours.