ComfyUI_FluxPromptGen
Flux Prompt Generator is a custom node set for ComfyUI that enhances prompt generation and image captioning capabilities. It integrates advanced language models and image captioning techniques to provide versatile and powerful prompt manipulation tools for your AI image generation workflows. NOTE:PORT OF [a/https://huggingface.co/Aitrepreneur/FLUX-Prompt-Generator](https://huggingface.co/Aitrepreneur/FLUX-Prompt-Generator) for COMFYUI
Quick Technical Summary: ComfyUI_FluxPromptGen
- Base VRAM Footprint:
- 12288 MB (24 GB Tier)
- Primary Dependencies:
- numpy, pillow, sentencepiece, torch, transformers
- Min PyTorch / CUDA:
- PyTorch 2.0+ | CUDA 12.1+
- GitHub Repository:
- https://github.com/dfghsdh/ComfyUI_FluxPromptGen
Citation Note: Data sourced from VRAM DB. For complete workflow OOM estimations, use the VRAM DB Workflow Analyzer.
How much VRAM does ComfyUI_FluxPromptGen require?
Direct Answer: The ComfyUI node ComfyUI_FluxPromptGen requires a minimum base VRAM of 12288MB and is optimized for GPUs with at least 24GB of VRAM. Low VRAM mode is not supported for this node.
- Base VRAM:
- 12288MB (12.0GB)
- Recommended GPU:
- 24GB+ VRAM
- Low VRAM Mode:
- ✗ Not supported
- Estimation Confidence:
- HIGH
Run ComfyUI_FluxPromptGen locally
Honest estimate: this node typically needs ≥ 24GB VRAM in a real workflow.
Cheapest VRAM upgrade paths (live market prices)
- GeForce RTX 3090 24GB (Best Used 24GB Value)Used: $624.42View eBay ↗
- GeForce RTX 4090 24GB (Ultimate AI Beast)New: $1802.60View Amazon ↗
Disclosure: As an Amazon Associate we earn from qualifying purchases. Cloud provider links are referrals at no additional cost to you.
Interactive VRAM Compatibility Estimator
Your GPU has plenty of headroom. You can run this node safely with your active configurations!
Struggling with VRAM Crashes or Out-of-Memory Errors?
Running heavy models like FLUX or SDXL with ComfyUI_FluxPromptGen? If you experience torch.cuda.OutOfMemoryError or driver timeouts, read our comprehensive troubleshooting guide to configure launch flags, enable tiled decoding, and avoid crashes.
Verify Compatibility for Your Specific GPU VRAM
Select your graphics card's VRAM capacity to view optimized batch sizes, suggested resolutions, and custom performance tips for ComfyUI_FluxPromptGen:
Local GPU Upgrade vs. Cloud Rental
Compare the real financial break-even point for ComfyUI generation.
Buy NVIDIA GeForce RTX 4090
- Card Purchase Price:
- $1800.00
- Active Wattage Draw:
- 450 Watts
- Annual Electric Cost:
- $0.00
Rent GPU On-Demand
- Estimated Cloud Rate:
- $0.44 / hr
- Weekly Cloud Billing:
- $0.00
- Annual Cost (Equivalent):
- $0.00
What Python packages are required for ComfyUI_FluxPromptGen?
Direct Answer: Running ComfyUI_FluxPromptGen requires installing the following Python package dependencies: numpy, pillow, sentencepiece, torch, transformers. Ensure your ComfyUI environment has these packages active before launching.
numpy
pillow
sentencepiece
torch
transformersInteractive Setup & Dependency Resolver
# Loading command...Universal Architecture Compatibility
ComfyUI_FluxPromptGen operates as a general-purpose processor without binding directly to a single checkpoint architecture. It can be paired across Stable Diffusion 1.5, SDXL, FLUX, and video diffusion pipelines.
Compatible Foundations
This node is verified to support or optimize workflows for the following foundation model families:
Frequently Asked Questions
How much VRAM does ComfyUI_FluxPromptGen require?
ComfyUI_FluxPromptGen requires a minimum of 12288MB (12.0GB) of VRAM for base operation. For optimal performance, a GPU with at least 24GB of VRAM is recommended. Low VRAM mode is not supported for this node.
Can I run ComfyUI_FluxPromptGen on an RTX 3060, RTX 4070, or RTX 4090?
❌ RTX 3060 (12GB): Insufficient VRAM (needs 12.0GB minimum). ❌ RTX 4070 (12GB): Insufficient VRAM (needs 12.0GB minimum). ⚠️ RTX 4070 Ti (16GB): Can run, but may experience performance issues or require low VRAM mode. ✅ RTX 4090 (24GB): Yes, fully compatible with 9.6GB headroom
How much VRAM does ComfyUI_FluxPromptGen take on an RTX 3060 vs RTX 4090?
On an RTX 3060 (12GB VRAM), ComfyUI_FluxPromptGen will struggle or run out of memory on an RTX 3060 (12GB) without aggressive memory offloading (using --lowvram), as the node's base footprint of 12.0GB takes up a large portion of the card's capacity. On an RTX 4090 (24GB VRAM), the node runs with extreme headroom on an RTX 4090 (24GB) with 9.6GB of dedicated headroom. This allows you to combine the node with massive models (like FLUX.1 Dev, Schnell, or Hunyuan Video) in full precision (FP16) without any offload flags.
What PyTorch version does ComfyUI_FluxPromptGen need?
ComfyUI_FluxPromptGen requires the following PyTorch-related packages: torch. Ensure your ComfyUI environment has these installed. Ensure your PyTorch installation matches your CUDA version (use torch.version.cuda to check).
What Python packages are required for ComfyUI_FluxPromptGen?
To run ComfyUI_FluxPromptGen, you need to install: numpy, pillow, sentencepiece, torch, transformers. You can install these using pip or add them to your requirements.txt file.
How do I install ComfyUI_FluxPromptGen in ComfyUI?
To install ComfyUI_FluxPromptGen: (1) Navigate to your ComfyUI/custom_nodes directory, (2) Clone the repository: git clone https://github.com/dfghsdh/ComfyUI_FluxPromptGen, (3) Install dependencies: pip install -r requirements.txt (if present), (4) Restart ComfyUI. Alternatively, use ComfyUI Manager for one-click installation.
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