Local LLM agent benchmark: framework beats model on RTX 3090

A developer benchmarked five open-source LLMs on an RTX 3090, finding that switching from opencode to a custom LangGraph agent boosted GLM-4.5-Air's task success from 0% to 93%. Qwen3-Coder achieved 100% tool adherence and solved tasks at the lowest energy cost. The study highlights that orchestrator design often matters more than model size for local agent reliability.