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fix: rebuild FLUX Schnell workflow with correct node types

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Replaced CheckpointLoaderSimple with UNETLoader + DualCLIPLoader.
Replaced CLIPTextEncode with CLIPTextEncodeFlux.
Added proper VAELoader with ae.safetensors.
Added ConditioningZeroOut for empty negative conditioning.
Removed old negative prompt input (FLUX doesn't use it).

Changes match FLUX Dev workflow structure.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Sebastian Krüger
2025-11-23 10:48:13 +01:00
parent 7dd6739f5e
commit ac74730ee2
1 changed files with 121 additions and 116 deletions
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237
comfyui/workflows/text-to-image/flux-schnell-t2i-production-v1.json
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@@ -1,12 +1,12 @@
{
"last_node_id": 12,
"last_link_id": 15,
"last_node_id": 9,
"last_link_id": 9,
"nodes": [
{
"id": 1,
"type": "CheckpointLoaderSimple",
"type": "UNETLoader",
"pos": [50, 100],
"size": {"0": 350, "1": 100},
"size": [350, 100],
"flags": {},
"order": 0,
"mode": 0,
@@ -16,34 +16,44 @@
"type": "MODEL",
"links": [1],
"slot_index": 0
},
{
"name": "CLIP",
"type": "CLIP",
"links": [2, 3],
"slot_index": 1
},
{
"name": "VAE",
"type": "VAE",
"links": [4],
"slot_index": 2
}
],
"properties": {
"Node name for S&R": "CheckpointLoaderSimple"
"Node name for S&R": "UNETLoader"
},
"widgets_values": ["diffusers/FLUX.1-schnell"],
"title": "FLUX Schnell Checkpoint Loader"
"widgets_values": ["flux1-schnell.safetensors", "default"],
"title": "FLUX Schnell UNET Loader"
},
{
"id": 2,
"type": "CLIPTextEncode",
"pos": [450, 100],
"size": {"0": 400, "1": 200},
"type": "DualCLIPLoader",
"pos": [50, 250],
"size": [350, 100],
"flags": {},
"order": 1,
"mode": 0,
"outputs": [
{
"name": "CLIP",
"type": "CLIP",
"links": [2],
"slot_index": 0
}
],
"properties": {
"Node name for S&R": "DualCLIPLoader"
},
"widgets_values": ["t5xxl_fp16.safetensors", "clip_l.safetensors", "flux"],
"title": "FLUX CLIP Loader"
},
{
"id": 3,
"type": "CLIPTextEncodeFlux",
"pos": [450, 100],
"size": [400, 250],
"flags": {},
"order": 2,
"mode": 0,
"inputs": [
{
"name": "clip",
@@ -55,58 +65,61 @@
{
"name": "CONDITIONING",
"type": "CONDITIONING",
"links": [5],
"links": [3, 8],
"slot_index": 0
}
],
"properties": {
"Node name for S&R": "CLIPTextEncode"
"Node name for S&R": "CLIPTextEncodeFlux"
},
"widgets_values": ["A beautiful mountain landscape at sunset, highly detailed, cinematic lighting, 8k"],
"widgets_values": [
"A beautiful mountain landscape at sunset, highly detailed, cinematic lighting, 8k",
"A beautiful mountain landscape at sunset, highly detailed, cinematic lighting, 8k",
3.5
],
"title": "API Positive Prompt"
},
{
"id": 3,
"type": "CLIPTextEncode",
"pos": [450, 350],
"size": {"0": 400, "1": 200},
"id": 9,
"type": "ConditioningZeroOut",
"pos": [450, 400],
"size": [315, 60],
"flags": {},
"order": 2,
"order": 3,
"mode": 0,
"inputs": [
{
"name": "clip",
"type": "CLIP",
"link": 3
"name": "conditioning",
"type": "CONDITIONING",
"link": 8
}
],
"outputs": [
{
"name": "CONDITIONING",
"type": "CONDITIONING",
"links": [6],
"links": [9],
"slot_index": 0
}
],
"properties": {
"Node name for S&R": "CLIPTextEncode"
"Node name for S&R": "ConditioningZeroOut"
},
"widgets_values": ["blurry, low quality, distorted, watermark"],
"title": "API Negative Prompt"
"title": "Empty Negative Conditioning"
},
{
"id": 4,
"type": "EmptyLatentImage",
"pos": [450, 600],
"size": {"0": 315, "1": 106},
"pos": [450, 500],
"size": [315, 106],
"flags": {},
"order": 3,
"order": 4,
"mode": 0,
"outputs": [
{
"name": "LATENT",
"type": "LATENT",
"links": [7],
"links": [4],
"slot_index": 0
}
],
@@ -120,9 +133,9 @@
"id": 5,
"type": "KSampler",
"pos": [900, 100],
"size": {"0": 315, "1": 474},
"size": [315, 474],
"flags": {},
"order": 4,
"order": 5,
"mode": 0,
"inputs": [
{
@@ -133,66 +146,80 @@
{
"name": "positive",
"type": "CONDITIONING",
"link": 5
"link": 3
},
{
"name": "negative",
"type": "CONDITIONING",
"link": 6
"link": 9
},
{
"name": "latent_image",
"type": "LATENT",
"link": 7
"link": 4
}
],
"outputs": [
{
"name": "LATENT",
"type": "LATENT",
"links": [8],
"links": [5],
