Sink In
Officially listedA low-cost cloud platform hosting community Stable Diffusion models with pay-per-image pricing.
Sink In
Sink In is a cloud image generation platform launched in 2023, essentially an "SD model rental": it hosts 40+ popular community SD checkpoints, established through ultra-low pay-per-image pricing and a simple developer API, with one-time free credits on signup. It is a "low-cost model rental room" for SD veterans and developers, handing the choices to people who know models.
Core Capabilities
- Community model catalog: 40+ SD1.5/SDXL checkpoints ready to use, including photorealistic/anime and NSFW-oriented Babes series, with top models running millions of times
- Ultra-low pay-per-image pricing: About $0.003 per 512px image at bulk rates, with no subscription lock-in on credits
- Fast GPU inference: The site claims 99.9% reliability over the past 30 days, and reviews confirm second-level image output
- Rich generation parameters: Text-to-image/image-to-image, steps, resolution, ControlNet, LoRA, Hi-Res Fix/ESRGAN upscaling
- Developer API: Integrate with an Access Token plus Notion docs, now with the WAN 2.2 I2V Fast video model added
- Creator revenue share and referral rewards: A share of payments goes to model creators, and inviting friends earns 50 credits each
Use Cases Artists who understand SD/checkpoints and want to use community models without hardware (especially photoreal/anime/NSFW directions), freelancers producing images in batches per project, and developers needing a low-cost image API. Not for beginners expecting one-click results.
Unique Advantages Unlike aggregator platforms such as Replicate and fal.ai, Sink In takes a curated catalog route; the biggest difference is hosting popular community checkpoints with no filtering (including NSFW models), which filtered mainstream platforms don't offer; pricing sits in the market's lowest tier, at the cost of an ecosystem and documentation far weaker than rivals.
Editor's Verdict As a niche "low-cost SD model hosting + API" product, Sink In's value proposition is clear and well executed — overall 4/5. Deductions: low operational transparency, a 404 pricing page, no mainstream reputation evidence, and a model catalog controlled unilaterally by the operator; but it has kept running for 3+ years. General users should keep Replicate/Segmind as safer alternatives.
Pricing
### 💰 定价模式：免费增值（登录一次性赠积分）+ 预付费积分 / 月度订阅 **起步价**：免费（登录送一次性积分，仅够试几张） #### 主要方案 - **Sink In Basic**：$10/月 - 每月补充 6,000 积分 - **Sink In Pro**：$30/月 - 每月补充 18,000 积分 - **Sink In Ultimate**：$90/月 - 每月补充 60,000 积分 - **积分小包**：$5 - 1,000 积分；$10 - 3,000 积分 - **大量采购**：$0.0015/积分 - 最低 $150（约 100,000 积分） #### 单图成本（按大量采购价折算，2026-09 实测） - 512×512, 20 steps：2 积分（约 $0.003/图） - 512×768, 20 steps：3 积分（约 $0.0045/图） - 768×1024, 20 steps：6 积分（约 $0.009/图） #### 试用/其他信息 登录（GitHub/Google/邮箱）送一次性免费积分；订阅可随时取消但剩余积分不退；支持信用卡与 PayPal。⚠️ 官网 /pricing 返回 404、旧定价链接已失效，价格存在漂移，请以登录后购买页实际价格为准。
FAQ
Is Sink In free?
Not entirely. Signing in (GitHub/Google/email) grants one-time free credits, only enough to try a few images; real use requires buying credits or subscribing (from $10/month), with no recurring free tier.
What are Sink In's main features?
The core is cloud generation hosting 40+ community Stable Diffusion models (checkpoints): text-to-image, image-to-image, ControlNet, LoRA, and Hi-Res Fix upscaling, plus a developer API, creator revenue share, and referral rewards.
How much does one image cost on Sink In?
It bills by credits: a 512×512 image at 20 steps costs about 2 credits, roughly $0.003/image at bulk rates or about $0.01/image in small packs; higher resolution and step counts cost more. Check the purchase page for actual prices.
Which models and parameters does Sink In support?
It hosts 40+ SD checkpoints including AbsoluteReality, majicMIX realistic, DreamShaper, and Juggernaut XL (including NSFW models). Parameters mirror local ComfyUI: prompt, steps, resolution, ControlNet, LoRA, upscaling, and more.
How does Sink In differ from Replicate and fal.ai?
Replicate/fal.ai are aggregator platforms with thousands of models plus mature docs, community, and SDK ecosystems; Sink In takes a curated catalog route, and its biggest difference is hosting popular community checkpoints unfiltered (including NSFW models), with prices in the lowest tier — but its ecosystem and support are far weaker.
Is Sink In suitable for beginners?
Not for complete beginners. You need to understand checkpoints, prompts, and generation parameters or results tend to be mediocre; for SD veterans it is nearly zero-barrier, feeling like local ComfyUI without the GPU or install.
Why won't Sink In's pricing page open?
The site's /pricing returns 404 and old pricing links are dead, so prices have drifted. Prices on this page were cross-verified against the official API page and third-party directories (2026-09); confirm actual costs on the logged-in purchase page.