Runway vs Stable Diffusion — AI Video Platform vs the Open-Source Image Stack
Runway and Stable Diffusion lead adjacent but non-overlapping categories — AI video and AI image generation. Runway Gen-3 Alpha produces short video clips; Act-One transfers performances onto character references; the Frames model generates stills for composition. Stable Diffusion is the most flexible open-source image generation stack — thousands of models, LoRA training, ControlNet, ComfyUI graphs. The overlap is narrow but critical: Runway's image-to-video pipeline needs static reference images, and those references must be character-consistent. Stable Diffusion excels at generating references with maximum control but demands significant setup. EZ Character sits between them — generating a locked multi-angle reference set faster than a Stable Diffusion pipeline can be configured, and more consistently across angles than Runway's own still-image generation guarantees.
Runway vs EZ Character at a glance
| Criterion | EZ Character | Runway |
|---|---|---|
| Primary output | Multi-angle character reference sheets | Runway: video clips, character animation | SD: static images, any subject |
| Platform type | Cloud web app, character-focused | Runway: closed cloud platform | SD: open-source, self-hosted or cloud |
| Pricing (entry) | €0 free tier (12 free credits, ~80 images) | Runway: $15/mo Standard | SD: free (self-hosted, GPU required) / $10–50/mo cloud |
| Character consistency method | Multi-angle one-pass generation | Runway: strong within clip, drifts across | SD: IP-Adapter + ControlNet + LoRA |
| Multi-angle output | 8 consistent angles per job | Runway: no | SD: no native — requires manual ComfyUI pipeline |
| Hardware requirement | None | Runway: none (cloud) | SD: 8GB+ VRAM GPU (local) |
| Customisation ceiling | Curated styles | Runway: moderate | SD: unlimited — any model, LoRA, ControlNet, sampler |
| Best for | The reference layer both tools need | Runway: animating references | SD: generating references with max control |
When to use each
EZ Character
You need a locked multi-angle reference set faster than Runway's still-image model or SD's manual pipeline can produce it — without hardware or training requirements.
Runway
Use Runway when you have a reference image and need video output. Use Stable Diffusion when you need total control over every generation parameter.
Frequently asked questions
Try EZ Character free
Upload one image. Get 8 consistent angles. See the difference for your own character.
Generate your reference setFree tier: 12 credits (~80 images). No credit card required.