Skip to content

Latest News

Vals AI Says Claude Opus 5.5 Keeps 80% of Score at 16% Cost

Vals AI Says Claude Opus 5.5 Keeps 80% of Score at 16% Cost

Nov 04, 2026
vals.ai

Vals AI reports that four of seven frontier models kept at least 80% of their Vals Index score at half the cost or less when run at their lowest reasoning setting. Claude Opus 5.5 held 80% of its score at 16% of the cost, researcher Derrick Liang writes. In 22 of 56 model-benchmark pairs, cheaper settings matched leaderboard scores.

Page 1 of 612
Next
Showing 1 - 10 of 6116 articles