Cursor vs. Claude Code vs. Gemini CLI vs. Antigravity: Who built the best business Dashboard ⁉️

I tested the top AI coding agents of 2026: Cursor with GPT-5.1, Gemini 3 CLI with Gemini 3 Pro, Claude Code with Opus 4.5, and Google AntiGravity with Gemini 3 Pro, to see which one could build a professional business dashboard the fastest.

The catch? I didn't just "vibe code" with a one-shot prompt. I used a real-world Product Requirement Document (PRD) and design documents to build an MVP of a business dashboard.

The results were not what I expected.

In this AI coding tools comparison, we move beyond basic prompting. I explain why "Vibe Coding" without planning leads to broken apps and how adopting a PRD-first approach enables non-developers to build enterprise-grade tools for deployment on Google Apps Script. I benchmarked four different models on speed, UI accuracy, and overall quality. If you want to master AI-assisted development, this tournament reveals the current champion.

✅ The massive difference between "Vibe Coding" vs. "PRD-Based Coding"
✅ Real-world performance of GPT-5.1 vs. Opus 4.5 vs. Gemini 3 Pro
✅ Why Google AntiGravity might be the best-kept secret in AI Coding
✅ How to use Google Apps Script to host free internal business tools

CHAPTERS:
00:00 - The Tournament: 4 AI Agents vs. One Dashboard
01:06 - Stop "Vibe Coding": The PRD Method Explained
04:35 - Contender 1: Cursor + GPT-5.1
06:35 - Contender 2: Gemini 3 CLI
08:15 - Contender 3: Claude Code + Opus 4.5
10:07 - Contender 4: Google AntiGravity
11:58 - Final Verdict: The Best AI Stack for 2026

RESOURCES & LINKS:
🔗 Google Apps Script: https://script.google.com/
🔗 Google Antigravity: https://antigravity.google/
🔗 Google Gemini CLI: https://geminicli.com/
🔗 Anthropic Claude Code: https://github.com/anthropics/claude-...
🔗 Cursor: https://cursor.com/

💬 Which model are you betting on in 2026? Claude, OpenAI, or Gemini? Let me know in the comments!

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