Kie Image Generator

Kie Image Generator

Overview

Generate high-quality AI images using Kie.ai's comprehensive collection of image generation models. This skill provides access to 13+ state-of-the-art models including GPT-4O Image, Flux Kontext Pro/Max, Nano Banana, Nano Banana Pro (DeepSeed), Seedream 4.0, Imagen 4 variants, Ideogram V3, and Ideogram Character.

Key Features:

• 13+ AI image models with diverse capabilities
• Credit/cost tracking and usage reporting
• Interactive model selection with cost comparison
• Automatic task polling and download

Quick Start

Check account credits:

python scripts/generate_image.py --credits

List available models with pricing:

python scripts/generate_image.py --list-models

Interactive mode (select model with cost display):

python scripts/generate_image.py "a beautiful sunset over mountains"

Direct model selection:

python scripts/generate_image.py "cyberpunk city" --model flux-kontext-pro

Skip confirmation:

python scripts/generate_image.py "abstract art" --model seedream-v4 -y

Supported Models

1. GPT-4O Image (gpt4o-image)

• Best for: Text rendering, complex scenes, photorealistic images
• Parameters: prompt, size (1:1, 3:2, 2:3), nVariants (1-4)
• Speed: Medium (~20-30s)

2. Flux Kontext Pro (flux-kontext-pro)

• Best for: Fast creative generation, artistic styles
• Parameters: prompt, image_ratio (16:9, 21:9, 4:3, 1:1, 3:4, 9:16), output_format (jpeg, png)
• Speed: Fast (8x faster than GPT-Image)

3. Flux Kontext Max (flux-kontext-max)

• Best for: High precision, typography, consistency
• Parameters: Same as Flux Kontext Pro
• Speed: Medium

4. Nano Banana (nano-banana)

• Best for: Hyper-realistic, physics-aware visuals
• Parameters: prompt, output_format (PNG, JPEG), image_size (1:1, 9:16, 16:9, 3:4, 4:3, etc.)
• Speed: Fast (~10-20s)

5. Nano Banana Pro (nano-banana-pro) ✨ NEW

• Best for: 3K/4K images, text rendering, character consistency
• Parameters: prompt, aspect_ratio (1:1, 3:2, 16:9, etc.), resolution (sd, hd, 4k), format (jpg, png, webp), image_input (reference images)
• Speed: Fast
• Pricing: $0.04 (768px) / $0.11 (1024px)

6. Seedream 4.0 (seedream-v4)

• Best for: Fast generation, 2K-4K resolution
• Parameters: prompt, image_size, image_resolution (1K, 2K, 4K), max_images (1-6), seed
• Speed: Very fast (~1.8s for 2K)

7. Imagen 4 Ultra (imagen-4-ultra)

• Best for: Photorealistic, high-quality visuals
• Parameters: prompt, negative_prompt, aspect_ratio (1:1, 16:9, 9:16, 3:4, 4:3), num_images (1-4), seed
• Speed: Very fast (10x faster)

8. Imagen 4 (imagen-4)

• Best for: Balanced quality and speed
• Parameters: Same as Imagen 4 Ultra
• Speed: Fast

9. Imagen 4 Fast (imagen-4-fast)

• Best for: Quick iterations, drafts
• Parameters: Same as Imagen 4 Ultra
• Speed: Very fast

10. Ideogram V3 (ideogram-v3)

• Best for: Text rendering, typography
• Parameters: prompt, rendering_speed (TURBO, BALANCED, QUALITY), style (AUTO, GENERAL, REALISTIC, DESIGN), image_size, num_images (1-4), expand_prompt, seed, negative_prompt
• Speed: Variable (depends on rendering_speed)

11. Ideogram Character (ideogram-character)

• Best for: Character consistency, portraits
• Parameters: prompt, reference_image_urls, rendering_speed, style (AUTO, REALISTIC, FICTION), num_images (1-4), expand_prompt, seed
• Speed: Variable

Workflow

Step 1: Environment Setup

Ensure .env file exists in the skill directory with Kie.ai API key:

KIEAI_API_KEY=your_api_key_here

If .env doesn't exist, the script will create it from .env.example and prompt for API key.

