I use SpecKit to create a very detailed plan with a high amount of specificity using paid Claude plan.

Then I give it to local LLM (eg: Qwen / Gemma 4) via CLI. This is possible through usage of llm-mlx on Mac (or ollama on any machine given sufficient on hardware) which serve OpenAPI endpoints compatible for Aider (CLI) or Visual Studio Code to vibe along with the agentic coding assistant.

The paid products have an advantage but are not necessary if you don't mind to be more-involved with the process and have low expectations.