Under the hood
Useful3 Signal3
Cost tracking is now per session, can be snapshotted, and flags costs priced without a rate.
What's wrong with this entry?
Anonymous. No account, no email.
What
The cost and usage tracker gained an owning session id, snapshot and restore of totals, per-model usage and the logical start time, and a flag marking that some model cost was priced without a known rate. It also registers a transcript recorder, so usage can be written into the transcript.
Evidence
hasUnknownModelCost
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.
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v2.1.239
Cost is computed as a multiplied token subtotal plus web search
Both mention cost tracking
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v2.1.242
Cost summary can note that figures use your organization's rates
Both mention cost