Is ComfyUI private?

Privacy is one of the most important considerations when using AI tools. Artists, researchers, and professionals want assurance that their prompts, images, and models remain secure. With ComfyUI, privacy depends on how you choose to run it: self-hosted, via Promptus, or through a cloud provider. This article explores the differences.

Self-Hosted Privacy

When you install and run ComfyUI on your own computer, everything stays local.

• Your prompts, images, and models never leave your device unless you manually share them.
• The core ComfyUI code has no telemetry or built-in tracking.
• According to the ComfyUI Wiki, the software does not collect personal data; the project respects user privacy.

This option provides maximum confidentiality, especially for sensitive or proprietary work.

Promptus with ComfyUI (Packaged & Optimized)

Promptus makes privacy effortless while also saving time and money.

• Packaged & Optimized: Comes with ComfyUI pre-configured, no messy installs or dependencies.
• Automatic Updates: Unlike self-hosting, Promptus keeps your ComfyUI up to date without extra work.
• Better Support: Direct access to support means fewer errors and faster fixes.
• Added Power: Includes Google’s Gemini 2.5 Flash Image (Nano Banana) for advanced features like multi-image fusion, character consistency, and natural-language editing.

Because Promptus runs locally on your machine, your data stays private — while removing the headaches of manual setup.

Cloud-Hosted Sessions

If you don’t have a capable GPU, you can rent one through services like RunDiffusion. Each session runs on an isolated remote machine, but:

• Your prompts and images are stored temporarily on their servers.
• Cloud providers may keep logs and enforce content rules.
• Data is subject to the provider’s policies, not just your control.

This option is convenient, but not as private as self-hosting or using Promptus locally.

Pros and Cons of Each Option

Conclusion

ComfyUI itself is completely private when run locally. Promptus takes it further by making installation effortless while adding updates, support, and Gemini Nano Banana features — all while keeping your data on your machine. Cloud hosting, on the other hand, trades privacy for convenience and should be used with awareness of provider policies. For maximum control and peace of mind, Promptus with ComfyUI is the best balance of privacy, simplicity, and power.

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