GPT-5.6 vs Fable 5 (I Tested Frontend, Backend & Code Quality)

GPT-5.6 just got released, and at first I honestly thought: who cares? But after looking at the benchmarks, pricing, and cost-to-performance compared to Fable 5, things got more interesting. In this video, I test GPT-5.6 and Fable 5 on real coding tasks: a one-shot Figma clone, frontend UI generation, agentic behavior, and code quality inside a real SaaS codebase. The goal is simple: find out which model actually builds better software in the real world. 📸 My SaaS Starter Kit: https://www.syntaxpath.com/saas-start... 🔒 My favorite Auth Solution: https://dub.sh/xeU8r3v 💻 Learn to Code faster with Scrimba and Save 20% - https://scrimba.com/the-ai-engineer-p... 🌍 My Website: https://www.syntaxpath.com/ 👋🏻 Discord:   / discord   ✅ Follow me on X: https://x.com/janmarshaldev 📧 Business ONLY: [email protected] Timestamps: 00:00 Intro 00:52 Benchmarks, Pricing & Cost-to-Performance 04:07 GPT-5.6 Explained: Sol, Terra & Luna 05:49 Testing Setup: Codex, Claude Code & Cursor 06:37 Test 1: One-Shot Figma Clone 07:30 Fable 5 Builds a Figma Clone 09:50 GPT-5.6 Builds a Figma Clone 12:00 My Experience Using GPT-5.6 vs Fable 5 16:00 Which Model Feels More Agentic? 18:00 Test 2: Frontend UI Generation 20:00 Fable 5 UI Test: Simple Prompt 21:30 GPT-5.6 UI Test: Simple Prompt 23:30 High-Quality Prompting Changes Everything 26:00 Which Model Is Better for UI Design? 28:00 Test 3: Code Quality in a Real SaaS Codebase 30:00 Final Verdict: Which AI Coding Model Is Best?