We pushed OpenAI's new model to the absolute limit! From building complex 3D printer sims to skating games in C++, discover why GPT 5.3 Codex changes everything for coders. We also compare it directly to Opus 4.6 to see which AI truly reigns supreme in 2026. 🚀

We'll talk about:

• Token Efficiency & Accuracy: How GPT 5.3 uses fewer resources to achieve higher precision than previous models.
• Browser OS Experiment: Building a functional operating system inside a web browser and the "Time Capsule" feature.
• Physical World Simulation: Testing the model's ability to create a realistic 3D printer simulation with STL file support.
• Game Development: Creating a flight simulator and a C++ skateboarding game with complex phy ...