I compared 7 GPT models for code review on 4 PRs: bugs, false positives and cost

A developer compared seven GPT models for code review across four pull requests (PRs), evaluating bugs found, false positives, and cost. GPT-6.1 Sol performed best in bug detection with 4 bugs found and 0.5 false positives, costing $0.23-$0.25 per PR. GPT-6 Luna was the cheapest at $0.013 per PR but found fewer bugs (1.5). The test involved private code, and costs covered model usage only, with AI assisting in checking the findings.

This report uniquely compares seven GPT models for code review, detailing their performance on bug detection, false positives, and cost per PR, unlike general model comparisons.