Anthropic large agent teams tasks
Internal 24-hour tasks for teams of 1-100 agents: build a company knowledge base, or formalize a theorem in Lean.
New in the Opus 5.5 card. Measures capability and alignment of large agent teams.
- Made by
- Anthropic
- Released
- September 2026
- Kind
- Multi-agent games
- Level
- Research frontier
- Scored
- Checked automatically
- Answers
- Agent task
- Tasks
- Kept private
- Last in a system card
- September 2026
- Last model added
- September 2026
1
System card reports it, from 1 lab
No scores here yet
No lab, leaderboard or Epoch AI run has reported a score for Anthropic large agent teams tasks yet.
Labs report it only in system cards
We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.
One system card reports it
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| Sep 22, 2026 | Claude Opus 5.5 system card | Large agent teams, 24-hour tasks, no overall: knowledge base 0.74 and Lean formalization 0.68 with 100 agents (single agent 0.53 and 0.39), printed on charts, slightly different model version (8.12.3, Figures 8.12.3.A and B) | Capabilities |
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