This workflow brings the power of FLUX.2 Dev to ComfyUI for high-fidelity text-to-image generation and multi-reference image editing. It is tailored for creators who need photorealistic detail, consistent identity, and strong prompt adherence for product shots, character renders, advertising visuals, and concept art. You can run a standard branch or a lighter FP8 branch, keep layouts and materials consistent, and scale up to multi‑megapixel outputs.
Flux 2 Dev blends precise prompting with reference-driven control, so you can maintain style and design continuity across variations. The graph includes ready-to-use reference slots, flexible image sizing, and a custom sampling path that balances quality and speed. It works well for iterative ideation, scene-level consistency, and production-grade results on consumer GPUs.
The graph contains two parallel branches. “Image_flux2” is the standard path; “Image_flux2_fp8” is a lighter variant that swaps in an FP8 text encoder to save memory. Use one branch at a time from prompt to save. Both branches share the same overall logic: load models, author a prompt, optionally add one or more reference images, choose image size, sample, and save.
The workflow auto-loads the Flux 2 Dev diffusion model, a Flux 2 Dev-compatible text encoder, and the Flux 2 VAE. In the standard branch these are handled by UNETLoader (#12), CLIPLoader (#38), and VAELoader (#10). In the FP8 branch they are mirrored by UNETLoader (#86), CLIPLoader (#90), and VAELoader (#70). You typically do not need to touch these unless you want to swap weights.
Write your description in CLIP Text Encode (Positive Prompt) (#6) or (#85). Good prompts name the subject, composition, materials, lighting, and desired style (for example, studio key light, soft shadows, glossy plastic, wide aperture). Flux 2 Dev responds well to clear nouns and concise style tags and can preserve layout instructions and typography when stated unambiguously. Keep the prompt simple when you want the reference images to dominate; get more descriptive when you want stronger creative steering.
Reference support is built in so you can guide identity, style, or design continuity. Drop images into the LoadImage nodes, which are preprocessed for size, encoded to latents, and fused into the conditioning through chained ReferenceLatent nodes. Use the pattern shown to add more references in the FP8 branch (the layout scales to many references). To disable references entirely, bypass all ReferenceLatent nodes and you get pure text-to-image behavior.
Sampling is orchestrated by SamplerCustomAdvanced with a selectable sampler (KSamplerSelect) and the Flux 2 scheduler. A RandomNoise node provides deterministic seeds for reproducibility. The scheduler drives the denoising trajectory while the guider conditions the model with your prompt and reference latents. This path is tuned to deliver crisp details and consistent structure while staying interactive for rapid iteration.
Width and height controls feed both the scheduler and the latent canvas so the model denoises at the intended resolution. Flux 2 Dev comfortably targets 1–4 megapixels; start smaller for look development and scale up when you like the framing. Keep aspect ratio aligned to your subject and reference images to preserve composition and identity cues.
After sampling, latents are decoded by the VAE and written out by SaveImage. Run again with the same seed for continuity across takes, or change the seed for fresh variations while preserving the same prompt and references.
CLIP Text Encode (Positive Prompt) (#6, #85)Encodes your text into embeddings using the Flux 2 Dev-compatible text encoder. Strong nouns and clear material and lighting terms yield the most reliable guidance. If references are heavily used, keep prompts concise so they complement rather than fight the references.
FluxGuidance (#26, #75)Applies the Flux-specific conditioning strength that balances prompt influence against model priors and references. Increase guidance for tighter prompt adherence; reduce it when reference images should dominate. Adjust in small steps and re-run a couple of seeds to confirm stability across outputs.
ReferenceLatent (#39, #43, #83, #84)Injects encoded reference latents into the conditioning stream to preserve identity, style, or layout cues. Use multiple references by chaining nodes following the existing pattern. Bypass individual nodes to A/B test each reference’s contribution or to switch between text-only and multi-reference modes.
Flux2Scheduler (#48, #67)Creates the sigma schedule tailored to Flux 2 Dev and your chosen resolution. More steps generally trade speed for detail and stability. Pair schedule changes with sampler changes sparingly so you can attribute improvements to one variable at a time.
KSamplerSelect (#16, #81)Selects the sampler algorithm used by the custom sampler. Euler is a solid default for a wide range of subjects. Switch samplers only when you are chasing a specific look or behavior; keep other settings constant when comparing.
SamplerCustomAdvanced (#13, #80)Runs the denoising loop with the sampler, schedule, guider, and latent canvas. Key levers you will revisit here are steps, sampler, and the seed coming from the noise node. When exploring a scene, change only one of these at a time to understand its effect.
EmptyFlux2LatentImage (#47, #79)Defines the latent canvas used for denoising at your target width and height. Larger canvases increase detail but also raise VRAM use and time per image. Match canvas aspect ratio to your subject for more natural compositions.
Links to official weights and assets:
This workflow implements and builds upon the following works and resources. We gratefully acknowledge Comfy Org for FLUX.2 Day-0 Support in ComfyUI: Frontier Visual Intelligence for their contributions and maintenance. For authoritative details, please refer to the original documentation and repositories linked below.
Note: Use of the referenced models, datasets, and code is subject to the respective licenses and terms provided by their authors and maintainers.
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