Picking top solo models for LLM teams backfires: 24.8 vs random's 45.4 on TruthfulQA
shangbinfeng · x · 2026-10-23
Key results from the multi-LLM model selection study:
- Random hiring is a lottery: score swings of ±25 points
- Hiring the individually best models can backfire: 24.8 vs random's 45.4 on TruthfulQA under multi-agent refine
- Capability-aware selection: stable teams, up to 36.1% better than random/heuristics, beating the best solo model
The paper "You're Hired: Strategic Model Selection for LLM Collaboration" recommends capability-aware selection before deploying real-world multi-LLM systems.
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