GPT-5 Pro vs Grok 4 Heavy vs Claude 4.1 Opus vs Gemini 2.5 Pro — Head-to-Head Testing!

Timestamps: 00:00 - Intro 00:33 - Model Introduction 02:25 - Testing Theory 03:27 - Quick Note on Local LLMs 03:46 - Browser OS Test 07:50 - Gemini Browser OS Result 10:33 - GPT-5 Browser OS Result 12:56 - Claude Browser OS Result 16:17 - Grok Browser OS Result 17:25 - Browser OS Summary 18:36 - Roleplay Testing 21:54 - Python FPS Test 25:34 - Gemini FPS Result 26:37 - Grok FPS Result 27:15 - GPT-5 FPS Result 28:48 - Claude FPS Result 31:15 - FPS Result Summary 34:41 - Summary of Thoughts 36:33 - Closing Thoughts AI Consulting: https://bijanbowen.com Join the Discord:   / discord   In this video, we run an ultimate head-to-head comparison of four of the most popular frontier LLMs available right now: Google’s Gemini 2.5 Pro, Anthropic’s Claude 4.1 Opus, xAI’s Grok 4 Heavy, and OpenAI’s GPT-5 Pro. We start by looking at each subscription tier and what they offer, then move into a set of structured tests designed to evaluate creativity, reasoning, and coding performance. These include a browser-based OS build, a roleplay challenge, and a Python FPS game generation test to push each model’s coding and problem-solving abilities.