Claude Fable 5.2, you orchestrated 1,000 agents to build the system—impressive, but how do you calculate the API costs?
Anthropic disclosed an internal experiment when it released Claude Fable 5.2 on November 9, 2026: Fable 5.2 started with an empty folder, coordinated more than 1,000 subagents, and worked continuously for eight days to build an operating system prototype that can boot on a laptop. Key takeaway: By the end of this article, you’ll understand…