# Stable Diffusion API vs UserAPI.ai

Stable Diffusion API records 26,802 monthly visits with -21.8% month-over-month growth and Paid pricing. UserAPI.ai records 5,163,985 monthly visits with +1.6% growth and Freemium, Paid pricing.

| Metric | [Stable Diffusion API](https://openaitools.app/tool/stablediffusion-api) | [UserAPI.ai](https://openaitools.app/tool/userapi-ai) |
| :--- | :--- | :--- |
| Website URL | https://stablediffusionapi.com | https://userapi.ai |
| Categories | AI API, AI Image Generator, Text to Image, AI Models | AI API, AI Image Generator, Text to Image, AI Developer Tools |
| Pricing Model | Paid | Freemium, Paid |
| Monthly Visits | 26,802 | 5,163,985 |
| MoM Growth Rate | -21.8% | +1.6% |
| Primary Market | United States | United States |
| Direct Visits | 8,529 | 3,806,959 |
| Review Score | 4.2 | 4.2 |
| Saved Count | 6 | 1 |
| Supported Platforms | Website | Website |

## Stable Diffusion API

Stable Diffusion API gives developers a single HTTP endpoint for the whole Stable Diffusion family and a long list of community checkpoints. Instead of provisioning GPUs, installing PyTorch, and keeping model weights in sync, you send a POST request with a prompt, model id and parameters, and receive generated images plus a track id you can poll or receive via webhook. The catalog the site advertises covers SD 1.5, SDXL, Stable Diffusion 3, FLUX.1 dev/Schnell, FLUX.2 dev, Qwen Image, Z-Image Turbo, video models such as Wan 2.2 and LTX Video, and dedicated families like Realistic Vision, Juggernaut XL, Pony Diffusion, DreamShaper and Illustrious XL.

Beyond plain text-to-image, the API exposes image-to-image, inpainting, upscaling, background removal, ControlNet conditioning, LoRA usage and Dreambooth-style model fine-tuning, so a single integration can cover asset generation, product mockups, advertising variants and interior or fashion visuals. Official code samples for cURL, Python and Node are published for each model page, which shortens the time from signup to a first working request.

The platform is now presented as part of ModelsLab: accounts, API keys and billing live in the ModelsLab dashboard, and the site states that API requests are processed at scale with a 99.99% uptime target. Pricing is transparent and outlined on the site, with plans starting at $21 per month and an unlimited open-source tier for high-volume workloads.

**Pricing & Plans:** Paid plans billed through ModelsLab: Basic $21/month (3,250 API calls, 5 parallel generations), Standard $47/month (10,000 calls, 10 parallel generations), and Open Source Unlimited $149/month or $1,500/year (unlimited generations on self-hosted open-source models, 15 parallel generations). Third-party and closed models are billed separately; Enterprise offers dedicated GPUs and custom SLAs. Creating an account is free, but API access requires a paid plan.

- **Unified REST endpoint:** One POST endpoint handles text-to-image, image-to-image and editing jobs across SD 1.5, SDXL, Flux, ControlNet and LoRA models, with cURL, Python and Node samples for each model.
- **Large community model catalog:** Thousands of community checkpoints and LoRAs, including anime, photorealistic and stylized families, are browsable with their parameters and sample code.
- **Async jobs and webhooks:** Requests return a job id or track id so long-running generations can be polled or pushed to your own webhook endpoint instead of blocking the client.
- **Fine-tuning and training:** Dreambooth-style endpoints let you train custom concepts and styles on your own images, then reuse the resulting model ids in generation calls.
- **Scaling controls and enterprise options:** Parallel generation limits grow by plan, and an enterprise tier provides dedicated GPUs with custom SLAs for high-volume production traffic.

**Strengths:** Single API surface for many base models and thousands of community checkpoints; No GPU provisioning, driver or model-weight maintenance on your side; Publishing-ready code samples for cURL, Python and Node per model; Transparent tiered pricing with an unlimited open-source plan and enterprise GPUs

**Limitations:** API access requires a paid subscription; the free account only unlocks the dashboard; Third-party and closed models are billed separately from the unlimited open-source plan; Call quotas are counted per request, so batch-heavy experiments can consume a plan quickly

[Profile (Markdown)](https://openaitools.app/tool/stablediffusion-api.md)

## UserAPI.ai

Midjourney has no official public API, so teams that want image generation inside their own products usually need a workaround. UserAPI.ai fills that gap as an independent, unofficial API: it accepts a prompt and returns generated images, exposing the familiar Midjourney methods as REST endpoints you can call from your backend.

There are two ways to generate. With your own Midjourney account you add a Discord token once and pay Midjourney for your plan; UserAPI access costs $0.04 per request or $25 per month, and this route is cheaper above a few hundred images a month and supports speed mode and multiple accounts. With UserAPI Cloud you need no Midjourney subscription and no Discord token — Generations run on UserAPI's accounts at $0.08 per image, with failed tasks refunded automatically, which is a fast way to test.

The service supports the core Midjourney toolkit: Imagine, Upscale, Variation, Blend, Describe, Animate, Upsample, Pan and Inpaint. It ships documentation, code examples for Python, Node.js and PHP, and no-code integrations for n8n and Make.com. It is explicitly not affiliated with Midjourney Inc., so evaluate the account and reliability risks of unofficial access before building it into production.

