AI Image Generators Guide » Leonardo AI

Leonardo AI: The Game Developer's Choice

Updated January 2026 | 12 min read

What is Leonardo AI?

Leonardo AI is a cloud-based image generation platform launched in 2023 that differentiates itself through production-focused features. While tools like Midjourney optimize for artistic single images, Leonardo is built for creators who need multiple consistent images of the same characters, environments, and assets.

The platform combines its own trained models with the ability for users to train custom models on their own images. This means you can create a character once and then generate that exact character in unlimited poses, settings, and situations, which is exactly what game developers and comic artists need.

Key Features

Custom Model Training

Leonardo's standout feature is accessible model training. Upload 10-20 images of a character, train a model, and then generate that character consistently. This works for:

• Original characters for games or comics
• Consistent NPCs and protagonists
• Product visualization
• Architectural styles
• Any concept you need to reproduce reliably

Multiple Base Models

Leonardo offers various base models optimized for different styles:

• Leonardo Diffusion XL: General purpose, high quality
• PhotoReal: Photorealistic images
• Anime XL: Anime and manga styles
• DreamShaper: Fantasy and concept art
• 3D Animation Style: 3D-rendered look

AI Canvas

A built-in editor for compositing and editing:

• Inpainting (regenerate specific areas)
• Outpainting (extend images beyond borders)
• Sketch to image conversion
• Layer-based editing

Realtime Generation

A fast-generation mode that produces images in near real-time as you type, great for rapid ideation and exploration.

Pricing and Tokens

Leonardo uses a token system where different operations cost different amounts:

Token Costs

• Standard generation: 4-8 tokens per image
• High-resolution: 12-24 tokens per image
• Model training: 500-2000 tokens per training
• AI Canvas operations: Varies by complexity

Training Custom Models

Preparing Training Images

For best results:

• Use 10-20 high-quality images
• Show your subject from multiple angles
• Vary lighting conditions
• Keep backgrounds simple or varied
• Ensure consistent subject appearance
• Use similar resolution images (1024x1024 works well)

Training Process

1. Upload your training images
2. Tag each image with descriptions
3. Choose a base model to fine-tune
4. Set training parameters (strength, steps)
5. Start training (takes 15-30 minutes)
6. Test and iterate as needed

Using Your Trained Model

Once trained, select your custom model and use a trigger word to invoke your trained concept:

"[trigger word] standing in a forest, dramatic lighting, fantasy environment"

Prompting for Leonardo

Basic Structure

Leonardo responds well to structured prompts:

"A warrior princess, silver armor, red cape, standing on a cliff overlooking a fantasy kingdom, golden hour lighting, epic composition, highly detailed, 4k"

Model-Specific Keywords

Different models respond to different style keywords:

• PhotoReal: "photograph," "candid," "natural lighting," "DSLR"
• Anime XL: "anime style," "manga," "cel shaded"
• DreamShaper: "concept art," "digital painting," "fantasy"

Negative Prompts

Leonardo supports negative prompts to avoid unwanted elements:

Negative: "blurry, low quality, distorted, watermark, text"

Best Use Cases

Game Development

• Character concept art
• Environment concepts
• Item and weapon designs
• UI elements and icons
• Marketing materials

Comics and Illustration

• Consistent character generation
• Background art
• Panel compositions
• Style exploration

Product Design

• Product mockups
• Packaging concepts
• Marketing visuals

Strengths and Limitations

Strengths

• Character Consistency: Best-in-class for recurring characters
• Generous Free Tier: Actually usable without paying
• Model Training: Accessible custom training
• Production Focus: Built for real workflows
• Polished Interface: Professional, intuitive UI

Limitations

• Quality Ceiling: Doesn't match Midjourney's artistic peak
• Photorealism: Not as realistic as Flux
• Cloud Only: No local generation option
• Token System: Can feel limiting for heavy users

Tips for Success

• Start with the free tier to learn the system
• Experiment with multiple base models for your style
• Invest time in quality training images
• Use negative prompts consistently
• Save successful prompts for reuse
• Leverage AI Canvas for refinement

Conclusion

Leonardo AI fills a crucial niche that other generators don't address well: production-focused image generation with character consistency. For game developers, comic creators, and anyone needing reliable, repeatable results with custom subjects, Leonardo offers capabilities that Midjourney and DALL-E simply can't match.

The generous free tier makes it easy to evaluate, and the professional features justify the subscription for serious users. While it may not produce the most artistic single images, its production workflow integration makes it indispensable for certain creative workflows.