> ## Documentation Index
> Fetch the complete documentation index at: https://docs.yelinai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Image Generation API Selection Guide

> Compare all image generation services to help you choose the best API

## 🎯 Choose in 30 Seconds

## Best Value

**Sora Image** - \$0.01/image

* Lowest price, good quality
* Perfect for batch generation
* Chinese-friendly

[View Docs →](/en/api-capabilities/sora-image-generation)

## Highest Quality

**Flux Kontext Max** - \$0.07/image

* Premium quality
* Flexible aspect ratios (3:7 to 7:3)
* Professional design choice

[View Docs →](/en/api-capabilities/flux-image-generation)

## Specific Dimensions

**Gemini Flash Image** - \$0.025/image

* 10 aspect ratio options
* Google technology
* Ultra-fast (\~10s)

[View Docs →](/en/api-capabilities/nano-banana-pro-image)

## Editing Features

**Gemini Flash Edit** - \$0.025/call

* Multi-image composition
* Style transfer
* Custom dimensions

[View Docs →](/en/api-capabilities/nano-banana-pro-image-edit)

## 📊 Complete Comparison

| Service             | Price       | Speed    | Quality | Features                       | Best For                                  |
| ------------------- | ----------- | -------- | ------- | ------------------------------ | ----------------------------------------- |
| **Sora Image**      | \$0.01/img  | \~10-15s | ⭐⭐⭐⭐    | Chinese-friendly, pay-per-call | Batch content, quick prototyping          |
| **Flux Pro**        | \$0.035/img | Fast     | ⭐⭐⭐⭐    | Flexible ratios (3:7-7:3)      | Professional design, social media         |
| **Flux Max**        | \$0.07/img  | Fast     | ⭐⭐⭐⭐⭐   | Highest quality                | Commercial work, premium design           |
| **Gemini Flash**    | \$0.025/img | \~10s    | ⭐⭐⭐⭐    | 10 ratios, ultra-fast          | Quick prototyping, mobile apps            |
| **Nano Banana**     | \$0.025/img | \~10s    | ⭐⭐⭐⭐    | Base64 output                  | Direct web embedding                      |
| **Nano Banana2**    | \$0.055/img | \~10s    | ⭐⭐⭐⭐⭐   | 4K HD, best value              | Best value, advanced daily use            |
| **Nano Banana Pro** | \$0.09/img  | \~10s    | ⭐⭐⭐⭐⭐   | 4K HD, most intelligent        | Professional design, complex instructions |
| **GPT-Image-1**     | Per token   | Medium   | ⭐⭐⭐⭐⭐   | OpenAI standard                | Enterprise integration                    |
| **Seedream**        | \$0.035/img | Medium   | ⭐⭐⭐⭐    | Image-to-image, multi-image    | Creative editing, style transfer          |

**Cost Comparison**: Generating 100 images

* Sora: \$1.00
* Gemini/Nano Banana: \$2.50
* Nano Banana2: \$5.50
* Seedream 4.0: \$3.50
* Nano Banana Pro: \$9.00
* Flux Pro: \$3.50
* Flux Max: \$7.00

**Best Value**: Sora Image (2.5-7x cheaper)

## 🎨 Choose by Scenario

### Social Media Content

* Square (1:1)
* Portrait (9:16)
* Banner

**Recommended**: Sora Image, Gemini Flash, Nano Banana

* **Budget-conscious**: Sora (\$0.01/img)
* **Quality priority**: Gemini Flash (\$0.025/img)
* **Web embedding**: Nano Banana (Base64 format)

**Recommended**: Gemini Flash, Flux Pro

* **Standard portrait**: Gemini Flash 9:16 (\$0.025/img)
* **Ultra-tall**: Flux (3:7 ratio, \$0.035/img)

**Recommended**: Flux Pro

* **Ultra-wide banner**: Flux 7:3 ratio (\$0.035/img)
* **Standard landscape**: Gemini Flash 16:9 (\$0.025/img)

### Professional Design

## High Quality

**Recommended**: Flux Max (\$0.07/img)

* Richest details
* Handles complex prompts
* Perfect for commercial work

## Flexible Sizing

**Recommended**: Gemini Flash (\$0.025/img)

* 10 aspect ratios
* Fast iteration
* Great value

## Special Ratios

**Recommended**: Flux Pro (\$0.035/img)

* 3:7 to 7:3 freedom
* Professional layout needs

## Batch Generation

**Recommended**: Sora Image (\$0.01/img)

* Lowest cost
* Stable quality
* Perfect for volume

### Image Editing

| Need                    | Recommended Service | Price             | Features                       |
| ----------------------- | ------------------- | ----------------- | ------------------------------ |
| Multi-image composition | Gemini Flash Edit   | \$0.025/call      | Up to 4 images fusion          |
| Precise control         | Flux Edit           | \$0.035/call      | Mask control, local editing    |
| Style transfer          | Sora Edit, Seedream | \$0.01-0.035/call | Artistic style migration       |
| Image-to-image          | Seedream            | \$0.035/call      | Keep structure, change details |

