Stable Diffusion X4 Upscaler

Name: Stable Diffusion X4 Upscaler
Author: Stability AI

otheropenrail++

Stable Diffusion X4 Upscaler is a Stability AI model published on the official Stability AI Hugging Face organization.

Capabilities

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

Model IDstable-diffusion-x4-upscaler

ProviderStability AI

Creatorstability

Family—

Licenseopenrail++

Parameters—

Statusactive

Input modalities—

Output modalities—

Architecture—

Knowledge cutoff—

Training data cutoff—

Release date2022-11-23

Deprecation date—

Typeother

Reasoning tokens—

Max input—

Open weightYes

Sourceofficial

Last updated2026-09-22

API

GET/v1/models/stability/stable-diffusion-x4-upscaler

Stable Diffusion X4 Upscaler

stable-diffusion-x4-upscaler

Stable Diffusion X4 Upscaler is a Stability AI model published on the official Stability AI Hugging Face organization.

Changes · 44 entries

stable-diffusion-x4-upscalerupdatef13f134Sep 22, 2026, 06:39 AM

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stable-diffusion-x4-upscalerupdateaf38e5cSep 21, 2026, 06:49 AM

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stable-diffusion-x4-upscalerupdatec67ed84Jul 31, 2026, 10:28 AM

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stable-diffusion-x4-upscalerupdate39b8745Jul 31, 2026, 06:11 AM

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stable-diffusion-x4-upscalerupdate97fe10eJul 25, 2026, 09:55 AM

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stable-diffusion-x4-upscalerupdatebf78dcfJul 25, 2026, 05:49 AM

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stable-diffusion-x4-upscalerupdate20c73acJul 17, 2026, 02:34 AM

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stable-diffusion-x4-upscalerupdatebbbc783Jul 12, 2026, 07:45 AM

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stable-diffusion-x4-upscalerupdate105275dJul 10, 2026, 12:00 AM

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stable-diffusion-x4-upscalercreate08f0ffeMay 11, 2026, 08:27 AM