ComfyOnline Cloud ComfyUI Workflows and APIs
ComfyOnline lets you run ComfyUI workflows online and deploy them as APIs with one click, paying only for runtime on cloud GPU hardware.
- Best for
- AI video generation
- Key capability
- ComfyUI in the browser
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What is ComfyOnline?
ComfyOnline provides an online environment for running ComfyUI workflows on cloud GPU hardware, without local hardware or setup, and automatically generates APIs from those workflows for AI application development. Billing is credit-based and charges only for the time a workflow is running.
Key features of ComfyOnline
ComfyOnline runs ComfyUI workflows online without expensive hardware or complex installation, charges only for runtime, generates APIs for your workflows with one click, scales automatically and connects video, image, voice and language model services.
ComfyUI in the browser
Run ComfyUI without investing in costly GPU devices or handling dependency installations and model downloads.
One-click API generation
Automatically generates APIs for your workflows so you can build AI applications on them.
Pay only for runtime
Charges only for the time workflows are running, not for idle GPUs while editing.
Third-party AI services
Video generation services such as Kling, Hailuo, Runway, Luma and Pika can be used inside workflows.
Pros and cons of ComfyOnline
Pros
- No expensive GPU hardware required
- No complex installation or model downloads
- Free editing; only runtime is charged
Cons
- Usage is paid with credits; larger GPU types cost more credits per second
- The H100 GPU needs the startup plan
Key use cases for ComfyOnline
AI video generation
Create AI video content with services including Kling, Hailuo, Runway, Luma and Pika.
AI image generation
Generate images with tools like Recraft, Ideogram and Flux Pro Ultra.
AI application backends
Turn ComfyUI workflows into APIs and quickly build AI applications on them.
Photo restoration and effects
Use ready apps such as old photo restoration from the explore page.
How ComfyOnline works
- 1
Build or pick a workflow
Create your own ComfyUI workflow or explore ready AI apps and workflows.
- 2
Run on a cloud GPU
Your workflow runs on a 4090 24GB by default, costing 0.62 credits per second.
- 3
Generate an API
ComfyOnline automatically generates APIs for your workflows.
- 4
Scale with demand
If traffic surges, ComfyOnline automatically scales to meet demand.
Who is using ComfyOnline
ComfyOnline pricing
Pay-as-you-go credits
$10 for 10000 credits (12000 during the +20% offer)
One-time credit purchase; workflows run on a 4090 24GB at 0.62 credits per second. Larger credit packs are also offered.
Personal Unlimited
$17.5 per month (shown with Save 30%)
25000 credits (30000 with the current offer) and an unlimited generation queue in relax mode.
Startups Unlimited
$70 per month (shown with Save 30%)
100000 credits (132000 with the current offer) and an unlimited generation queue in relax mode.
Business Unlimited
$700 per month (shown with Save 30%)
1000000 credits (1300000 with the current offer), customized features and all features of the startups plan.
Plans and prices are as published by the vendor and can change. Check the official site before you buy. Open the pricing page (opens in a new tab)
Frequently asked questions about ComfyOnline
It provides an online environment for running ComfyUI workflows and generates APIs from them for AI application development.
No. ComfyOnline charges only for the time your workflows are running, not for idle GPUs while editing.
Workflows run on a 4090 by default, with A6000, L40s, A100 and H100 options at different credit rates; H100 needs the startup plan.
Yes. The paid plans support private models and LoRAs.
Language models including Claude, Gemini and GPT, along with video, image and voice generation services.
Conclusion
Running ComfyUI locally normally means costly GPU devices plus dependency installations and model downloads, and this service moves the whole workflow online instead. Workflows execute on cloud GPUs, with a 4090 as the default and larger cards such as the A100 or H100 at higher credit rates. Every workflow can also be exposed as an automatically generated API, so the same graph can power an AI application that scales when traffic surges.
Beyond local models, the graphs can call outside services for video, images, voice and language, from Kling and Runway to ElevenLabs and Claude. Ready apps and workflows in the explore section, such as old photo restoration, can be used instead of building a workflow from scratch. Only runtime is charged and editing is free, but every run uses credits, either from a one-time credit purchase or a monthly membership.
Sources
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