A node-based workflow editor can organize prompts, local models, API calls, and repeatable media jobs. Krea's proprietary real-time models, GPU fleet, enhancement stack, licensed data, and hosted delivery remain outside the scope of a small open-source project.
Price
$9/mo starting
Potential saving
$108/yr
Build scope
a focused prototype in one sitting
Community signal
1 community replacement
The build decision
Organize a prompt or creative brief, connect a local model or API-backed generation step, run the job, and preserve the exact workflow and parameters so the result can be compared or rerun later.
The useful open-source target is the repeatable workflow around the product. Build the part you need, own the data and code, and name the hosted or proprietary parts you are deliberately leaving out. That produces a more durable alternative than copying a brand name onto a thin API wrapper.
The prompt
Build a focused, open-source alternative to Krea's workflow layer.
Use a small web app with a visual node canvas, a local ComfyUI backend, SQLite, and a documented one-command local setup. Let users create prompt, negative-prompt, seed, dimensions, model, image-to-image, and mask nodes; run a graph; and save the exact workflow JSON next to each output.
Add a searchable contact sheet with compare, favorite, annotate, and rerun actions. Keep data local by default, make API keys optional and server-side only, and show useful errors when a model or workflow is unavailable.
Do not claim to reproduce Krea's proprietary models, licensed data, GPU fleet, hosted moderation, or real-time delivery. Finish with tests and a README that explains the architecture, data location, backups, and hardware requirements.This prompt is intentionally scoped to a useful replacement loop. It does not ask an agent to copy proprietary models, data, branding, or a hosted service.
The paid product
People pay for the model and compute fleet, not merely the canvas. The subscription bundles GPU procurement, model access, enhancement tools, queueing, storage, moderation, and rapid model replacement into a smooth hosted experience.
The trade-off
The escape hatch
A self-hostable node-based editor for composing, inspecting, and rerunning connected creative operations.
Use it when the visual pipeline is the part you need to own. Connect it to local tools or a hosted generation service instead of treating the editor as a complete replacement for Krea's model and GPU platform.
Project status: published. Review its README, license, dependencies, and deployment requirements before using it in production.
Build the workflow
The hosted workflow builder provides a managed way to explore node-based generation. If you are building a product around the canvas, Muapi can handle the model-execution layer while your application owns workflow state, permissions, templates, and the user experience.
POST https://api.muapi.ai/api/v1/{model}
x-api-key: $MUAPI_API_KEY
{ "prompt": "your workflow input" }
GET https://api.muapi.ai/api/v1/predictions/{request_id}/resultThe numbers
| Plan | Monthly | Annual / mo | What it covers |
|---|---|---|---|
| Free | $0/user | $0/user | Daily compute allowance with limited access to creative tools. |
| Basic | $9/user | $5.40/user | Monthly compute units, selected video models, LoRA training, and upscale access. |
| Pro | $35/user | $21/user | More compute plus the full video catalog and Nodes/Apps workflow features. |
| Max | $105/user | $63/user | Higher compute allowance, relaxed generations, and larger LoRA jobs. |
| Business | $200/workspace | $120/workspace | Workspace seats, larger compute allowance, and business controls. |
| Enterprise | Custom | — | Custom compute packages, spend controls, SLA, audit logs, and support. |
Annual prices shown on the source page used the yearly-toggle discount. Compute allowances and one-time packs have their own expiry and rollover terms. Pricing checked 2026-08-14. Check the current source ↗
Questions
You can build a useful open-source alternative for prompt organization, node-based workflows, local generation, API-backed jobs, and reproducible outputs. You should not claim parity with Krea's proprietary real-time models, GPU fleet, enhancement stack, or hosted delivery.
Vibe Workflow is an open-source alternative to the visual workflow portion of Krea. It gives you a self-hostable node canvas and an extensible pipeline layer; model execution, storage, collaboration, and operations depend on what you connect to it.
You give up Krea's proprietary real-time models, hosted GPU capacity, enhancement stack, licensed data, managed moderation, and fast global delivery. If you mainly need a visual workflow you can change and self-host, the open-source route is a better fit.