Depends on whether you want a programmer or a therapist. Given clear description of class structure and key algorithms, Qwen3-Code is way more likely to do exactly what is being asked than any Gemini model. If you want to turn a vague idea into a design, yeah cloud bot is better. Let's not forget that cloud bots have web search, if you hook up a local model to GPT Researcher or Onyx frontend, you will see reasonable performance, although open ended research is where cloud model scale does pay off. Provided it actually bothers to search rather than hallucinating to save backend costs. Also local uncensored model is way better at doing proper security analysis of your app / network.