The AI Models Index helps teams compare model releases before upgrading....
https://sergiossplendidcolumn.timeforchangecounselling.com/how-long-was-claude-fable-5-1-in-2026-the-107-day-claim-needs-a-paper-trail
The AI Models Index helps teams compare model releases before upgrading. Verified public release dates and blind-vote checks show what changed and how models perform. Across 178 releases, a 16% regression rate helps make upgrade risks easier to spot.