GPT-5.3 Codex Is INSANE – Hands-On Testing OpenAI’s BEST Model!

Описание: Timestamps:

00:00 - Intro
00:37 - First Look
01:31 - Technical Look
03:30 - Browser OS Test V1
07:41 - 3D Printer Simulation Test V1
11:17 - Flight Combat Sim Test V1
13:31 - C++ Skatepark Game Test V1
16:23 - Python FPS Agentic Test
18:20 - Multimodal Website Generation Test
19:47 - Result Improvement Round
20:57 - Flight Combat Sim Test V2
23:11 - 3D Printer Sim STL V2 Test
26:43 - Browser OS Test V2
28:52 - C++ Skatepark Game Test V2
30:29 - Testing Thoughts
31:16 - Results Overview
32:25 - Closing Thoughts

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In this video, we take a hands-on look at GPT-5.3 Codex, the latest coding-focused model from OpenAI. This release is positioned as a major step forward for agentic and iterative coding workflows, with improvements in planning, execution, and refinement across complex tasks.

We begin with a technical overview and first impressions, then move into extensive real-world testing. These tests include browser-based OS workflows, 3D printer simulations with STL generation, flight combat simulators, C++ game development, Python FPS agentic tasks, and multimodal website generation. We also run multiple improvement rounds to see how well GPT-5.3 Codex iterates on its own results.