Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.228,
Internal ChangesSection of the release
What
Thinking deltas now always carry an estimated token count, sending null when there is none rather than omitting the field, and readers turn that back into an absent value. Usage records default to a null output token breakdown, and accumulated compaction blocks now keep the encrypted content from the delta.
Evidence
output_tokens_details: null
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
