EC2-Bench

EC2-Bench (EC²-Bench): benchmark for edge-cloud collaboration in long-horizon LLM agents — task performance, resource usage & privacy exposure. arXiv 2610.17816

EC²-Bench (EC2-Bench; Edge–Cloud Collaborative Agent Benchmark) is a benchmark for edge–cloud collaboration in long-horizon LLM agent execution. Edge-side models keep data local and cost little but are weak at demanding planning and tool use. Cloud-hosted frontier models are far more capable, but they are expensive and see everything they are sent. Prior edge–cloud systems coordinate the two once per query. In long-horizon agent execution, cloud participation is instead interleaved throughout the trajectory.