Indexed from the September 30 newsletter. Linked-source claims have not been independently verified.
Development
Sonnet 5.5's longer output raises reported task costs
The issue distinguishes lower nominal pricing from total task expenditure driven by output length.
Claim
The issue reports Sonnet 5.5 ranking second on the Artificial Analysis index but costing 50% more per task than Sonnet 5 because of its thoroughness.
Reported metric: second; 50% pricier
Reporting date: (not necessarily the event date)
Sources
Attribution and reporting linked by this record; links do not imply independent verification.
- Welcome to September 30, 2026 (theinnermostloop.substack.com)
- Source linked by the September 30 issue (x.com)
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