Anthropic reports 90.2% gains from multi-agent. Cognition publishes 'Don't Build Multi-Agents'. A side-by-side reading of the two camps' primary sources, plus a decision framework for single vs multi.
What surfaces on the second read of Anthropic's Advisor Tool. This isn't new architecture — it's a temporary fix shaped by 2026 pricing. A pattern that disappears once Opus prices drop, and eleven other papers from the same period are quietly moving the same way. The anchor of the series.
Anthropic reports 90.2% gains from multi-agent. Cognition publishes 'Don't Build Multi-Agents'. A side-by-side reading of the two camps' primary sources, plus a decision framework for single vs multi.
What surfaces on the second read of Anthropic's Advisor Tool. This isn't new architecture — it's a temporary fix shaped by 2026 pricing. A pattern that disappears once Opus prices drop, and eleven other papers from the same period are quietly moving the same way. The anchor of the series.