AIBearisharXiv – CS AI · Apr 67/10
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CostBench: Evaluating Multi-Turn Cost-Optimal Planning and Adaptation in Dynamic Environments for LLM Tool-Use Agents
Researchers introduce CostBench, a new benchmark for evaluating AI agents' ability to make cost-optimal decisions and adapt to changing conditions. Testing reveals significant weaknesses in current LLMs, with even GPT-5 achieving less than 75% accuracy on complex cost-optimization tasks, dropping further under dynamic conditions.
🧠 GPT-5