Grok 4.5 vs Opus 4.8: I Built the Same WebApp: Who Won?

Two AI models. One identical app. And a live token meter running the whole time so you can see exactly what each one actually costs, not what a pricing page says. This isn't a benchmark video. It's a real bill. You'll see exactly what each model produced, how long it took, and what it actually cost in dollars, plus my honest take on when the more expensive model is worth it and when it isn't. Which one do you think won on cost, and which one do you think won on quality? 💬 Join our discord & follow us on socials: https://clearmud.link 🛠️ Tools in this video: → Grok 4.5: https://grok.com → Opus 4.8 (Claude): https://claude.ai → Cmux: https://cmux.dev 🕰️ Timestamps: 0:00 - Grok 4.5 vs Opus 4.8 0:12 - The Setup 1:27 - The Prompt 3:25 - Demo Begins 6:28 - Insane 6:57 - Fixing Token Meter 13:41 - I'm Shocked 15:45 - Results Side by Side 17:57 - Results: Opus 4.8 20:48 - Results: Grok 4.5 23:54 - Key Takeaways 25:12 - Closing Thoughts #Grok #Opus #Claude #xAI