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Runway Gen-4.5 vs Seedance 1.5 Pro
Seedance 1.5 Pro edges out Gen-4.5 overall (Gen-4.5 40.0 vs Seedance 1.5 Pro 53.0.) Seedance 1.5 Pro performs well on dialogue-led videos where lip-sync and camera movement quality matter. It is a strong fit for talking-head narratives, multilingual spoken scenes, and cinematic promo cuts. It is less reliable for text-heavy compositions, crowded action choreography, and scenes requiring precise object-level interactions. The main tradeoffs are in Readable text overlays, Crowded action scenes, Precision object interactions, where Gen-4.5 tends to score better.
Gen-4.5Runway | Seedance 1.5 ProByteDance |
|---|---|
Good for
| Good for
|
Bad for
| Bad for
|
Modalities
| Capability | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Text input | ||
| Image input | ||
| Video input | ||
| Audio input | ||
| Image output | ||
| Audio output |
Providers
Provider
Runway
runway-ml
Runway is the platform that serves Gen-4.5 requests, pricing, and availability.
Provider
ByteDance
bytedance
ByteDance is the platform that serves Seedance 1.5 Pro requests, pricing, and availability.
Physics
How well the model simulates real-world physics: gravity, momentum, collisions, and natural movement.
Gen-4.5 leads on physics (+0.9), with a measurable advantage over Seedance 1.5 Pro. The clearest separation is on Physics (+0.9). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If physics is a priority for your prompts, Gen-4.5 is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Physics | 37.4 | 36.6 |
Prompt and Logic
Measures how accurately the model follows prompts and maintains logical consistency throughout the video.
Seedance 1.5 Pro leads on prompt and logic (+20.5), with a measurable advantage over Gen-4.5. The clearest separation is on Scene Consistency (+38.1). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If prompt and logic is a priority for your prompts, Seedance 1.5 Pro is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Prompt Adherence | 47.0 | 67.3 |
| Logic Consistency | 35.6 | 38.7 |
| Scene Consistency | 38.1 | 76.2 |
Aesthetics
Visual quality including cinematography, artistic taste, and overall production value.
Seedance 1.5 Pro leads on aesthetics (+9.5), with a measurable advantage over Gen-4.5. The clearest separation is on Cinematography (+18.7). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If aesthetics is a priority for your prompts, Seedance 1.5 Pro is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Cinematography | 44.0 | 62.7 |
| Taste | — | — |
| Quality | 0.3 | 0.5 |
Animation
Performance on animated content styles including 2D, 3D, and anime-style animation.
Seedance 1.5 Pro leads on animation (+11.7), with a measurable advantage over Gen-4.5. The clearest separation is on 3D Animation (+30.5). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If animation is a priority for your prompts, Seedance 1.5 Pro is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| 2D Animation | 41.0 | 59.0 |
| 3D Animation | 38.5 | 69.0 |
| Anime Animation | 52.5 | 39.0 |
Humans
Accuracy of human rendering including body proportions, hand details, and realistic actor performances.
Seedance 1.5 Pro leads on humans (+16.6), with a measurable advantage over Gen-4.5. The clearest separation is on Actor Performance (+30.3). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If humans is a priority for your prompts, Seedance 1.5 Pro is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Human | — | 56.6 |
| Hands | 48.0 | 50.9 |
| Actor Performance | 38.0 | 68.3 |
Objects and Animals
Quality of rendering inanimate objects and animals with accurate shapes, textures, and movements.
Seedance 1.5 Pro leads on objects and animals (+3.0), with a measurable advantage over Gen-4.5. The clearest separation is on Animals (+9.9). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If objects and animals is a priority for your prompts, Seedance 1.5 Pro is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Objects | 42.4 | 38.4 |
| Animals | 40.2 | 50.1 |
Text
Ability to render readable, accurate text and typography within generated videos.
Gen-4.5 leads on text (+25.5), with a measurable advantage over Seedance 1.5 Pro. The clearest separation is on Text Fidelity (+25.5). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If text is a priority for your prompts, Gen-4.5 is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Text Fidelity | 30.5 | 5.0 |
Cost and Speed
Practical factors including pricing per video and generation latency.
Gen-4.5 leads on cost and speed (+3.0), with a measurable advantage over Seedance 1.5 Pro. The clearest separation is on Price / min (+9.0). Across the other sub-metrics in this group, the gap is smaller but generally consistent with the overall direction. If cost and speed is a priority for your prompts, Gen-4.5 is the safer pick here.
| Metric | Gen-4.5 | Seedance 1.5 Pro |
|---|---|---|
| Price / sec | $0.050 | $0.200 |
| Price / min | $3.00 | $12.00 |
| Latency | 0ms | 0ms |