---
title: "Stable Diffusion 3 Medium / 2B: workflow fit, costs and terms"
description: "Revisiting a documented SD3 project or comparing licenses."
language: en
canonical: https://bestadultgames.io/en/developers/models/stable-diffusion-3-medium
---

[Developers](https://bestadultgames.io/en/developers.md) / [image models](https://bestadultgames.io/en/developers/models?category=image)

model · Documentation reviewed · 5 October 2026

B

# Stable Diffusion 3 Medium / 2B

Revisiting a documented SD3 project or comparing licenses.

- **Availability**: legacy
- **Where it runs**: local
- **Costs**: Compute and storage, plus any hosted-provider fees.
- **Adult content policy**: restricted

SD3 Medium’s B-tier recommendation suits revisiting an existing SD3 project or checking an adapter built for this exact model. It is an older downloadable release; keep SD3, SD3.5 and SDXL distinct when choosing a workflow. For a new asset pipeline, compare current alternatives before committing. Read the license included with your download alongside Stability’s current Core Model terms, because licensing changed after launch. The acceptable-use policy separately restricts content relating to sexual acts, including when you self-host. A small model and offline access do not grant permission for every asset category.

## Commercial use & license

Read the license included with your exact download and check current Core Model Community License coverage; early SD3 launch summaries may be outdated.

## Adult content rules

Stability’s current acceptable-use policy prohibits content relating to sexual acts and applies to self-hosted technology and third-party hosting.

[Read the policy](https://stability.ai/use-policy)

## What you need

A compatible GPU runtime, the required model components and storage. Measure memory use in your chosen workflow.

Ranks are recommendations for the task described, based on reviewed documentation. Model ranks cover non-explicit development work. We have not run practical benchmarks. Check content policies and commercial terms separately. [How the ranks work](https://bestadultgames.io/en/developers/methodology.md)

### Sources & further reading

- [Official SD3 Medium card](https://huggingface.co/stabilityai/stable-diffusion-3-medium)
- [Current Stability licensing FAQ](https://stability.ai/license)
- [Stability acceptable-use policy, effective 30 September 2026](https://stability.ai/use-policy)

Last checked 5 October 2026.

## Why consider it

- A defined SD3 baseline for reproducing existing work.
- Smaller than larger later releases.
- Useful when an adapter requires this exact model.

## Tradeoffs to plan for

- Predates SD3.5.
- Launch-era license descriptions may be outdated.
- Current use-policy restrictions still apply.

The tier reflects documented fit for the workflow described here and availability. No numeric score or hands-on performance results are provided.

[Compare with other models](https://bestadultgames.io/en/developers/compare?model=stable-diffusion-3-medium)

## Related guides

AI images · Beginner · 5 min read

### [Choose an image model by the asset you need to ship](https://bestadultgames.io/en/developers/guides/choose-image-model-for-game-assets.md)

Choose image models by asset fit, correction work, repeatability, compute and rights before committing a full cast.

Read the guide → A reading priority

AI images · Intermediate · 6 min read

### [Keep AI character art consistent through references and corrections](https://bestadultgames.io/en/developers/guides/ai-character-reference-workflow.md)

Build approved character references, catch identity drift and review expressions, outfits and exported sprites as one consistent set.

Read the guide → A reading priority

Civitai & LoRA · Beginner · 6 min read

### [Read Civitai checkpoints, LoRAs and permission flags correctly](https://bestadultgames.io/en/developers/guides/civitai-models-loras-and-licenses.md)

Identify Civitai resource types, check the exact base, read commercial permissions and upstream licenses, and test downloads before using them in a game.

Read the guide → A reading priority

Civitai & LoRA · Advanced · 6 min read

### [Train, evaluate and release an original-character LoRA](https://bestadultgames.io/en/developers/guides/train-evaluate-release-character-lora.md)

Build a consistent character dataset, train a supported LoRA, test unseen poses and release an adapter with clear compatibility and rights.

Read the guide → B reading priority