Grammarly vs Runway: Which is Better in 2026?
At a Glance
Overall Scores
Overall
Grammarly
87
Runway
88
Quality
Grammarly
90
Runway
90
Ease of Use
Grammarly
95
Runway
82
Value
Grammarly
78
Runway
75
Feature Comparison
| Feature | Grammarly | Runway |
|---|---|---|
| Long Form Content | ||
| Short Form Copy | ||
| Brand Voice | ||
| Seo Optimization | ||
| Team Collaboration | ||
| Plagiarism Check | ||
| Template Library | ||
| API Access | ||
| Browser Extension | ||
| Multilingual | ||
| Text To Video | ||
| Image To Video | ||
| Video To Video | ||
| Motion Brush | ||
| Background Removal | ||
| Green Screen | ||
| Inpainting | ||
| Upscaling | ||
| Audio Sync | ||
| Lip Sync | ||
| Custom Training |
Specifications
| Spec | Grammarly | Runway |
|---|---|---|
| Word Limit | Unlimited corrections, 1000 AI prompts/mo on Premium | — |
| Languages | English (primary), 7 additional for translation | — |
| Templates | N/A — works inline across all apps | — |
| Integrations | Google Docs, Outlook, Slack, MS Word, 500K+ apps via extension | — |
| Model Backend | Proprietary NLP + GPT-based generative AI | — |
| Browser Extension | Chrome, Firefox, Safari, Edge | — |
| Max Video Length | — | 16 seconds per generation (Gen-3 Alpha) |
| Max Resolution | — | 1080p native, 4K with upscaling |
| Generation Speed | — | ~60-120 seconds per clip |
| Model Version | — | Gen-3 Alpha, Gen-2 (legacy) |
| Fps | — | 24 fps |
| Export Formats | — | MP4, GIF, PNG sequence |
Pricing Comparison
Pros & Cons
What Reddit Says
Grammarly
74% positiveGrammarly is widely loved for everyday writing improvement. Premium is considered essential by many professionals. GrammarlyGO gets mixed reviews — useful but not a ChatGPT replacement.
Runway
74% positiveRunway is widely regarded as the industry leader for AI video. Filmmakers and advertisers praise Gen-3 Alpha's quality. The credit system and pricing are the main complaints — professional use burns through credits quickly.