RunComfy

Run ComfyUI workflows in the cloud, no install required

Intermediate API
Screenshot of RunComfy, Run ComfyUI workflows in the cloud, no install required

What is RunComfy?

RunComfy is a developer tool. A browser-hosted ComfyUI with 200+ ready-to-run workflow templates, an auto-setup agent that resolves nodes and models from a workflow.json file, GPU machines from 16GB to 141GB of VRAM, shareable reproducible environments, and a serverless API for deploying saved workflows.

RunComfy is a hosted ComfyUI environment for people who want the node-based Stable Diffusion interface without managing a local GPU rig. The platform runs an unmodified ComfyUI build in the browser, so workflows built locally behave the same way in the cloud. Around that core sits a library of over 200 ready-to-run templates covering text to image, image editing, video creation and transformation, restoration and upscaling, and 3D modeling, with dedicated model pages for FLUX, WAN, LTX, Z-Image, Qwen Image Edit, Krea 2, MiniMax H3 and Qwen Image 2.1. Setup work is the main thing the product removes. An auto-setup agent accepts a workflow.json file and resolves the custom nodes, dependencies and model downloads that would otherwise break a fresh environment. Models can be pulled directly from Civitai, Hugging Face and Google Drive, and RunComfy claims download speeds 25 times faster than local uploads with persistence across sessions. ComfyUI-Manager is available for installing nodes, and on-demand machines come in five VRAM tiers from 16GB up to 141GB, which matters for larger models. Saved workflows capture the whole stack (JSON, OS, Python environment, ComfyUI build, nodes and models) so reopening one reproduces the exact environment, and a share link drops teammates or students into that same state. The audience splits into two groups. Artists, VFX compositors and educators use the cloud workspace and templates to build and teach without hardware headaches; the site cites courses from ActionVFX and Shoot First as examples. Developers and studios use the serverless API, which turns a cloud-saved workflow into an HTTPS endpoint that autoscales and scales to zero when idle, with versioning and run monitoring, and no DevOps work. Against running ComfyUI locally, RunComfy trades control over your own hardware for convenience, and against closed generator apps it trades simplicity for the full node graph. The tradeoff is a subscription and dependence on network access, but for teams that need reproducibility and shared environments, the saved-workflow model is the differentiator.

How do you use RunComfy?

  1. 1Create a free account and open the cloud workspace
    Sign in to launch the hosted ComfyUI instance. The environment arrives fully configured, so no local install or driver setup is needed.
    RunComfy — Create a free account and open the cloud workspace
  2. 2Start from a template or open the gallery
    Browse over 200 ready-to-run workflows, filter by model such as FLUX, WAN or Qwen Image, and run one as-is to see how the graph is wired.
  3. 3Bring your own workflow.json
    Drop a local workflow file into the auto-setup agent. It installs the missing custom nodes and models and returns a link to a guaranteed-to-run copy.
    RunComfy — Bring your own workflow.json
  4. 4Pick a GPU tier and add your models
    Choose a machine by VRAM (16GB through 141GB) and pull checkpoints from Civitai, Hugging Face or Google Drive. Models persist between sessions.
  5. 5Save and share the environment
    Save the workflow with its OS, Python, node and model state, then send the link so collaborators open the exact same setup.
    RunComfy — Save and share the environment
  6. 6Deploy as a serverless API
    Convert a cloud-saved workflow into an HTTPS endpoint with parameterized inputs, autoscaling and pay-as-you-go GPU billing.
    RunComfy — Deploy as a serverless API

Pros and cons

Pros

  • Unmodified ComfyUI in the cloud, so local workflows transfer without rewritesAI
  • Auto-setup agent resolves custom nodes, dependencies and models from a dropped workflow.jsonAI
  • 200+ curated templates across image, video, upscaling and 3D tasksAI
  • Saved workflows preserve the full environment and can be shared by linkAI
  • Serverless API turns any saved workflow into an autoscaling endpointAI

Cons

  • No pricing figures appear on the homepage, so cost per GPU hour needs checking before committingAI
  • Requires a stable internet connection; nothing runs offlineAI
  • The broader ComfyUI node ecosystem still has a real learning curve for newcomersAI
  • Template quality varies by model, and popular model pages skew toward image generationAI
  • API deployment adds vendor lock-in for workflows that only exist in the cloudAI

How much does RunComfy cost?

Free trial

The homepage invites visitors to get started for free and to launch ComfyUI without installation, but does not state trial length, included GPU hours or credit amounts.

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Support

The site advertises 24/7 support and a Discord community, alongside guides, docs, tutorials and a system status page.

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Integrations

Model sources include Civitai, Hugging Face and Google Drive, with ComfyUI-Manager for nodes. The serverless API exposes saved workflows as HTTPS endpoints callable from any application.

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Features

Hosted, unmodified ComfyUI with 200+ templates, an auto-setup agent for workflow.json files, ComfyUI-Manager node installs, model downloads from Civitai, Hugging Face and Google Drive, five GPU tiers from 16GB to 141GB VRAM, reproducible saved environments, link-based sharing, and a serverless autoscaling API.

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Frequently asked questions about RunComfy

  • Does RunComfy offer a free trial?
    The homepage invites visitors to get started for free and to launch ComfyUI without installation, but does not state trial length, included GPU hours or credit amounts.
  • Does RunComfy have an API?
    Yes, RunComfy offers an API.
  • How do you use RunComfy?
    The walkthrough on this page covers 6 steps: 1. Create a free account and open the cloud workspace 2. Start from a template or open the gallery 3. Bring your own workflow.json 4. Pick a GPU tier and add your models 5. Save and share the environment 6. Deploy as a serverless API.
  • What platforms does RunComfy support?
    RunComfy is available on Web App.
  • What does RunComfy integrate with?
    Model sources include Civitai, Hugging Face and Google Drive, with ComfyUI-Manager for nodes. The serverless API exposes saved workflows as HTTPS endpoints callable from any application.
  • What are the limitations of RunComfy?
    No pricing figures appear on the homepage, so cost per GPU hour needs checking before committing. Requires a stable internet connection; nothing runs offline. The broader ComfyUI node ecosystem still has a real learning curve for newcomers.

Status

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Added10/21/2026

Platforms

Web App

Pricing

FreemiumSubscription