10k lines ~$250 in OpenAI API calls (no plan)

45 million lines would get to ~$1.125 mil for the linux kernel.

950k lines for Bun would get to $23,750

use whatever math you like ofc.

Does an Anthropic/employee pay that, no. Even if it's at a loss in terms of company revenue, it's worth burning the private capital for all kinds of other reasons.