You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Model DocsArea: what it touches
ImprovementsKind: in v2.1.242,
What probably matters to youSection of the release
What
The bundled model catalog and migration guide now state Sonnet 5 at $2 input and $10 output per million tokens. The earlier framing of $3/$15 with an introductory $2/$10 rate expiring on 2026-08-31 is gone. This changes what Claude tells you about cost, not what the API charges.
Details
The migration guide's token advice changes with it: Sonnet 5's roughly 30% higher tokenizer count is now paired with a lower per-token rate, rather than described against unchanged pricing.
Evidence
per-token pricing is lower than Sonnet 4.6: $2/$10 vs $3/$15 per MTok
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
