Tag: a2a

All the articles with the tag "a2a".

• Many Agents: Subagents, Communication and Orchestration

  Updated:16 Oct, 2026

  Splitting a task across agents buys clean contexts and parallelism, and costs coordination and lost information. Why subagents exist; roles; communication topologies; the A2A protocol; the standard orchestration patterns; a token-cost model, on real document sizes, of one agent against a lead with six workers (a context a quarter to two-fifths the size and far fewer sequential steps whatever the assumptions, a token bill that can go either way, and only 8% of the source reaching the lead); and the published evidence on when multi-agent systems win and when they lose.