The AI Daily Brief · Tuesday, September 8, 2026
The Artificial Analysis Intelligence Index's latest update (version 4.2) shows GPT-6 Astra scoring 61 on the intelligence index, behind Fable 5.1. However, the updated index, with increased emphasis on agency tasks, positions Astra ahead of all other models.
“Initially, Astra scored a 61 on the intelligence index. That gave it the same score as GPT-5.6 sole, and left it a full five points behind Fable 5.1.”
“The updated includes more emphasis on agency tasks, with their A briefcase test, plus a different structure and weighting on many of the existing tests.”
“In that new version 4.2 iteration, GPTs 6 Astra was still behind Fable 5.1, but was ahead of everything else.”