Is Grok 4.5 better than Opus?

Live test of Grok 4.5 in Cursor. Launch says it might be the one. I am building a canoe-club iOS app to see if that holds up. What we cover: What SpaceXAI and Cursor actually shipped (pricing, training story, availability) The honest bench picture vs Claude Fable (close on some, behind on others) Live iOS build with Grok 4.5 as the model End-of-stream call: default-worthy, or not yet Timestamps by https://raytranscribes.com 00:00:00 Grok 4.5 Opus Killer Introduction 00:00:43 Canoe Club iOS App Project Overview 00:01:42 Tech Stack: Clerk and Convex 00:04:16 Initial Prompt to Build the App 00:06:40 Debugging Wrong Model Usage in Harness 00:07:53 Reverting Changes with Git Tower 00:10:40 Forcing the Agent to Use Grok Model 00:12:35 Phase One Implementation with Grok Agent 00:14:14 Losing the Chat Window in Cursor 00:17:40 Inspecting the Bootstrapped iOS App 00:19:17 SayRay Real-Time Transcription App Demo 00:24:25 Code Quality and Organization Discussion 00:28:20 User Testing and QA Value 00:30:55 StartMyAI Free Community Introduction 00:35:55 Discovery of the Side Chat Feature 00:37:37 Reviewing Grok's Phase One Completion 00:39:23 First Attempt to Build the iOS App 00:41:40 Debugging the ClerkKit Build Error 00:48:40 Switching to Fable Model for Debugging 00:53:02 Fable Identifies Xcode Beta Issue 00:55:41 Pebbles: Minimal Real-Time Kit Project 01:00:21 Building and Launching the Pebbles App 01:02:37 Using Grok Vision to Redesign Character 01:08:40 Analyzing Grok's Character Redesign Code 01:10:48 Reviewing the New Character Animation 01:15:33 First Demo of Pebbles Voice Agent 01:21:06 Planning the Nutrition Tracking Feature 01:22:15 Comparing Plans: Grok vs. Grok with Waves Skill 01:26:36 Deep Dive into Waves Skill Research Output 01:30:06 Building the Nutrition Feature with Grok 01:35:30 Minimal Real-Time Kit GitHub Repo 01:42:02 GPT Real-Time 2.1 Model Update 01:44:31 Setting Up and Demoing the EXA Web Search 01:50:57 Logging Food and Getting Nutrition Info 01:57:35 Testing Agent Memory and Personality 02:00:07 Grok vs. Fable: Initial Impressions 02:01:21 Wave Engineering and Skill Files Explained 02:07:37 Finalizing the Polished Nutrition Feature 02:13:00 Final Feature Demo with New UI 02:22:21 Fable's UI/UX Thinking Process 02:30:30 Community Questions and Interaction 02:37:12 Vibing in Hawaii 02:44:28 Fixing the Draggable Mirror UI 02:52:50 Building and Testing on a Physical Phone 03:00:52 First Live Test of the Pocket Mirror Feature 03:06:33 Scanning a Nutrition Label Live 03:13:40 Reviewing the Successful Log Entry 03:22:30 Fable's Advanced UI Refinement 03:28:40 Live Demo: Fable's Pocket Mirror Implementation 03:36:20 Fable's Code Output and Final Build 03:42:15 Success: The Final App on a Real Device 03:48:47 Showcase: Scanning Quest Chips Nutrition Label 03:56:22 Live Stream Recap and Final Thoughts 03:59:30 Grok 4.5 Training Data Leak Disclaimer 04:02:20 StartMyAI Community and Resources 04:07:40 The Power of Building for Niche Demographics Links: https://x.ai/news/grok-4-5 https://cursor.com/blog/grok-4-5