{"slug": "flux-klein", "name": "FLUX Klein", "category": "ai-models", "category_name": "AI models", "description": "", "recommenders": 3, "commenters": 6, "warners": 2, "score": 0.372, "rising": -0.98, "first": "2026-01-16", "latest": "2026-10-17", "why": "An Arc B580 will just about fit Flux.2 Klein (At FP8).", "why_is_quote": true, "has_verdict": false, "sentiment": {"recommend": 4, "neutral": 2, "compare": 0, "warn": 2}, "spark": [0, 0, 1, 0, 0, 1, 0, 2, 0, 0, 0, 0], "listed": true, "loved": [], "caveat": "", "short_quote": "An Arc B580 will just about fit Flux.2 Klein (At FP8).", "kind": "", "icon": true, "family": "flux", "domain": null, "github_repo": "github.com/black-forest-labs/flux-3-image-klein", "official_url": "https://bfl.ai/", "pricing": "", "aliases": ["Flux.2 Klein", "FLUX 3 Image Klein", "FLUX.2 Klein", "FLUX.2 [klein]"], "verdict": null, "praise": [{"label": "", "summary": "", "quotes": [{"id": 778112147, "item_id": 48632009, "url": "https://news.ycombinator.com/item?id=48632009", "by": "vunderba", "date": "2026-06-22", "version": null, "stance": "recommend", "quote": "For my money I'd argue Flux.2 Klein", "excerpt": "Proprietary? Either gpt-image-2 or NB2. I have an example of interior decorating inpainting where I replaced a large floor-to-ceiling window with a mirror, and the result was pretty impressive using NB Pro from nearly a year ago. https://imgpb.com/ZXkiXV Locally hostable? For my money I'd argue Flux.2 Klein but Qwen-Edit still puts in the work.", "context": "", "use_case": "", "switched_from": "", "story": "Moebius: 0.2B image inpainting model with 10B-level performance"}, {"id": 766703041, "item_id": 47918940, "url": "https://news.ycombinator.com/item?id=47918940", "by": "MadnessASAP", "date": "2026-04-27", "version": null, "stance": "recommend", "quote": "An Arc B580 will just about fit Flux.2 Klein (At FP8).", "excerpt": "An Arc B580 will just about fit Flux.2 Klein (At FP8). However, you can also easily get much larger GPUs on RunPod or Vast at $0.25/hr. I would strongly recommend exploring that option, renting an RTX 5090 for an evening of image generation for a dollar or two is way more fun then trying to jam big models on little cards. Just take some time to create a reasonable, scripted, deployment workflow for when you create a ", "context": "", "use_case": "", "switched_from": "", "story": "TurboQuant: A First-Principles Walkthrough"}, {"id": 746490704, "item_id": 46655669, "url": "https://news.ycombinator.com/item?id=46655669", "by": "vunderba", "date": "2026-01-16", "version": null, "stance": "recommend", "quote": "it should perform extremely well", "excerpt": "I haven\u2019t gotten around to adding Klein to my GenAI Showdown site yet, but if it\u2019s anything like Z-Image Turbo, it should perform extremely well. For reference, Z-Image Turbo scored 4 out of 15 points on GenAI Showdown. I\u2019m aware that doesn\u2019t sound like much, but given that one of the largest models, Flux.2 (32b), only managed to outscore ZiT (a 6b model) by a single point and is significantly heavier-weight, that\u2019s ", "context": "", "use_case": "", "switched_from": "", "story": "FLUX.2 [Klein]: Towards Interactive Visual Intelligence"}]}], "caveats": [{"label": "", "summary": "", "quotes": [{"id": 802062848, "item_id": 50128928, "url": "https://news.ycombinator.com/item?id=50128928", "by": "dotancohen", "date": "2026-10-17", "version": "3", "stance": "warn", "quote": "The example image for that upsampler shows a man holding a leash with all six of his fingers.", "excerpt": "The example image for that upsampler shows a man holding a leash with all six of his fingers. https://github.com/black-forest-labs/flux-3-image-klein/blob/main/examples/base/man_dog.png", "context": "", "use_case": "", "switched_from": "", "story": "FLUX 3 Image Klein"}]}], "who": [], "tags": [], "use_cases": [], "compared": [{"slug": "qwen-image-edit", "name": "Qwen Image Edit", "co": 2, "switched_from": 0, "switched_to": 0}], "makers": [], "threads": [{"url": "https://news.ycombinator.com/item?id=50123580", "title": "FLUX 3 Image Klein", "mentions": 2}, {"url": "https://news.ycombinator.com/item?id=48630171", "title": "Moebius: 0.2B image inpainting model with 10B-level performance", "mentions": 2}, {"url": "https://news.ycombinator.com/item?id=49925974", "title": "FLUX 3 Image", "mentions": 1}, {"url": "https://news.ycombinator.com/item?id=47916890", "title": "TurboQuant: A First-Principles Walkthrough", "mentions": 1}, {"url": "https://news.ycombinator.com/item?id=46670279", "title": "Flux 2 Klein pure C inference", "mentions": 1}, {"url": "https://news.ycombinator.com/item?id=46653721", "title": "FLUX.2 [Klein]: Towards Interactive Visual Intelligence", "mentions": 1}], "sentiment_by_month": {"2025-11": {}, "2025-12": {}, "2026-01": {"recommend": 1, "neutral": 1}, "2026-02": {}, "2026-03": {}, "2026-04": {"recommend": 1}, "2026-05": {}, "2026-06": {"recommend": 2}, "2026-07": {}, "2026-08": {}, "2026-09": {}, "2026-10": {"neutral": 1, "warn": 2}}, "versions": [], "version_unnamed": 4, "family_ref": {"slug": "flux", "name": "FLUX"}, "runs_on": null, "lines": [], "quotes": [{"id": 