Artificial Analysis Announces Intelligence Index v4.2

Artificial Analysis posted on X that it released Intelligence Index v4.2. The company said it is accelerating parts of its planned v5 release through interim updates to match frontier models. The post states that v4.2 adds more complex and realistic tasks plus additional private test sets intended to reduce gaming. The changelog entry notes the addition of AA-Briefcase, described as the company's agent. The announcement includes an attached screenshot showing two characters. No further details on scoring changes or model rankings appear in the post.