1. 5-AI Engineering Competency Matrix
| Contender | Official Access Tier | Core Coding Strength | Primary Technical Limitation |
| Claude Sonnet 5 | Free on claude.ai | Dual slider + direct SVG drag; dynamic electric screwdriver bit animation | Verbose code structure |
| Gemini 3.8 Flash | Free on gemini.google.com | Physical EPDM washer compression (5mm → 3.8mm); dynamic dimension arrows | Minor coordinate padding |
| DeepSeek-V4 | Free on deepseek.com | Exact collision mathematics; easeInOutQuad animation; real site tolerances | Minimalist visual styling |
| Grok 4 | Free on x.ai | High-contrast dark industrial theme; built-in auto-play mode | Over-engineered into full Vite zip repo |
| GPT-5.6 Luna | Free on chatgpt.com | Clean wireframe aesthetic; responsive slider | Faked mechanical concealment via opacity: 0 |
2. The Engineering Scenario
On logistics warehouses and cold-chain hubs, Shandong Honghai Steel (hihsteel.com) manufactures Concealed-Fastener (Secret-Fix) Sandwich Wall Panels (Class A basalt rock wool core with PIR thermal edge sealing).
• The Interlock Physics: Installers drive self-drilling screws through the male tongue flange into structural steel purlins. The adjacent panel’s female slot then slides horizontally over, snapping shut and completely encapsulating the screw head inside the weather-tight cavity—leaving 0 exposed screws on the exterior facade.
• The Field Problem: Overseas construction crews frequently misunderstand the sequence, failing to seat the female slot to 100% depth. A lightweight browser-based simulator bridges this communication gap.
3. Rapid Testing Steps & Benchmark Prompt
Copy & Paste this Unified Benchmark Prompt:
“Act as a Senior Cladding Systems Engineer and Frontend Developer for Shandong Honghai Steel (hihsteel.com).
Task: Write a production-ready, single-file HTML5 webpage (pure native CSS/JS, zero external CDNs) as an interactive installation simulator for our Concealed-Fastener Sandwich Wall Panel System.
Requirements:
1. Visuals: Dark industrial UI (#1E1E24). Display structural purlin, Panel 1 (fixed, showing fastening flange), a self-drilling screw, and Panel 2 (moving female slot).
2. Mechanics: Dragging an ‘Assembly Progress’ slider (0% to 100%) must horizontally slide Panel 2 over Panel 1 until its female cavity fully encapsulates the screw head (0 exposed screws).
3. Sequencer: 3-step buttons (Step 1: Alignment, Step 2: 15 Nm Fastening, Step 3: Interlock & Lock) with component highlights and site tolerance tooltips.
Output ONLY complete, runnable code in a single “`html block.”
4. Real Results & Gemini Pro Master Leaderboard
| Rank | Contender | Score (/100) | Real Audit Takeaway | Live Prototype Link |
| 1st 🏆 | Claude Sonnet 5 | 97.5 | Dual drag input + spinning driver bit animation | ▶ Launch Claude Demo▶ Launch Claude Demo |
| 2nd 🥈 | Gemini 3.8 Flash | 96.5 | Physically compresses EPDM washer; dynamic dimension arrows | ▶ Launch Gemini Demo▶ Launch Gemini Demo |
| 3rd 🥉 | DeepSeek-V4 | 94.5 | Rigorous mathematical collision boundary check; smooth quadratic easing | ▶ Launch DeepSeek Demo▶ Launch DeepSeek Demo |
| 4th 🏅 | Grok 4 | 77.0 | Required extraction from Vite project; clean SVG once compiled | ▶ Launch Grok Demo▶ Launch Grok Demo |
| 5th 🎖️ | GPT-5.6 Luna | 74.5 | Cheated fastener concealment via opacity: 0; CSS divs only | ▶ Launch ChatGPT Demo▶ Launch ChatGPT Demo |
🔗 Direct Prototype Test Hub (Hosted on Netlify Global CDN):
- Claude Sonnet 5 (97.5 pts): https://hihsteel-panel-ep01.netlify.app/claudehttps://hihsteel-panel-ep01.netlify.app/claude
- Gemini 3.8 Flash (96.5 pts): https://hihsteel-panel-ep01.netlify.app/geminihttps://hihsteel-panel-ep01.netlify.app/gemini
- DeepSeek-V4 (94.5 pts): https://hihsteel-panel-ep01.netlify.app/deepseekhttps://hihsteel-panel-ep01.netlify.app/deepseek
- Grok 4 (77.0 pts): https://hihsteel-panel-ep01.netlify.app/grokhttps://hihsteel-panel-ep01.netlify.app/grok
- GPT-5.6 Luna (74.5 pts): https://hihsteel-panel-ep01.netlify.app/chatgpthttps://hihsteel-panel-ep01.netlify.app/chatgpt
Winner Code Snippet (Claude Sonnet 5 Mathematical Boundary Check):
function isCovered(gx) {
var lo = gx + FACE_LOCAL_MIN;
var hi = gx + FACE_LOCAL_MAX;
return SCREW_X >= lo && SCREW_X <= hi;
}
5. Commercial Impact & Engineering Outlook
1. Commercial Value: Embedding Claude Sonnet 5’s interactive tool on hihsteel.com product pages allows foreign EPC engineers to verify panel interlock mechanics directly in their browser before issuing an RFQ, eliminating repetitive CAD clarification emails.
2. Future Outlook (Next 6–12 Months):
• Direct CAD-to-Web: Frontier models will soon ingest raw .dwg production drawings and generate WebGL 3D assemblies automatically.
• In-Browser Finite Element Analysis (FEA): Reasoning models will compute real-time wind-load deflection and thermal expansion directly inside client-side JavaScript.
Need Full AutoCAD Details or Revit Families? Download complete manuals from Shandong Honghai Steel (hihsteel.com).