Free Agnes Image 2.1 Flash: Zero-Cost
Purchase Guide
Agnes Image 2.1 Flash is an upgraded image generation model released by Agnes AI. It supports text-to-image, image-to-image, and multi-image synthesis workflows, with particular optimization for high-information-density imagery, complex compositions, and visually rich scenes. Best of all, it is completely free for API access. This article provides a detailed overview of its free quota, usage limits, and integration methods to help you get started quickly.
MyTokenBus brings you Free Agnes Image 2.1 Flash ~
1. Model Overview & Technical Specifications
Agnes Image 2.1 Flash is an upgrade over the 2.0 version, designed for scenarios that demand high information density, intricate composition, and fine visual detail. Key capabilities and specifications include:
| Feature | Description |
|---|---|
| Model Name | agnes-image-2.1-flash |
| API Endpoint | POST /v1/images/generations |
| Core Optimizations | High-information-density images, complex visual details, semantic alignment |
| Output Formats | Image URL or Base64 data |
| Pricing | ¥0 per image |
Core Capabilities
- Text-to-Image: Generate high-quality images from natural language prompts
- Image-to-Image: Transform or optimize existing images based on text instructions
- Multi-Image Synthesis: Combine multiple reference images to generate new compositions
- High-Information-Density Optimization: Enhanced performance for complex scenes, rich compositions, and multi-layered visual elements
- Composition Preservation: Maintains original composition and subject layout when editing input images
- Flexible Size Control: Supports 1K, 2K, 3K, and 4K resolution tiers with a wide range of aspect ratios
2. Free Quota & Pricing
Completely Free API Calls
Agnes Image 2.1 Flash is completely free — image generation costs ¥0 per image. Since June 2026, Agnes AI has made its core model APIs indefinitely free for developers and creators worldwide.
Daily Quota
Free/default users have a daily generation quota of 4,000 images per day. This generous limit is more than sufficient for most individual developers, creators, and small teams.
RPM (Requests Per Minute) Limits
RPM limits vary by output resolution. Higher resolutions consume more computing resources and therefore have lower RPM limits. The current limits for free/default users are:
| Resolution | Allowed RPM | Effective RPM |
|---|---|---|
| 1K | 30 | 20 |
| 2K | 20 | 10 |
| 3K | 2 | 1 |
| 4K | 1 | 1 |
Free/default users are suitable for basic testing and low-frequency usage.
Paid Upgrade Options
For higher RPM limits and production-grade stability, users can subscribe to a Token Plan. Token Plan users enjoy significantly higher limits for 1K and 2K resolutions:
| Plan | Image Quota | 1K RPM | 2K RPM |
|---|---|---|---|
| Starter | 4,000 images/day | 120 | 120 |
| Plus | 4,000 images/day | 120 | 120 |
| Pro | 4,000 images/day | 120 | 120 |
Note: 3K and 4K RPM limits remain stricter across all user types.
3. Usage Limits Summary
| Limit Type | Free Tier Specification |
|---|---|
| Pricing | ¥0 per image (completely free) |
| Daily Quota | 4,000 images per day |
| 1K RPM | 20 effective requests per minute |
| 2K RPM | 10 effective requests per minute |
| 3K RPM | 1 effective request per minute |
| 4K RPM | 1 effective request per minute |
| API Key Required | Yes (free to obtain) |
| Payment Method | Not required |
4. Integration Methods
API Endpoint
POST https://api.agnes-ai.cn/v1/images/generationsRequest Headers
-H "Authorization: Bearer YOUR_API_KEY"
-H "Content-Type: application/json"Request Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
model | string | Yes | Model name: agnes-image-2.1-flash |
prompt | string | Yes | Text instruction for image generation or editing |
size | string | Yes | Output size tier: 1K, 2K, 3K, or 4K (also accepts legacy values like 1024x768) |
ratio | string | No | Aspect ratio to pair with size tier. Supported: 1:1, 3:4, 4:3, 16:9, 9:16, 2:3, 3:2, 21:9. Default: 1:1 |
image | string[] | Required for image-to-image or multi-image synthesis | Array of input images (public URLs or Data URI Base64). Use multiple images for synthesis |
return_base64 | boolean | No | Set to true to return Base64 for text-to-image |
extra_body | object | No | Additional parameters for advanced workflows |
extra_body.response_format | string | No | Output format: url or b64_json |
Size & Aspect Ratio Recommendations
To get predictable output dimensions, pair size with ratio:
- Recommended size values:
1K,2K,3K,4K - Supported ratio values:
1:1,3:4,4:3,16:9,9:16,2:3,3:2,21:9 - If you request unsupported exact dimensions like
1920x1080or2560x1440, the service will automatically map them to the nearest standard tier and aspect ratio
Output Formats
Supports returning generated images as URL or Base64 data.
5. Use Cases
Agnes Image 2.1 Flash is well-suited for:
- Creative Design: Concept art, visual exploration, poster drafts
- Marketing Content: Campaign images, product visuals, social media creatives
- High-Density Visual Generation: Detailed scenes, complex environments, rich compositions
- Image Transformation: Style transfer, scene relighting, background changes
- Product Visualization: Product photos, mockups, commercial visuals
- Social Media Assets: Covers, banners, thumbnails, post images
6. Summary
Agnes Image 2.1 Flash offers developers and creators a zero-cost, high-performance AI image generation API. With support for text-to-image, image-to-image, multi-image synthesis, up to 4K resolution, and a generous 4,000-image daily quota, it is an ideal choice for prototyping, creative projects, and small-to-medium production workloads. While free tier RPM limits vary by resolution, they remain sufficient for most non-production use cases.
For further details, please refer to the official documentation:
https://www.agnes-ai.cn/zh-Hans/docs/agnes-image-21-flash
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