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The monthly letter of the Absence Index
The Absence Report
Who AI engines name, what the evidence shows and what it means for B2B software teams.
Get a monthly reading of the public Index, one category story and the methods behind the observations. Read the evidence, then decide what is worth testing.
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286vendor-category records
14software categories
5AI engines
Inspect the September 2026 record
These are observed answers on stated dates, not a ranking or a judgment of product quality. The published records are free to read without subscribing.