Gemini 3.1 Flash Lite

by GoogleReasoningClean

Running live in a sandboxed frame. Click inside it before using the keyboard.

How it went

Total time: 12.4 s
Cost: $0.0064
Output tokens: 4,191
Spent thinking: 2,571 tokens
Speed: 368.4 tok/s
Console errors: 0

First token after: 1.0 s
First visible text after: 8.6 s
Prompt tokens: 533
Code size: 3.4 KB
Finish reason: stop
Served by: Google
Model id: google/gemini-3.1-flash-lite
Reasoning sent: {"effort":"high"}
Max output: 65,536 tokens
Generated: Nov 12, 2026

What it was asked

The prompt

Create a standalone SVG illustration of a fox sitting on a hill, looking at the moon on a starry night, with a few subtle animations. Requirements: - Output a single valid .svg file (```svg code block) with a viewBox of 0 0 800 600. - Hand-written shapes and paths only: no embedded raster images, no external references, no JavaScript. - The fox must be clearly recognizable (pointy ears, snout, bushy tail with a white tip). - Include the moon with a soft glow, many stars, the hill and some background elements (trees, distant hills). - Use a coherent color palette and at least one gradient. - Animations (SMIL or CSS inside the SVG), all looping seamlessly: stars twinkling, the fox's tail swaying gently, and a shooting star crossing the sky every 4 seconds (the first one within 2 seconds).

System prompt, sent with every prompt

You are generating a self-contained web demo. It will be rendered automatically in a sandboxed iframe and compared side by side with the output of other AI models given the exact same task.

Output rules:
- Reply with exactly ONE fenced code block containing the complete file: ```html (or ```svg when the task asks for an SVG). No text before or after the code block.
- Everything must be inline: CSS in <style>, JavaScript in <script>. No external files, images, fonts or network requests, except the CDN URLs explicitly allowed by the task.
- Do not use localStorage, sessionStorage, cookies, IndexedDB, alert(), confirm(), prompt() or window.open(): they are blocked in the sandbox and will throw.
- The page must look right in a 1280×800 viewport and adapt gracefully down to 375px wide. No horizontal scrollbar.
- Something meaningful must be visible on first paint: a screenshot is taken automatically about 3 seconds after load, without any interaction.
- Everything that makes the demo interesting must be visible within the first seconds: nothing hidden behind a high score, a later level or a long play session.
- Games must start in a self-playing demo mode (a simple AI plays) behind a "Click or press a key to start" message, so the game can be judged in action without playing.
- The iframe only receives keyboard events after the user clicks it: if the demo uses the keyboard, display a clear "Click or press a key to start" message.
- The code must run with zero errors in the console of the latest Chrome.

Code run-1.svg · 84 lines

Download

<svg viewBox="0 0 800 600" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <linearGradient id="skyGradient" x1="0" y1="0" x2="0" y2="1">
      <stop offset="0%" stop-color="#0b1026" />
      <stop offset="100%" stop-color="#1a2a6c" />
    </linearGradient>
    <filter id="glow" x="-50%" y="-50%" width="200%" height="200%">
      <feGaussianBlur stdDeviation="8" result="coloredBlur" />
      <feMerge>
        <feMergeNode in="coloredBlur" />
        <feMergeNode in="SourceGraphic" />
      </feMerge>
    </filter>
  </defs>

  <!-- Sky -->
  <rect width="800" height="600" fill="url(#skyGradient)" />

  <!-- Stars -->
  <g fill="#ffffff">
    <circle cx="100" cy="50" r="1.5">
      <animate attributeName="opacity" values="0.2;1;0.2" dur="3s" begin="0s" repeatCount="indefinite" />
    </circle>
    <circle cx="250" cy="120" r="1">
      <animate attributeName="opacity" values="0.3;1;0.3" dur="4s" begin="1s" repeatCount="indefinite" />
    </circle>
    <circle cx="500" cy="80" r="2">
      <animate attributeName="opacity" values="0.1;0.8;0.1" dur="5s" begin="0.5s" repeatCount="indefinite" />
    </circle>
    <circle cx="700" cy="200" r="1.5">
      <animate attributeName="opacity" values="0.2;1;0.2" dur="3.5s" begin="0.8s" repeatCount="indefinite" />
    </circle>
    <circle cx="50" cy="300" r="1">
      <animate attributeName="opacity" values="0.4;1;0.4" dur="2.5s" begin="1.2s" repeatCount="indefinite" />
    </circle>
    <circle cx="600" cy="400" r="2">
      <animate attributeName="opacity" values="0.2;0.9;0.2" dur="4.2s" begin="0s" repeatCount="indefinite" />
    </circle>
    <circle cx="200" cy="250" r="1">
      <animate attributeName="opacity" values="0.3;1;0.3" dur="3s" begin="2s" repeatCount="indefinite" />
    </circle>
    <circle cx="400" cy="150" r="1.2">
      <animate attributeName="opacity" values="0.2;1;0.2" dur="3.8s" begin="0.3s" repeatCount="indefinite" />
    </circle>
  </g>

