{
  "display_name": "FLUX.2 Klein 9B - Base",
  "model_name": "FLUX.2 Klein 9B",
  "version": "Base",
  "architecture": "flux2",
  "family": "flux2_klein",
  "author": "Black Forest Labs",
  "description": "9B parameter base Flux 2 model. Undistilled — full quality, the base most community Klein finetunes and LoRAs target. Uses Qwen3-8B text encoder. Gated on Hugging Face (license acceptance + token required for the diffusion weights).",
  "license": "FLUX.2 Klein 9B License (gated)",
  "tags": [
    "flux2",
    "klein",
    "9B",
    "base",
    "quality",
    "consumer"
  ],
  "url": "https://huggingface.co/black-forest-labs/FLUX.2-klein-base-9B",
  "release_date": "2026-01-14",
  "tag_sources": [],
  "tag_format": "spaces",
  "prompt_style": "natural",
  "trigger": "",
  "default_prompt_id": "flux2-klein-photography",
  "negative": "",
  "notes": "CFG 5.0, 20-50 steps, Euler. fp8 (9.6 GB) is the sweet spot on 24 GB cards; bf16 needs encoder offload. Diffusion weights are gated on HF — accept the license and use an HF token; encoder and VAE are ungated. VAE is byte-identical to the Klein 4B flux2-vae.safetensors.",
  "files": [
    {
      "label": "Diffusion Model",
      "folder": "diffusion_models",
      "variants": [
        {
          "precision": "fp8",
          "filename": "flux-2-klein-base-9b-fp8.safetensors",
          "size_bytes": 9567278472,
          "source": {
            "provider": "huggingface",
            "repo": "black-forest-labs/FLUX.2-klein-base-9b-fp8",
            "path": "flux-2-klein-base-9b-fp8.safetensors"
          },
          "sha256": null
        },
        {
          "precision": "bf16",
          "filename": "flux-2-klein-base-9b.safetensors",
          "size_bytes": 18157185168,
          "source": {
            "provider": "huggingface",
            "repo": "black-forest-labs/FLUX.2-klein-base-9B",
            "path": "flux-2-klein-base-9b.safetensors"
          },
          "sha256": null
        }
      ]
    },
    {
      "label": "Text Encoder (Qwen3-8B)",
      "folder": "text_encoders",
      "variants": [
        {
          "precision": "fp8",
          "filename": "qwen_3_8b_fp8mixed.safetensors",
          "size_bytes": 8664848742,
          "source": {
            "provider": "huggingface",
            "repo": "Comfy-Org/vae-text-encorder-for-flux-klein-9b",
            "path": "split_files/text_encoders/qwen_3_8b_fp8mixed.safetensors"
          },
          "sha256": null
        },
        {
          "precision": "bf16",
          "filename": "qwen_3_8b.safetensors",
          "size_bytes": 16381517176,
          "source": {
            "provider": "huggingface",
            "repo": "Comfy-Org/vae-text-encorder-for-flux-klein-9b",
            "path": "split_files/text_encoders/qwen_3_8b.safetensors"
          },
          "sha256": null
        },
        {
          "precision": "fp4",
          "filename": "qwen_3_8b_fp4mixed.safetensors",
          "size_bytes": 6802593327,
          "source": {
            "provider": "huggingface",
            "repo": "Comfy-Org/vae-text-encorder-for-flux-klein-9b",
            "path": "split_files/text_encoders/qwen_3_8b_fp4mixed.safetensors"
          },
          "sha256": null
        }
      ]
    },
    {
      "label": "VAE",
      "folder": "vae",
      "filename": "flux2-vae.safetensors",
      "size_bytes": 336211292,
      "source": {
        "provider": "huggingface",
        "repo": "Comfy-Org/vae-text-encorder-for-flux-klein-9b",
        "path": "split_files/vae/flux2-vae.safetensors"
      },
      "sha256": null
    }
  ],
  "nodes": {
    "KSampler": {
      "steps": 30,
      "cfg": 3.5,
      "sampler_name": "euler",
      "scheduler": "beta",
      "steps_range": [
        20,
        50
      ],
      "cfg_range": [
        3.0,
        7.0
      ],
      "sampler_name_options": [
        "euler",
        "dpmpp_2m",
        "heun"
      ],
      "scheduler_options": [
        "beta",
        "simple",
        "normal"
      ]
    },
    "FluxGuidance": {
      "guidance": 5.0,
      "guidance_range": [
        3.0,
        7.0
      ]
    },
    "CFGGuider": {
      "cfg": 3.5,
      "cfg_range": [
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        7.0
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    },
    "KSamplerSelect": {
      "sampler_name": "euler",
      "sampler_name_options": [
        "euler",
        "dpmpp_2m",
        "heun"
      ]
    },
    "Flux2Scheduler": {
      "steps": 30,
      "steps_range": [
        20,
        50
      ]
    },
    "EmptyFlux2LatentImage": {
      "width": 1024,
      "height": 1024,
      "_resolutions": [
        {
          "width": 896,
          "height": 1152
        },
        {
          "width": 832,
          "height": 1216
        },
        {
          "width": 1152,
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          "height": 832
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        {
          "width": 1024,
          "height": 1024
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      ]
    }
  }
}