## 💰 Cost Optimization Strategy

### Hybrid Approach

1

Test with Sora

Test 10 different prompts for \$0.01 each

```
test_prompts = [
    "sunset over mountains",
    "sunset over snowy mountains",
    "dramatic sunset over mountain peaks",
    # ... 7 more variations
]

for prompt in test_prompts:
    # Test with Sora ($0.01/img)
    url = generate_with_sora(prompt)
    evaluate(url)

# Testing cost: $0.10 (10 tests)
```

2

Final with Flux

Use best prompt with Flux Max for high-quality final

```
best_prompt = "dramatic sunset over mountain peaks"

# Generate final with Flux Max ($0.07/img)
final_image = generate_with_flux_max(best_prompt)

# Final cost: $0.07 (1 generation)
# Total cost: $0.17
```

3

Cost Comparison

**Hybrid approach**: 10 tests + 1 final = $0.17**vs Direct Flux Max testing**: 10 × 0.07=0.07 = 0.07=0.70**Saved**: $0.53 (76%)

## 🔄 Decision Tree

```
Need to generate images
    │
    ├─ Budget sufficient (>$0.05/img)?
    │   ├─ Yes → Need special ratios?
    │   │   ├─ Yes → Flux Pro/Max
    │   │   └─ No → Gemini Flash (10 ratios)
    │   └─ No → Sora Image ($0.01/img)
    │
    ├─ Need editing features?
    │   └─ Yes → Multi-image composition?
    │       ├─ Yes → Gemini Flash Edit
    │       └─ No → Flux Edit (mask control)
    │
    ├─ Pursuing ultimate quality?
    │   └─ Yes → Flux Max ($0.07/img)
    │
    ├─ Need Base64 format?
    │   └─ Yes → Nano Banana or Gemini Flash
    │
    └─ Batch generation (>100 images)?
        └─ Yes → Sora Image (lowest cost)
```

## 📱 Recommendations by Industry

### E-commerce Product Images

* **Recommended**: Flux Pro (\$0.035/img)
* **Why**: Stable quality, supports various product angles
* **Alternative**: Gemini Flash (cheaper, good for bulk)

### Social Media Graphics

* **Recommended**: Sora Image (\$0.01/img)
* **Why**: Best value, perfect for daily updates
* **Alternative**: Gemini Flash (10 ratios for different platforms)

### Professional Design/Branding

* **Recommended**: Flux Max (\$0.07/img)
* **Why**: Rich details, meets commercial standards
* **Alternative**: Flux Pro (similar quality, half price)

### Mobile App Development

* **Recommended**: Gemini Flash (\$0.025/img)
* **Why**: Supports all mobile ratios, fast
* **Alternative**: Nano Banana (Base64 for direct embedding)

## 🚀 Get Started

Ready? Click below to view detailed docs:

## Sora Image

\$0.01/img - Best Value

## Flux

\$0.035-0.07/img - Professional Choice

## Gemini Flash

\$0.025/img - 10 Ratios

## View All Services

Complete image API list

## ❓ Still Unsure?

Which should I choose? Quick Q\&A

\*\*Q: My budget is under 0.02/image∗∗A:Choose∗∗SoraImage∗∗(0.02/image\*\*
A: Choose \*\*Sora Image\*\* (0.02/image∗∗A:Choose∗∗SoraImage∗∗(0.01/img)**Q: I need portrait posters (9:16)**
A: Choose **Gemini Flash** (supports 9:16 ratio)**Q: I need highest quality, budget not an issue**
A: Choose **Flux Max** (\$0.07/img)**Q: I need special ratios (e.g., 7:3 ultra-wide banner)**
A: Choose **Flux Pro** (3:7 to 7:3 freedom)**Q: I need to edit images or compose multiple images**
A: Choose **Gemini Flash Edit** or **Flux Edit\*\*\*\*Q: I need Base64 for direct web embedding**
A: Choose **Nano Banana** or **Gemini Flash**

Want to see actual results? Visit \[imagen.YeLIn AI]\([https://imagen.YeLIn](https://imagen.YeLIn) AI/) to test different models online.