  <!-- Moon -->
  <circle cx="680" cy="120" r="40" fill="#FDEBD0" filter="url(#glow)" />

  <!-- Distant Hills -->
  <path d="M0 600 L0 350 L200 280 L400 350 L600 300 L800 350 L800 600 Z" fill="#0c1630" />
  
  <!-- Foreground Hill -->
  <path d="M0 600 C 200 400, 600 400, 800 600 Z" fill="#050510" />

  <!-- Fox -->
  <g transform="translate(380, 420)">
    <!-- Tail -->
    <g id="fox-tail">
      <path d="M 0 0 C 40 -80, 80 -80, 100 -20 L 110 -25 L 105 -5 L 85 -5 C 70 -5, 50 -10, 20 0" fill="#D35400" stroke="#D35400" stroke-width="2" />
      <path d="M 90 -20 C 95 -25, 105 -25, 110 -25 L 105 -5 Z" fill="#FFFFFF" />
      <animateTransform attributeName="transform" type="rotate" values="-5; 5; -5" dur="4s" repeatCount="indefinite" />
    </g>

    <!-- Body -->
    <path d="M -30 20 C -20 0, 20 0, 30 20 C 40 40, 20 50, 0 50 C -20 50, -40 40, -30 20" fill="#D35400" />
    
    <!-- Head -->
    <path d="M -20 -10 L 0 -50 L 20 -10 Z" fill="#D35400" />
    <path d="M -15 -15 L -25 -40 L -5 -25 Z" fill="#D35400" />
    <path d="M 15 -15 L 25 -40 L 5 -25 Z" fill="#D35400" />
    <!-- Snout -->
    <path d="M -10 -15 L 0 -5 L 10 -15 Z" fill="#E67E22" />
    <circle cx="0" cy="-25" r="3" fill="#000" />
  </g>

  <!-- Shooting Star -->
  <g>
    <path d="M 850 -50 L 600 150" stroke="white" stroke-width="2" stroke-linecap="round">
      <animateTransform attributeName="transform" type="translate" from="0 0" to="-800 800" dur="4s" repeatCount="indefinite" />
      <animate attributeName="opacity" values="0;1;0" dur="4s" repeatCount="indefinite" />
    </path>
  </g>
</svg>

Reasoning trace (2,571 tokens)

**Visualizing the Celestial Fox**

I'm currently focusing on translating the visual concept of the fox, hill, and moon into SVG code. The key challenge is achieving the twinkling stars and the subtle sway of the tail within the constraints of a static SVG. I'm also planning the animation sequence for the shooting star.

**Refining the SVG Elements**

I'm solidifying the SVG structure, defining the viewbox and color palette. My focus is now on the technical implementation of the sky gradient and the moon's glow effect, preparing for the animation details.

**Animating the Celestial Fox**

I'm actively developing the SVG code, focusing on the intricate details of the fox's tail sway and the twinkling stars. My current efforts involve implementing the `animateTransform` for the tail's subtle rotation and experimenting with opacity changes for star twinkles.

**Implementing Fox Details**

I'm currently refining the fox's form in SVG, focusing on ensuring its silhouette is clearly identifiable with pointy ears and a bushy tail. I'm also iterating on the shooting star's animation, opting for a transform-based movement for greater flexibility.

**Refining SVG Structure**

I'm focusing on the SVG structure, ensuring proper layering for the background gradient, stars, and the fox silhouette. My current efforts involve defining paths for the fox's pointy ears and bushy tail, and refining the shooting star's translation animation.

**Looping the Shooting Star**

I've adjusted the shooting star's animation to loop every four seconds, ensuring the `begin` and `dur` attributes are correctly set. The color palette is verified, and I'm now defining the SVG path for the fox's body, head, and tail.

**Enhancing Fox Tail and Stars**

I'm refining the fox's tail by implementing `stroke-linecap="round"` for a smoother, bushier appearance. I'm also adding more stars to the celestial scene, ensuring the SVG structure is complete and adheres to all constraints, including SMIL animation and vector paths.