Thoughtworks says its agentic AI built an enterprise platform in four weeks

SG Kartik at Thoughtworks describes a production enterprise platform, multiple backend services, a web frontend, cloud infrastructure and automated tests, built entirely by an agentic AI working from natural language prompts, with no code written by a human. The agent read existing files before editing, fixed bugs with minimal changes, coordinated edits across services and applied security defaults unprompted. Kartik estimates the project would have taken 96 weeks by traditional delivery; the agent completed it in four. He frames the shift as moving engineers toward specification and review, while cautioning that the comparison reflects one project rather than a general benchmark.