Flux 2 Models Complete Guide: Max, Pro, Flex, and Klein Compared

Understanding Flux 2 Model Family

Black Forest Labs' Flux 2 represents the state-of-the-art in AI image generation. Each model variant serves different use cases - from ultra-fast generation to maximum quality output. All models support multi-reference editing, letting you combine elements from multiple source images.

Multi-Reference: Combine Multiple Images

One of Flux 2's most powerful features is multi-reference support. Upload multiple images and the AI combines elements from each - perfect for character consistency, product mockups, fashion editorials, and creative compositing. Pro, Flex, and Max support up to 8 reference images, while Klein supports up to 4.

Character consistency: Keep the same face across different scenes and poses
Product mockups: Place your product in any context with consistent branding
Fashion editorials: Maintain model identity across outfit changes
Creative compositing: Blend person + pose + background from separate references

Flux 2 [Max]

The flagship model offering the highest quality and unique grounding search capability. Use Max when you need current events, real-time information, or absolute best quality. Supports up to 8 multi-reference images. 28 credits per image.

Flux 2 [Pro]

The best balance of quality and cost for production workloads. Pro delivers excellent results at a fraction of Max's cost. Supports up to 8 multi-reference images. Ideal for most professional use cases. 12 credits per image.

Flux 2 [Flex]

Optimized for typography and text rendering. When you need text in your images, Flex is the go-to choice. Supports up to 8 multi-reference images. Also offers adjustable steps for fine control. 20 credits per image.

Flux 2 [Klein] 4B & 9B

Ultra-fast models for high-volume generation. Klein 4B offers sub-second generation at just 4 credits, while Klein 9B provides better quality at 5 credits. Both support up to 4 multi-reference images. Perfect for real-time applications.