Step 2: Generate Image

Run the generation script with desired parameters:

# Basic generation
python scripts/generate_image.py "prompt"

# With model selection
python scripts/generate_image.py "prompt" --model MODEL_ID

# With advanced parameters
python scripts/generate_image.py "prompt" \
  --model gpt4o-image \
  --size "3:2" \
  --variants 2 \
  --output ~/Downloads/images/

Step 3: Task Polling

The script automatically:

1. Submits generation task to Kie.ai
2. Polls for completion (every 2 seconds)
3. Downloads completed image
4. Saves to output directory with timestamped filename

Advanced Usage

Model-Specific Parameters

Each model has a dedicated module in scripts/models/ with full parameter support:

GPT-4O Image:

python scripts/generate_image.py "sunset" \
  --model gpt4o-image \
  --size "16:9" \
  --variants 4

Flux Kontext:

python scripts/generate_image.py "abstract art" \
  --model flux-kontext-pro \
  --ratio "21:9" \
  --format jpeg

Nano Banana Pro:

python scripts/generate_image.py "cinematic poster cool banana hero" \
  --model nano-banana-pro \
  --aspect-ratio "16:9" \
  --resolution 4k \
  --format png

Seedream 4.0:

python scripts/generate_image.py "landscape" \
  --model seedream-v4 \
  --resolution 4K \
  --images 4 \
  --seed 12345

Imagen 4:

python scripts/generate_image.py "portrait" \
  --model imagen-4-ultra \
  --aspect-ratio "3:4" \
  --negative "blurry, low quality" \
  --seed 67890

Ideogram V3:

python scripts/generate_image.py "logo design" \
  --model ideogram-v3 \
  --rendering QUALITY \
  --style DESIGN \
  --expand-prompt

Batch Generation

Generate multiple variations:

# 4 variants of same prompt
python scripts/generate_image.py "cyberpunk city" --variants 4

# Multiple prompts
for prompt in "sunset" "moonrise" "starfield"; do
  python scripts/generate_image.py "$prompt" --model imagen-4-fast
done

Resources

scripts/

• generate_image.py - Main generation script with CLI interface
• models/ - Model-specific parameter handlers
  • gpt4o.py - GPT-4O Image parameters
  • flux_kontext.py - Flux Kontext Pro/Max parameters
  • nano_banana.py - Nano Banana parameters
  • seedream.py - Seedream 4.0 parameters
  • imagen.py - Imagen 4 variants parameters
  • ideogram.py - Ideogram V3/Character parameters
• utils.py - Common utilities (polling, download, env loading)

references/

• api_docs.md - Comprehensive Kie.ai API documentation

Error Handling

The script handles common errors:

• Missing API key: Prompts to create .env file
• Invalid model: Lists available models
• Generation timeout: Retries or reports timeout (max 2 minutes)
• API errors: Displays error message and suggests solutions

Output Format

Generated images are saved with descriptive filenames:

~/Downloads/images/gpt4o-image_sunset_20250113_203045.png
~/Downloads/images/flux-kontext-pro_cyberpunk_20250113_203125.jpg

Format: {model}_{prompt-slug}_{timestamp}.{ext}

Credit System

Kie.ai uses a credit-based pricing system:

• 1 credit = $0.005 USD
• Credits are deducted upon task completion
• Use --credits to check current balance

Estimated Credit Costs

Prices are estimates and may vary based on parameters.

Usage Tracking

After each generation, the script reports:

💰 Credits used: 45.0 ($0.23)
   Remaining: 837.5 credits ($4.19)

This helps track spending and plan budget for generation tasks