A lot of people are having good experiences doing things like using opus for designing and using locally hosted qwen3.6 for implementation.
I could see a serious cost reduction story by using opus for design and deepseek for implementation.
Personally I would avoid anthropic entirely. But I get why people don't.
Like me: that’s what I do. Either Opus 4.7 or GLM 5.1 for planning, write it out to a markdown file, then farm it out to Qwen 3.6 27B on my DGX Spark-alike using Pi. Works amusingly well all things considered.