“Five sessions in five worktrees use the 5-hour window about five times as fast as one, and Anthropic puts agent teams at about 7x the tokens of a single session when teammates plan before they code.”

A resource every worktree shares by design: the account's quota. Notable details: subagents default to 20 at once (CLAUDE_CODE_MAX_CONCURRENT_SUBAGENTS), Anthropic suggests 3-5 teammates; on API keys the whole organization shares one limit; and 'Anthropic says 60 requests a minute may be enforced as one a second, which is how a burst of parallel subagents gets a 429 below the stated limit.' This is a gateway vendor with a product to sell, and the cost table is its own traffic estimate, so use it for the mechanism (shared, bursty, org-wide) and verify limits against Anthropic's docs before citing numbers. Complements the cost-per-resolved-task point in the Codex fan-out discussion.