A Claude Code team member describes the new Projects coordinator

Anthropic has updated Claude Code Projects, in which a coordinator hands work to threads that run in parallel. We could not find Anthropic's own announcement, so this item rests on comments Boris Cherny posted in a Hacker News thread about a third-party write-up, where he introduced himself as "Boris from the team." He wrote that the coordinator "delegates work to threads when needed," that threads "bubble up information and questions to the main thread," and that Claude runs threads in the cloud and checks out the relevant repos without being told which. On cost he wrote: "In AB tests and evals, we've found that the coordinator has <10% token overhead compared to running sessions directly." Anthropic has not published those tests.

The thread had 62 points and 48 comments about three and a half hours after it was posted. One commenter said a single request spawned seven subagents and used up their plan's allowance in about ten minutes; Cherny replied that Claude is prompted not to use subagents unless asked, and asked for a bug report.

Why it matters: Several commenters described coordinators they had built themselves out of skills and their own tools, and a vendor version gives those teams something to compare against. The only cost figure is Anthropic's own and unpublished, so a team should measure overhead and allowance burn on its own work before retiring a homegrown coordinator.