Table of contents

Chapter 1 Introduction 1

  1.1 Limited human uplift from August 2025 AI models 1

  1.2 Claude Code’s leap from March 2025 to April 2026 2

Chapter 2 Methodology and detailed results 4

  2.1 Our simple prompting strategy 4

  2.2 Detailed Results 5

Chapter 3 Conclusion 8

Tables

Table 1: Claude Code Running Times and API Costs 3