Qwen 3.8 27b saved me $650+ in API costs this evening

I've been experimenting with Qwen3.8-27B using DeepSeek Harness. It's a monster at long-horizon tasks, and the results were pretty wild. DeepSeek Harness ran on my Windows PC and connected over LAN to NInfer on a separate RTX PRO 6000 box. The model was Qwen3.8-27B with a 262K context window. All shell commands and file operations stayed on the client PC. The server did nothing except inference. The quant was NInfer's groupwise-i