Blazing-fast visual creation with unified editing control.Who it's for: creators who want this pipeline in ComfyUI without assembling nodes from scratch. Not for: one-click results with zero tuning — you still choose inputs, prompts, and settings.<h3 id="open-preloaded-workflow-on-runcomfy">Open preloaded workflow on RunComfy</h3><a target="_blank" rel="ugc" href="https://www.runcomfy.com/comfyui-workflows/flux2-klein-4b-9b-in-comfyui-unified-high-speed-workflow?utm_source=civitai&amp;utm_medium=referral">Open preloaded workflow on RunComfy (browser)</a>Why RunComfy first - Fewer missing-node surprises — run the graph in a managed environment before you mirror it locally. - Quick GPU tryout — useful if your local VRAM or install time is the bottleneck. - Matches the published JSON — the zip follows the same runnable workflow you can open on RunComfy.When downloading for local ComfyUI makes sense — you want full control over models on disk, batch scripting, or offline runs.How to use (local ComfyUI) 1. Load inputs (images/video/audio) in the marked loader nodes. 2. Set prompts, resolution, and seeds; start with a short test run. 3. Export from the Save / Write nodes shown in the graph.Expectations — First run may pull large weights; cloud runs may require a free RunComfy account.<hr /><h3 id="overview">Overview</h3>With this compact Klein-based workflow, you can create visuals faster than ever. It merges text-to-image and image-to-image generation in one unified process. You can edit, compose, or reimagine images instantly, whether using a single or multiple references. Its models balance speed and visual fidelity, perfect for real-time design exploration. Experience efficient iteration with consistent, high-quality results suited for any creative workflow.Important nodes:<h2 id="key-nodes-in-comfyui-flux.2-klein-4b-and-9b-workflow">Key nodes in Comfyui FLUX.2 [klein] 4B &amp; 9B workflow</h2><code>Text to Image (Flux.2 Klein 4B)</code> (#75) - Role: Generates images purely from text on the compact 4B model. Internally pairs a FLUX.2 scheduler with <code>CFG</code> guidance and decodes with the shared VAE. - Tune: Adjust your prompt and <code>noise_seed</code> for exploration. If you upscale canvas dimensions, consider switching to the 9B edit routes for downstream refinements.<code>Image Edit (Flux.2 Klein 4B)</code> (#81) - Role: Single‑reference editing that preserves layout and identity while applying prompt‑driven changes. Encodes the reference into latent conditioning and matches latent size to the input automatically. - Tune: Use concise, goal‑oriented prompts that specify what changes and what must stay the same. For aggressive style changes, add a negative prompt to protect unwanted regions or artifacts.<code>Image Edit (Flux.2 Klein 4B Distilled)</code> (#84) - Role: Faster version of the 4B edit route for rapid iteration. Good for testing prompt wording or selection of the best direction before finalizing with a base or 9B pass. - Tune: Lock the <code>noise_seed</code> when A/B testing small prompt edits to isolate prompt effects from stochasticity.<code>Image Edit (Flux.2 Klein 9B)</code> (#100) - Role: High‑capacity edit path that improves global coherence and difficult transformations. Recommended for camera angle changes, large background swaps, or brand integrations. - Tune: When mixing two references, ensure both are well framed and similar in scale. Use the prompt to explain the relationship between image1 and image2, for example “apply the logo from image 2 to the object in image 1.”<code>Image Edit (Flux.2 Klein 9B Distilled)</code> (#109) - Role: Interactive 9B editing with lower latency. Balances quality and speed when you need frequent updates during art direction sessions. - Tune: If results drift too far from the reference, strengthen constraints in the prompt with language like “keep pose, framing, and lighting unchanged” and re‑run with the same <code>noise_seed</code>.<h3 id="notes">Notes</h3>FLUX.2 [klein] 4B &amp; 9B in ComfyUI | Unified High-Speed Workflow — see <a target="_blank" rel="ugc" href="https://www.runcomfy.com/comfyui-workflows/flux2-klein-4b-9b-in-comfyui-unified-high-speed-workflow?utm_source=civitai&amp;utm_medium=referral">RunComfy page</a> for the latest node requirements.

FLUX.2 [klein] 4B & 9B in ComfyUI | Unified High-Speed Workflow

Initial release — FLUX.2-[klein]-4B-9B.

Files with SHA256: 7d59577bbabe5f80ae598c72eca3e6a84fa909188683e5794eca59ea95a91c15