"slot_index": 0
}
],
"properties": {
"Node name for S&R": "KSampler"
},
"widgets_values": [
42,
"fixed",
4,
1.0,
"euler",
"normal",
1
],
"widgets_values": [42, "fixed", 4, 1.0, "euler", "normal", 1.0],
"title": "FLUX Schnell Sampler (4 steps)"
},
{
"id": 6,
"type": "VAELoader",
"pos": [900, 600],
"size": [315, 60],
"flags": {},
"order": 6,
"mode": 0,
"outputs": [
{
"name": "VAE",
"type": "VAE",
"links": [6],
"slot_index": 0
}
],
"properties": {
"Node name for S&R": "VAELoader"
},
"widgets_values": ["ae.safetensors"],
"title": "FLUX VAE Loader"
},
{
"id": 7,
"type": "VAEDecode",
"pos": [1270, 100],
"size": {"0": 210, "1": 46},
"size": [210, 46],
"flags": {},
"order": 5,
"order": 7,
"mode": 0,
"inputs": [
{
"name": "samples",
"type": "LATENT",
"link": 8
"link": 5
},
{
"name": "vae",
"type": "VAE",
"link": 4
"link": 6
}
],
"outputs": [
{
"name": "IMAGE",
"type": "IMAGE",
"links": [9, 10],
"links": [7],
"slot_index": 0
}
],
@@ -201,39 +228,19 @@
},
"title": "VAE Decode"
},
{
"id": 7,
"type": "PreviewImage",
"pos": [1530, 100],
"size": {"0": 400, "1": 400},
"flags": {},
"order": 6,
"mode": 0,
"inputs": [
{
"name": "images",
"type": "IMAGE",
"link": 9
}
],
"properties": {
"Node name for S&R": "PreviewImage"
},
"title": "Preview Output"
},
{
"id": 8,
"type": "SaveImage",
"pos": [1530, 550],
"size": {"0": 400, "1": 100},
"pos": [1530, 100],
"size": [400, 100],
"flags": {},
"order": 7,
"order": 8,
"mode": 0,
"inputs": [
{
"name": "images",
"type": "IMAGE",
"link": 10
"link": 7
}
],
"properties": {
@@ -245,49 +252,39 @@
],
"links": [
[1, 1, 0, 5, 0, "MODEL"],
[2, 1, 1, 2, 0, "CLIP"],
[3, 1, 1, 3, 0, "CLIP"],
[4, 1, 2, 6, 1, "VAE"],
[5, 2, 0, 5, 1, "CONDITIONING"],
[6, 3, 0, 5, 2, "CONDITIONING"],
[7, 4, 0, 5, 3, "LATENT"],
[8, 5, 0, 6, 0, "LATENT"],
[9, 6, 0, 7, 0, "IMAGE"],
[10, 6, 0, 8, 0, "IMAGE"]
[2, 2, 0, 3, 0, "CLIP"],
[3, 3, 0, 5, 1, "CONDITIONING"],
[4, 4, 0, 5, 3, "LATENT"],
[5, 5, 0, 7, 0, "LATENT"],
[6, 6, 0, 7, 1, "VAE"],
[7, 7, 0, 8, 0, "IMAGE"],
[8, 3, 0, 9, 0, "CONDITIONING"],
[9, 9, 0, 5, 2, "CONDITIONING"]
],
"groups": [],
"config": {},
"extra": {
"workflow_info": {
"name": "FLUX Schnell Text-to-Image Production",
"version": "1.0.0",
"author": "RunPod AI Model Orchestrator",
"version": "1.2.0",
"description": "Fast text-to-image generation using FLUX.1-schnell (4 steps). Optimized for rapid prototyping and iteration.",
"category": "text-to-image",
"tags": ["flux", "schnell", "fast", "production", "t2i"],
"requirements": {
"models": ["FLUX.1-schnell"],
"models": ["FLUX.1-schnell", "CLIP-L", "T5-XXL FP16"],
"custom_nodes": [],
"vram_min": "16GB",
"vram_recommended": "24GB"
},
"parameters": {
"prompt": {
"node_id": 2,
"node_id": 3,
"widget_index": 0,
"type": "string",
"required": true,
"default": "A beautiful mountain landscape at sunset",
"description": "Text description of desired image"
},
"negative_prompt": {
"node_id": 3,
"widget_index": 0,
"type": "string",
"required": false,
"default": "blurry, low quality",
"description": "Undesired elements to avoid"
},
"width": {
"node_id": 4,
"widget_index": 0,
@@ -326,17 +323,17 @@
"default": 4,
"min": 1,
"max": 10,
"description": "Number of sampling steps (4 recommended for Schnell)"
"description": "Number of sampling steps (4 recommended for FLUX Schnell)"
},
"cfg": {
"node_id": 5,
"widget_index": 3,
"guidance": {
"node_id": 3,
"widget_index": 2,
"type": "float",
"required": false,
"default": 1.0,
"default": 3.5,
"min": 1.0,
"max": 1.0,
"description": "Classifier-free guidance scale (1.0 for FLUX Schnell)"
"max": 10.0,
"description": "Guidance scale (3.5 recommended for FLUX)"
}
},
"outputs": {
@@ -348,10 +345,18 @@
}
},
"performance": {
"avg_generation_time": "5-8 seconds",
"vram_usage": "~16GB",
"avg_generation_time": "5-8 seconds (4 steps)",
"vram_usage": "~16-18GB",
"gpu_utilization": "95-100%"
}
},
"notes": [
"FLUX uses UNETLoader instead of CheckpointLoader",
"DualCLIPLoader loads both T5-XXL and CLIP-L text encoders",
"CLIPTextEncodeFlux is FLUX-specific text encoder",
"No negative prompt for FLUX - guidance is handled differently",
"CFG scale of 1.0 recommended, guidance in text encoder",
"Schnell is optimized for 4 steps - fastest FLUX variant"
]
}
},
"version": 0.4