What the evidence actually says.

What Spendassay Research publishes

• Evidence reviews

  Vendor-neutral reads of the published research, effect sizes included, and the findings that argue against us reported alongside the ones that do not.

• Benchmarks

  Citable reference tables. The load-bearing column is the basis for each row, because a benchmark without a population behind it is an anecdote with a number on it.

• The AI tool price index

  Published prices for every tool in the catalog, each stamped with the date it was last read against the vendor's own page. Where no price is published, we say so.

• Methodology

  How every number is built, layer by layer, and how sure each one is. The standard the rest of this work is held to.

The byline is the company, not a persona — how that work is produced, and who runs it.

Reviews

• Does AI actually make developers faster?

  The published evidence, linked and dated, with effect sizes and a comparison table. Includes the results that cut against the case for AI tooling, because a review that only cites the favourable studies is marketing.

The sources we cite

8 published studies underpin the method. Each is listed with its finding on the methodology page, and compared side by side in the review above.