You'll notice
Useful5 Signal4
Sonnet 5 is priced at $2/$10 per million, so your reported spend drops by about a third.
What's wrong with this entry?
Anonymous. No account, no email.
/cost
What
The price table built into Claude Code adds a $2 per million input, $10 per million output tier and moves Sonnet 5 onto it from the previous $3/$15 tier. /cost and usage estimates bill against this table, so reported Sonnet 5 spend drops by about a third. Unconditional, with no flag involved.
Details
- The new tier also sets cache writes at 2.5 (5-minute) and 4 (1-hour) and cache reads at 0.2 per million tokens.
- This is a static data table shipped in the build, not a figure fetched from the API, so it applies immediately on upgrade.
Evidence
pricing: "tier_2_10"
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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v2.1.242
Cost summary can note that figures use your organization's rates
Both mention cost
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v2.1.223
API error metadata is recovered from wrapped errors
Both mention reporting