Can you ship a production-ready Full-Stack App in 2026 without a Pro subscription?

I’ve been testing the 'Free Tier' limits of the 2026 AI landscape. While everyone swears by Claude 3.7 or GPT-5.2, I’m trying to find the 'Golden Ratio' for makers on a zero-budget.

My current findings for the Office Bee MVP:

• The Brain: Gemini 3.1 Pro (via AI Studio) seems to have the highest 'Reasoning-per-Dollar' (free) for deep R&D.

• The Frontend: v0 (Free Tier) for shadcn/ui components.

• The Glue: Bolt.new for the initial scaffold.

The Challenge: Most 'free' models hallucinate complex state management in full-stack architectures.

For those of you vibecoding full products: Which free model handles database schema migrations without breaking? Is anyone successfully using DeepSeek or Llama 4 (Quantized) for local full-stack dev to avoid token costs entirely?