ComfyUI vs Forge
Forge runs locally. It’s an open-source fork of the Stable Diffusion Web UI - not a cloud product. If you read otherwise in an old database row, that was wrong. Now the real comparison: Gradio tabs (Forge) versus ComfyUI’s node graph - prove the claim that fits your hands, not forum hype.
Feature Comparison
| Feature | Forge | ComfyUI |
|---|---|---|
| Runs Locally | Yes | Yes |
| Open Source | Yes | Yes |
| NSFW Allowed | Yes | Yes |
| Type | Local / Offline | Local / Offline |
Quick Verdict - March 2026
Forge = familiar A1111-style UI with a forked backend tuned for many SDXL-era pains. ComfyUI = maximum flexibility and workflow files - at the cost of learning graph logic.
Pick Forge if you want tabs + extensions without nodes. Pick ComfyUI if you’ll save graphs as code and accept setup overhead.
Side-by-side spec table
| Forge (SD Web UI fork) | ComfyUI | |
|---|---|---|
| UI type | Browser tabs, prompts, img2img - A1111-shaped | Node graph - wires between operations |
| Runs locally | Yes | Yes |
| Open source | Yes | Yes |
| Extension model | Large A1111 ecosystem - not 100% parity | Custom nodes - different packaging, huge variety |
| Strength | Fast mental switch from A1111/Forge muscle memory | Composable automation and shared JSON |
| Best for | Prompt → image with classic controls | Pipelines, video, multi-stage graphs |
Where Forge wins - actually test this
- Same vocabulary as half the internet’s tutorials: txt2img, hires fix, ControlNet tabs - if the fork’s merge kept your pet feature.
- Less graph bookkeeping when you just need one more seed variant.
- VRAM story for SDXL-class work is a documented fork goal - verify on your card, don’t trust my sentence alone.
Where ComfyUI wins - claims I’ll stand behind
- Workflow portability: Export/import JSON beats screenshots for reproducibility.
- Bleeding-edge nodes: New techniques often land as node packs before they’re “one click” anywhere else.
- When tabs lie: If you need branching logic or multi-model graphs, nodes expose what tabs hide.
Setup compared
Forge: Same clone → launcher culture as A1111. Point model dirs, read the fork’s current README - Forge’s ecosystem forked again (reForge, Neo, etc.) for some users. Stability varies by branch - that’s not FUD, that’s git.
ComfyUI: You will fight missing custom nodes at least once. Manager + pinned workflows reduce thrash.
Hardware & performance
- Neither app “invents VRAM.” Big models, big images, big VRAM - quantization and tile tricks buy room, not miracles.
- Forge vs Comfy speed threads are noisy: people mix different samplers, resolutions, and extensions. Benchmark honestly or ignore the flex posts.
- Apples-to-apples: Same checkpoint, same resolution, lock VAE and scheduler - still expect small engine deltas.
Who should use what
| Forge if you… | ComfyUI if you… |
|---|---|
| Want A1111 ergonomics without learning nodes | Want graphs you can diff like code |
| Rely on specific Web UI extensions | Need workflows people share as files |
| Refuse to maintain a node zoo | Accept dependency churn as the price of power |
LocalForge AI is listed last on purpose: one option for less manual wiring - not a magic “best UI.”
About Forge
Performance-optimized fork of AUTOMATIC1111 with better VRAM handling. Runs models on 8GB cards that crash in A1111.
Full Forge profile →About ComfyUI
Node-based Stable Diffusion frontend for power users. Visual workflow editor with full pipeline control and native Flux support.
Full ComfyUI profile →