FLUX 3 vs FLUX 2: Image, Video, Audio and Key Differences
Compare FLUX 3 and FLUX 2 across image generation, editing, video, native audio, architecture, model access and API availability.
The biggest difference between FLUX 3 and FLUX 2 is not a conventional quality upgrade. FLUX 2 is an image generation and editing family. FLUX 3 is a multimodal foundation model that expands into video, native audio and action prediction while retaining image generation and editing.
That distinction also changes which model makes sense today. FLUX 2 provides production image APIs and defined variants, while PoYo now provides five production FLUX 3 video workflows with native audio, visual inputs, extension, and keyframe control.
FLUX 3 vs FLUX 2 at a Glance
| Feature | FLUX 2 | FLUX 3 |
|---|---|---|
| Main focus | Image generation and editing | Unified multimodal generation and understanding |
| Inputs | Text and image references | Text, images and video references |
| Image generation | Yes | Yes |
| Image editing | Yes | Yes |
| Video generation | No | Yes |
| Native audio | No | Yes |
| Video-to-video | No | Announced |
| Keyframe-to-video | No | Announced |
| Multilingual dialogue | No | Announced |
| Action prediction | No | Announced through specialized variants |
| Open weights | FLUX.2 Klein variants available | FLUX 3 Dev announced, not yet released |
| PoYo status | Image API available | Five video workflows available |
Different Product Goals
FLUX 2 is designed around high-quality image synthesis and editing. Its model family includes quality-focused, flexible and fast variants for different image workflows.
FLUX 3 uses a shared architecture across images, video and audio. Black Forest Labs argues that learning the modalities together creates a better representation of the world: spatial structure from images, motion and physical change from video, and causal clues from sound.
The result is a broader platform rather than a direct replacement for every FLUX 2 image endpoint.
Architecture: Image Model vs Multimodal Model
FLUX 2 is a flow-matching image model family. It accepts text and, for editing workflows, image references to generate or modify still images.
FLUX 3 builds on BFL’s Self-Flow research and a multimodal transformer. Separate encoders and decoders connect images, video, audio and potentially action signals to a shared model.
This architecture is intended to support both generation and understanding. It also allows knowledge learned from one modality to improve another. For example, video can teach the model how an object moves, while audio can provide evidence about contact, impact and material behavior.
Image Generation and Editing
Both generations cover image synthesis and editing, but their availability differs.
FLUX 2
FLUX 2 is the practical choice when a production workflow needs:
- Text-to-image generation now
- Multi-reference image control
- Prompt-driven image editing
- Defined model variants and resolutions
- Known API request formats and pricing
PoYo currently supports FLUX 2 Pro, Pro Edit, Flex and Flex Edit variants on the FLUX 2 API page.
FLUX 3
Black Forest Labs says FLUX 3 Image improves:
- Complex prompt handling
- Multilingual text generation
- Style diversity
- Support for different aspect ratios and resolutions
- Image editing
However, BFL has not released a standardized public comparison between final FLUX 3 Image endpoints and the complete FLUX 2 family. It would be premature to claim that FLUX 3 wins every image task.
Video Is the Defining FLUX 3 Upgrade
FLUX 2 does not generate video. FLUX 3 Video adds:
- Text-to-video
- Image-to-video
- Video-to-video
- Video and audio continuation
- Keyframe-to-video
- Reference-driven character and style control
- Clips up to 20 seconds
- Agentic chaining into multi-shot sequences
This makes FLUX 3 relevant to a different set of production workflows, including advertising, short narrative video, animated design and audiovisual pre-visualization.
Native Audio Changes the Workflow
A conventional AI video pipeline may generate silent footage, then use separate tools for speech, sound effects, ambience and music.
FLUX 3 generates video and audio jointly. BFL highlights:
- Physical sounds aligned with visible events
- Multilingual dialogue
- Facial expression and speech
- Video-and-audio continuation
- Audio consistency across generated motion
Native audio does not remove the need for review or sound design. It changes the starting point by producing an audiovisual scene rather than a silent clip.
