“Development Cost of ARC GPT-4o Prototype”, Ryan Greenblatt2024-06-17 (GPT-4 nonfiction, AI economics)⁠:

Nice! Do you have a sense of the total development (and run-time) cost of your solution? “Actually getting to 50% with this main idea took me about 6 days of work.” I’m interested in the person-hours and API calls cost of this.

I was pretty inefficient on iteration, so around $40,000. Around 6 person days of development work, though a considerable amount of hours on each day.