Qwen 3.8-27B in Deepseek Harness: This Is the Open-Source AI Stack to Beat

Prompt Engineering
41,868 views August 19, 2026

Qwen 3.8 27B Locally + DeepSeek Harness: Setup, Reasoning Levels, and Vision Bounding Boxes LINKS: https://huggingface.co/Qwen/Qwen3.8-27B https://x.com/xenovacom/status/2089435071384076306 https://recipes.vllm.ai/Qwen/Qwen3.8-27B https://huggingface.co/mlx-community/Qwen3.8-27B-4bit https://github.com/deepseek-ai/deepseek-harness Deepseek Harness video: https://www.youtube.com/watch?v=NPO2CwHnfmI Thanks to ‪@NVIDIADeveloper‬ for DGX Spark. Check it out here: https://nvda.ws/3XIkwsh My voice to text App: whryte.com Website: https://engineerprompt.ai/ RAG Beyond Basics Course: https://prompt-s-site.thinkific.com/courses/rag Signup for Newsletter, localgpt: https://tally.so/r/3y9bb0 💻 Pre-configured localGPT VM: https://bit.ly/localGPT (use Code: PromptEngineering for 50% off). Signup for Newsletter, localgpt: https://tally.so/r/3y9bb0 00:00 Qwen 3.8 27B 01:27 DeepSeek Harness 02:05 Server Setup on DGX 02:47 Harness Model Config 03:50 Vision Demo OpenCV 04:51 Counting and Patching 06:45 Bounding Box Results 08:08 ISS Tracker Example 08:36 Reasoning Effort Levels 09:08 Website Prompt Comparison 11:22 Token Cost Breakdown 12:31 Trajectory and Auditing

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