GPT 5.6 is here, let's test it for game development

OpenAI just launched GPT-5.6 Sol, Terra, and Luna, so I tested all three models in Unity by asking them to create the same Vampire Survivors-style game. In this video, I compare their gameplay, code quality, UI, animations, scene organization, and overall results against Claude Fable 5. 🔗 Useful links My Patreon and Unity AI template:   / ethandev44   Official GPT-5.6 announcement: https://openai.com/index/gpt-5-6/ Codex in ChatGPT: https://openai.com/codex/ ChatGPT plans and pricing: https://openai.com/chatgpt/pricing/ GPT-5.6 benchmarks on Artificial Analysis: https://artificialanalysis.ai/article... 🎬 Chapters 00:00 GPT-5.6 Sol, Terra, and Luna 01:30 Testing GPT-5.6 Terra 02:05 Terra gameplay results 03:06 Testing GPT-5.6 Luna 03:54 Luna gameplay results 05:39 Testing GPT-5.6 Sol 05:53 Sol gameplay and project review 07:00 Final thoughts GPT-5.6, GPT-5.6 Sol, GPT-5.6 Terra, GPT-5.6 Luna, OpenAI, ChatGPT, Codex, Unity AI, AI game development, Unity MCP, Vampire Survivors clone, AI coding, Claude Fable 5, GPT vs Claude, OpenAI vs Anthropic, game development with AI, AI programming, Unity game development