802062848, "item_id": 50128928, "url": "https://news.ycombinator.com/item?id=50128928", "by": "dotancohen", "date": "2026-10-17", "version": "3", "stance": "warn", "quote": "The example image for that upsampler shows a man holding a leash with all six of his fingers.", "excerpt": "The example image for that upsampler shows a man holding a leash with all six of his fingers. https://github.com/black-forest-labs/flux-3-image-klein/blob/main/examples/base/man_dog.png", "context": "", "use_case": "", "switched_from": "", "story": "FLUX 3 Image Klein"}, {"id": 801989952, "item_id": 50124372, "url": "https://news.ycombinator.com/item?id=50124372", "by": "tetraodonpuffer", "date": "2026-10-16", "version": "3", "stance": "warn", "quote": "", "excerpt": "did you try with https://huggingface.co/black-forest-labs/flux-3-image-klein-pup apparently the model is not going to work well unless this type of \"prompt upsampler\" is added", "context": "", "use_case": "", "switched_from": "", "story": "FLUX 3 Image Klein"}, {"id": 798979090, "item_id": 49936193, "url": "https://news.ycombinator.com/item?id=49936193", "by": "vunderba", "date": "2026-10-02", "version": null, "stance": "neutral", "quote": "like they did with Flux.2 / Klein", "excerpt": "One of the things they seem to be emphasizing here is the UX around being able to place specific elements where you want them in an image. If the positions of the components in the overall composition are very important, this seems to make that a lot easier and kind of reminds me of InvokeAI. Ideogram V4, an open-weight model released back in June can also do this [1], but you have to use a relatively cumbersome JSON", "context": "", "use_case": "", "switched_from": "", "story": "FLUX 3 Image"}, {"id": 778117568, "item_id": 48632348, "url": "https://news.ycombinator.com/item?id=48632348", "by": "CharlesW", "date": "2026-06-22", "version": null, "stance": "recommend", "quote": "", "excerpt": "NB2 means \"Nano Banana 2\", a Google image generation model. https://blog.google/innovation-and-ai/technology/ai/nano-banana-2/", "context": "", "use_case": "", "switched_from": "", "story": "Moebius: 0.2B image inpainting model with 10B-level performance"}, {"id": 778112147, "item_id": 48632009, "url": "https://news.ycombinator.com/item?id=48632009", "by": "vunderba", "date": "2026-06-22", "version": null, "stance": "recommend", "quote": "For my money I'd argue Flux.2 Klein", "excerpt": "Proprietary? Either gpt-image-2 or NB2. I have an example of interior decorating inpainting where I replaced a large floor-to-ceiling window with a mirror, and the result was pretty impressive using NB Pro from nearly a year ago. https://imgpb.com/ZXkiXV Locally hostable? For my money I'd argue Flux.2 Klein but Qwen-Edit still puts in the work.", "context": "", "use_case": "", "switched_from": "", "story": "Moebius: 0.2B image inpainting model with 10B-level performance"}, {"id": 766703041, "item_id": 47918940, "url": "https://news.ycombinator.com/item?id=47918940", "by": "MadnessASAP", "date": "2026-04-27", "version": null, "stance": "recommend", "quote": "An Arc B580 will just about fit Flux.2 Klein (At FP8).", "excerpt": "An Arc B580 will just about fit Flux.2 Klein (At FP8). However, you can also easily get much larger GPUs on RunPod or Vast at $0.25/hr. I would strongly recommend exploring that option, renting an RTX 5090 for an evening of image generation for a dollar or two is way more fun then trying to jam big models on little cards. Just take some time to create a reasonable, scripted, deployment workflow for when you create a ", "context": "", "use_case": "", "switched_from": "", "story": "TurboQuant: A First-Principles Walkthrough"}, {"id": 746789664, "item_id": 46674354, "url": "https://news.ycombinator.com/item?id=46674354", "by": "kristianp", "date": "2026-01-18", "version": null, "stance": "neutral", "quote": "the original FLUX.2 [klein] model [1] and python code was only released about 3 days ago", "excerpt": "Note that the original FLUX.2 [klein] model [1] and python code was only released about 3 days ago (inexact without knowing the times and timezones involved.) Discussed at [2] [1] https://bfl.ai/blog/flux2-klein-towards-interactive-visual-intelligence [2] https://news.ycombinator.com/item?id=46653721", "context": "", "use_case": "", "switched_from": "", "story": "Flux 2 Klein pure C inference"}, {"id": 746490704, "item_id": 46655669, "url": "https://news.ycombinator.com/item?id=46655669", "by": "vunderba", "date": "2026-01-16", "version": null, "stance": "recommend", "quote": "it should perform extremely well", "excerpt": "I haven\u2019t gotten around to adding Klein to my GenAI Showdown site yet, but if it\u2019s anything like Z-Image Turbo, it should perform extremely well. For reference, Z-Image Turbo scored 4 out of 15 points on GenAI Showdown. I\u2019m aware that doesn\u2019t sound like much, but given that one of the largest models, Flux.2 (32b), only managed to outscore ZiT (a 6b model) by a single point and is significantly heavier-weight, that\u2019s ", "context": "", "use_case": "", "switched_from": "", "story": "FLUX.2 [Klein]: Towards Interactive Visual Intelligence"}]}