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Open-weight model · Text to image

stable-diffusion-v1-5

by SD v1.5 stable-diffusion-v1-5/stable-diffusion-v1-5

Modifications to the original model card are in red or green Stable Diffusion is a latent text-to-image diffusion model capable of generating photo-realistic images given any text input.

Parameters860M
Context
Weights47.3 GB
Licensecreativeml-openrail-m
AccessOpen weights
Monthly Downloads1.8M

Runs On

What it takes to serve stable-diffusion-v1-5 (860M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 1.7 GB 2.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.9 GB 1.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.4 GB 0.5 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

SAVRN's Notes on stable-diffusion-v1-5

Text in, a 512 by 512 image out: that is the work this 860 million parameter diffusion model was fine-tuned for, 595k steps on laion-aesthetics v2 5+ starting from the v1-2 checkpoint. At 16-bit it needs 2.1 GB of memory for 1.7 GB of weights. The lowest on-demand hourly price in our data is $1.85 for a single MI300X with 192 GB, so one card can hold many copies at once; the constraint is compute per image, not memory. The repository is 36 files near 47 GB, well past the working set.

The license is CreativeML Open RAIL-M: commercial use is allowed, but the use-based restrictions in its attachment bind you and must be passed to anyone downstream. Before committing, read the cited papers on latent diffusion and classifier-free guidance, since the 10% text-conditioning dropout in training exists for that sampling method.

Model Card

By SD v1.5, published under creativeml-openrail-m, revision 451f4fe16113.

Stable Diffusion v1-5 Model Card

This repository is a mirror of the now deprecatedruwnayml/stable-diffusion-v1-5, this repository or organization are not affiliated in any way with RunwayML.

Modifications to the original model card are in red or green

Stable Diffusion is a latent text-to-image diffusion model capable of generating photo-realistic images given any text input. For more information about how Stable Diffusion functions, please have a look at 's Stable Diffusion blog.

The Stable-Diffusion-v1-5 checkpoint was initialized with the weights of the Stable-Diffusion-v1-2 checkpoint and subsequently fine-tuned on 595k steps at resolution 512x512 on "laion-aesthetics v2 5+" and 10% dropping of the text-conditioning to improve classifier-free guidance sampling.

You can use this both with the Diffusers library and RunwayML GitHub repository (now deprecated), ComfyUI, Automatic1111, SD.Next, InvokeAI.

Use with Diffusers

Read the full model card (1,635 words)

Identity and Version

Repository
stable-diffusion-v1-5/stable-diffusion-v1-5
Publisher
SD v1.5
Task
Text to image
Modality
Image
Library
diffusers
Parameters
860M parameters
Languages
Not stated by the source
Revision
451f4fe16113bff5a5d2269ed5ad43b0592e9a14
First published
2024-08-30
Last updated
2024-09-07

Files and Weights

36 files, 47.3 GB in total. The weights are 22 files totalling 47.3 GB in bin, ckpt, safetensors.

Weights22 files · 47.3 GB
Configuration9 files · 10.2 KB
Tokenizer3 files · 1.6 MB
Documentation1 file · 14.5 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
safety_checker/model.fp16.safetensorsWeights608.0 MB 08902f19b1cf
safety_checker/model.safetensorsWeights1.2 GB 9d6a233ff6fd
safety_checker/pytorch_model.binWeights1.2 GB 193490b58ef6
safety_checker/pytorch_model.fp16.binWeights608.1 MB 22ba87205445
text_encoder/model.fp16.safetensorsWeights246.1 MB 77795e2023ad
text_encoder/model.safetensorsWeights492.3 MB d008943c017f
text_encoder/pytorch_model.binWeights492.3 MB 770a47a9ffdc
text_encoder/pytorch_model.fp16.binWeights246.2 MB 05eee911f195
unet/diffusion_pytorch_model.binWeights3.4 GB c7da0e21ba7e
unet/diffusion_pytorch_model.fp16.binWeights1.7 GB 30eb3dc47c90
unet/diffusion_pytorch_model.fp16.safetensorsWeights1.7 GB c83908253f9a
unet/diffusion_pytorch_model.non_ema.binWeights3.4 GB 42bc8b8f3af3
unet/diffusion_pytorch_model.non_ema.safetensorsWeights3.4 GB cd1b6db09a81
unet/diffusion_pytorch_model.safetensorsWeights3.4 GB 19da7aaa4b88
v1-5-pruned-emaonly.ckptWeights4.3 GB cc6cb2710341
v1-5-pruned-emaonly.safetensorsWeights4.3 GB 6ce0161689b3
v1-5-pruned.ckptWeights7.7 GB e1441589a6f3
v1-5-pruned.safetensorsWeights7.7 GB 1a189f0be69d
vae/diffusion_pytorch_model.binWeights334.7 MB 1b134cded8eb
vae/diffusion_pytorch_model.fp16.binWeights167.4 MB b7643b3e40b9
vae/diffusion_pytorch_model.fp16.safetensorsWeights167.3 MB 4fbcf0ebe55a
vae/diffusion_pytorch_model.safetensorsWeights334.6 MB a2b5134f4dbc
feature_extractor/preprocessor_config.jsonConfiguration342 B
model_index.jsonConfiguration541 B
safety_checker/config.jsonConfiguration4.7 KB
scheduler/scheduler_config.jsonConfiguration308 B
text_encoder/config.jsonConfiguration617 B
tokenizer/special_tokens_map.jsonConfiguration472 B
unet/config.jsonConfiguration743 B
v1-inference.yamlConfiguration1.9 KB
vae/config.jsonConfiguration547 B
README.mdDocumentation14.5 KB
.gitattributesRepository1.5 KB
tokenizer/merges.txtTokenizer524.6 KB
tokenizer/tokenizer_config.jsonTokenizer806 B
tokenizer/vocab.jsonTokenizer1.1 MB

License and Download

License
creativeml-openrail-m
Access
Open weights, no gate
Download size
47.3 GB
Download from SD v1.5

Released by SD v1.5 through its official repository on Hugging Face.

Built From

Memory Requirements

PrecisionWeights in memory
As published47.3 GB
16-bit1.7 GB
8-bit0.9 GB
4-bit0.4 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About stable-diffusion-v1-5

How much GPU memory does stable-diffusion-v1-5 need?

About 2.1 GB at 16-bit and 0.5 GB at 4-bit: the weights (860M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run stable-diffusion-v1-5 on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use stable-diffusion-v1-5 commercially?

Yes, with conditions. stable-diffusion-v1-5 is released under CreativeML Open RAIL-M. CreativeML Open RAIL-M permits use, including commercial use, subject to the use-based restrictions in its attachment, which must be passed on downstream.

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