Computer Use Is 45x More Expensive Than Structured APIs | Hacker News

Hacker News users debated a claim that AI computer-use workflows can cost about 45x more than structured API calls.

Commenters said the gap may come from model limits, inefficient prompts, vision-based browsing, and weak agent harnesses—not just the model itself.

The thread emphasized that many consumer apps are not designed for AI, so browser agents must infer actions from messy UIs while APIs provide clean structure.

The discussion suggested a DOM/vision hybrid, better UI design, and AI-friendly interfaces like MCP could narrow the cost and reliability gap.

Overall, the post argued that APIs remain the better fit for many tasks today, while browser agents are most useful when no structured interface exists.