Claude Managed Agents adds dynamic workflows: 1,000 agents a run, 64 at once

TL;DR

• On 9 October Anthropic put dynamic workflows into beta in Claude Managed Agents: the agent writes a program that runs many agents in phases and combines their results.
• Anthropic's docs allow 64 agents working at once and 1,000 over a run's life, and a run lasts 24 hours by default.
• Every agent's tokens count toward the session's budget, and a run that ends completed doesn't say whether the work passed.