DGX Spark Vibe Coding Benchmarks: Qwen 3.5 122B 'Unusable,' Local LLMs Still Behind for Agentic Coding

X/Twitter·low signal

A developer spent several days vibe coding on NVIDIA's DGX Spark and published benchmarks showing Qwen 3.5 122B took 1 minute 9 seconds to respond 'Hi how are you,' making it 'unusable for vibe coding.' The hands-on testing reveals that even with NVIDIA's local hardware, open-weight models significantly lag behind cloud-hosted frontier models for interactive coding workflows. This is real-world data on the local-vs-cloud tradeoff for AI-assisted development.