# FLUX.1 SRPO [dev]

> Image AI Model by Black Forest Labs — available on Layer

12B flow transformer fine-tuned with SRPO for exceptional photorealism and polished composition.

FLUX.1 SRPO [dev] is a 12-billion-parameter flow transformer fine-tuned by Tencent using Semantic Relative Preference Optimization (SRPO). This advanced technique directly aligns the model with human preferences for realism and aesthetics, significantly reducing the typical 'AI look.' It's an ideal choice for artists and creators in the AI art community seeking exceptional photorealism, fine details, and visually appealing compositions.

## Specifications

| Property | Value |
|----------|-------|
| Provider | Black Forest Labs |
| Category | Image |
| Price | 0.75 / megapixel per megapixel |
| Aspect Ratios | 1:1, 2:3, 3:4, 9:16, 3:2, 4:3, 16:9 |

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[Try FLUX.1 SRPO [dev]](https://next.app.layer.ai/me/session/new?baseModelId=FLUX_DEV_SRPO) | [All Image Models](https://layer.ai/models/image) | [All Models](https://layer.ai/models)