You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Agent SDK DocsArea: what it touches
ImprovementsKind: in v2.1.224,
ImprovementsSection of the release
What
The skill's quick reference and its feature-support notes now warn that the Messages API task_budget is advisory and counted in tokens, while a Managed Agents session budget is a hard, dollar-denominated cap enforced by the platform.
Details
The model-tier restriction (Opus 5, Fable 5, Sonnet 5, 4.8, 4.7) applies only to the Messages API form; session budgets have no tier restriction.
Evidence
Not the same thing as Managed Agents session budgets
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
