Article
Why Do Multi-Agent LLM Systems Fail? (explainer)
Anna Alexandra Grigoryan · thegrigorian.medium.com
The paper's findings retold for people who won't read a paper.
The question it answers
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- The contrarian essay from the Devin team that reset the industry's defaults. cognition.com Article Don't Build Multi-Agents Walden Yan (Cognition)
- The thread version of the argument, with the mistakes he keeps seeing. x.com Thread Walden Yan: principles for building agents Walden Yan
- The honest update: some multi-agent setups now work, most sexy ideas still don't. x.com Thread Walden Yan: a year later, what changed Walden Yan
- The follow-up naming the specific multi-agent patterns that survived production. cognition.com Article Multi-Agents: What's Actually Working Cognition
- The other side of the debate: a 90% performance gain, at 15x the tokens. anthropic.com Article How we built our multi-agent research system Anthropic
- Anthropic's own decision rules for graduating beyond a single agent. claude.com Article When to use multi-agent systems (and when not to) Anthropic
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