This report synthesises findings from 12 peer-reviewed papers addressing the following research question: What architectural innovations improve transformer performance on multi-step logical reasoning v16. 11 claims were extracted from source literature; 9 were independently verified against retrieved documents. An automated multi-reviewer quality assessment produced a score of 7.6/10. This report is a machine-generated literature synthesis and does not constitute original research.Research goal: What architectural innovations improve transformer performance on multi-step logical reasoning v16Autonomous literature synthesis. Automated review score: 7.6/10. Full text and citation available at Assignee Research.