The DecoderFeatured7171Anthropic claims that a single agent is superior to a multi-sub-agent architecture in terms of quality, cost, and latency.
Anthropic indicates that a single context-loaded agent is often superior to a multi-sub-agent architecture in terms of quality, cost, and latency, and releases a migration toolkit to help teams evaluate whether to merge sub-agents. Anthropic claims that new models starting from Opus 4.5 can directly manage complex plans in a single loop, with a single-agent architecture running about twice as fast as a multi-agent solution in a single comparison.
Why it matters: Anthropic based on enterprise deployment experience gives a judgment that a single agent is better than multiple sub-agents, and lists the applicable boundaries and migration paths.