This report synthesises findings from 14 peer-reviewed papers addressing the following research question: What is the impact of million-token context windows on multimodal reasoning accuracy in Gemini 1.5 Pro versus prior versions. 11 claims were extracted from source literature; 10 were independently verified against retrieved documents. An automated multi-reviewer quality assessment produced a score of 7.9/10. This report is a machine-generated literature synthesis and does not constitute original research.Research goal: What is the impact of million-token context windows on multimodal reasoning accuracy in Gemini 1.5 Pro versus prior versions?Autonomous literature synthesis. Automated review score: 7.9/10. Full text and citation available at Assignee Research.