Reference Control
FLUX 2 uses text and image references for generation and editing. It is suited to product images, character concepts, compositing and controlled visual changes.
FLUX 3 broadens reference control to video:
- Use an image as a starting frame
- Use images as identity or style references
- Carry central elements from one video into another
- Continue an audiovisual clip
- Define start and end moments with keyframes
PoYo currently supports one source image for image-to-video, two ordered images for first-and-last-frame generation, up to ten positioned keyframes, and an MP4 source for video extension. Check the FLUX 3 API documentation for current upload limits.
Model Access and Open Weights
FLUX 2 already includes released API and open-weight options. FLUX.2 Klein, for example, targets fast local or hosted generation under published licenses and requirements.
For FLUX 3, BFL has announced:
- FLUX 3 Image through APIs and private weights
- FLUX 3 Video through APIs and private weights
- FLUX 3 Dev as an open-weight multimodal backbone
- FLUX 3 Action through selected partners
The FLUX 3 Dev weights, license, download location and system requirements remain unknown.
Availability and Pricing
Both families are available through PoYo, but for different production jobs. FLUX 2 provides documented image-generation and editing variants. FLUX 3 currently provides five video workflows: text-to-video, image-to-video, first-and-last-frame generation, video extension, and positioned keyframes.
FLUX 3 standard video workflows cost 34 credits per second at 720p or 58 credits per second at 1080p. Extension costs 82 or 106 credits per second respectively. The released PoYo model IDs and request fields are listed in the FLUX 3 API documentation.
The current PoYo release is specifically the FLUX 3 video family. Do not infer that the separate FLUX 3 Image, Action, or Dev roadmap items are included in these endpoints.
Which Model Should You Choose?
Choose FLUX 2 when:
- You need a production image API now.
- Your output is a still image.
- You need reference-based image editing.
- You require known pricing and request parameters.
- You want to test multiple image-focused variants.
Follow FLUX 3 when:
- You need video with native audio.
- Your workflow combines text, images and video references.
- You want video continuation or keyframe transitions.
- Multilingual dialogue is important.
- You are researching multimodal world models or action prediction.
Use both when:
FLUX 2 can remain the stable image-production layer while a team evaluates FLUX 3 for new audiovisual workflows. FLUX 3 does not need to replace a working image pipeline on its first day.
Frequently Asked Questions
Is FLUX 3 better than FLUX 2?
FLUX 3 has a much broader capability set, but there is not yet enough public, independent testing to say it is better for every image-generation or editing task.
Does FLUX 2 support video?
No. FLUX 2 is an image generation and editing family.
Does FLUX 3 still generate images?
Yes. FLUX 3 Image supports image synthesis and editing alongside the new video, audio and action directions.
Will FLUX 3 replace FLUX 2?
BFL has not said that FLUX 3 will immediately replace FLUX 2. On PoYo, the two currently complement each other: FLUX 2 handles production image workflows, while FLUX 3 handles five production video workflows.
Is FLUX 3 open source?
An open-weight FLUX 3 Dev backbone has been announced, but it has not yet been released.
Which model is available on PoYo?
Both are available on PoYo. Choose FLUX 2 for image generation and editing, or FLUX 3 for the five released video workflows with native audio.
Conclusion
FLUX 2 and FLUX 3 should not be understood only as an old and new image model. They represent two product scopes:
- FLUX 2: production-focused image generation and editing
- FLUX 3: a multimodal foundation for image, video, native audio and action
For current image workloads, FLUX 2 remains the relevant choice. For audiovisual generation and multimodal references, the five FLUX 3 video workflows are available now.
Read the broader FLUX 3 overview, explore the FLUX 3 Video guide, or use FLUX 3 on PoYo.
Sources: Black Forest Labs FLUX 3 announcement, Black Forest Labs FLUX.2 announcement