**Pricing & Plans:** UserAPI.ai offers a free pack of 50 requests with no card. Using your own Midjourney account costs $0.04 per request or $25 per month (or $67.50 per quarter and $246 per year), while UserAPI Cloud runs on UserAPI's accounts at $0.08 per image, a 60% discount off the $0.20 launch rate, starting from $3 (about 37 images), with failed tasks refunded automatically.

- **Full Midjourney method coverage:** Call Imagine, Upscale, Variation, Blend, Describe, Animate, Upsample, Pan and Inpaint through a REST API for scripted image generation.
- **Cloud generation without Discord:** Generate without a Midjourney subscription or Discord token by running on UserAPI Cloud accounts, with failed tasks refunded automatically.
- **Multi-account admin panel:** Manage multiple image generation accounts, schedules and keys from a single admin panel.
- **Code examples and no-code integrations:** Ready code samples for Python, Node.js and PHP, plus official integrations for n8n and Make.com automations.
- **Free pack and flexible plans:** Start with a free pack of 50 requests and move to pay-per-request or monthly plans as volume grows.

**Strengths:** Brings Midjourney image generation into your own app without an official API; Cloud option works with no Midjourney subscription and no Discord token; Covers the main Midjourney methods, including Inpaint, Blend and Animate; Code examples for Python, Node.js and PHP plus n8n and Make.com integrations

**Limitations:** It is an unofficial API and is not affiliated with Midjourney, so it depends on platform behavior it does not control; Using your own Midjourney account still requires a Midjourney subscription and a Discord token; Because it relies on Discord accounts, automated usage carries account-risk considerations; Cloud pricing is per image and can add up at high volume

[Profile (Markdown)](https://openaitools.app/tool/userapi-ai.md)

## Frequently Asked Questions

### How do Stable Diffusion API and UserAPI.ai compare in monthly traffic?

Stable Diffusion API has 26,802 monthly visits, while UserAPI.ai has 5,163,985. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Stable Diffusion API has a month-over-month growth rate of -21.8%; UserAPI.ai has +1.6%.

### How does pricing compare?

Stable Diffusion API: Paid. Paid plans billed through ModelsLab: Basic $21/month (3,250 API calls, 5 parallel generations), Standard $47/month (10,000 calls, 10 parallel generations), and Open Source Unlimited $149/month or $1,500/year (unlimited generations on self-hosted open-source models, 15 parallel generations). Third-party and closed models are billed separately; Enterprise offers dedicated GPUs and custom SLAs. Creating an account is free, but API access requires a paid plan. UserAPI.ai: Freemium, Paid. UserAPI.ai offers a free pack of 50 requests with no card. Using your own Midjourney account costs $0.04 per request or $25 per month (or $67.50 per quarter and $246 per year), while UserAPI Cloud runs on UserAPI's accounts at $0.08 per image, a 60% discount off the $0.20 launch rate, starting from $3 (about 37 images), with failed tasks refunded automatically.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents. | [.md](https://openaitools.app/tool/openai.md) |
| 2 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | One API key for hundreds of AI models from every major provider | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 3 | [MiniMax Image-01](https://openaitools.app/tool/minimax-image-01) | 5,253,734 | -13.2% | Contact for Pricing | MiniMax's open-weight model for turning prompts into images | [.md](https://openaitools.app/tool/minimax-image-01.md) |
| 4 | [fal.ai](https://openaitools.app/tool/fal-ai) | 3,093,684 | -3.7% | Paid, pay-as-you-go usage-based pricing | One API for 1,500+ production-ready generative media models | [.md](https://openaitools.app/tool/fal-ai.md) |
| 5 | [Together AI](https://openaitools.app/tool/together-ai) | 1,645,930 | +64.9% | Freemium, Paid | Together AI is the AI Native Cloud — a full-stack platform for running, fine-tuning and training open-source models. It spans serverless inference APIs, dedicated endpoints, GPU clusters, post-training and storage, all b | [.md](https://openaitools.app/tool/together-ai.md) |
| 6 | [Replicate AI](https://openaitools.app/tool/replicate-ai) | 904,038 | -8.4% | Paid | Run, fine-tune, and deploy machine learning models with one line of code | [.md](https://openaitools.app/tool/replicate-ai.md) |
| 7 | [Agnes AI](https://openaitools.app/tool/agnes-ai) | 902,184 | -25.8% | Freemium | One free API for text, image, and video AI models | [.md](https://openaitools.app/tool/agnes-ai.md) |
| 8 | [Atlas Cloud](https://openaitools.app/tool/atlas-cloud) | 777,031 | -16.4% | Paid | One OpenAI-compatible API for 500+ image, video, audio, and LLM models | [.md](https://openaitools.app/tool/atlas-cloud.md) |
| 9 | [MuAPI](https://openaitools.app/tool/muapi) | 412,788 | +13.7% | Freemium | One API for every generative image, video and audio model | [.md](https://openaitools.app/tool/muapi.md) |
| 10 | [Runware](https://openaitools.app/tool/runware) | 402,862 | +27.1% | Paid | One API for 400K+ AI models, plus serverless and reserved GPUs on modular data centers | [.md](https://openaitools.app/tool/runware.md) |

---
Source: https://openaitools.app/compare/stablediffusion-api-vs-userapi-ai

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)