Runway ML
T3 — Natural LanguageCreative suite with video and image generation.
How Runway ML reads prompts
Runway ML is classified as Natural Language (T3) — conversational sentences, no special syntax. Video-first platform. Supports [00:01] timestamp syntax for timed events. No negative prompts. Camera movement language critical. 4-10 second clips. Concise directive prompts preferred.
Prompt tips
Runway excels at video concepts. Think in motion and atmosphere.
Why prompt optimisation matters
Better results with focused visual descriptions. Promagen's Prompt Lab automatically formats your selections into Runway ML's native prompt structure.
Negative prompt support
Runway ML does not support negative prompts. Promagen converts exclusion requests into positive reinforcement for this platform — for example, "blurry" becomes "sharp focus".
Full negative prompt support guide →Platform notes
Multi-modal platform; concise prompts recommended for image generation.
Example prompt
Frequently asked questions
What is the character limit for Runway ML?
Runway ML accepts prompts up to 1000 characters. The ideal writing range is 200–400 characters (around 100 characters is the sweet spot where the platform produces its best results).
Does Runway ML support negative prompts?
No. Runway ML does not support negative prompts. Promagen converts exclusion requests into positive reinforcement for this platform (for example, "blurry" becomes "sharp focus").
How should I write prompts for Runway ML?
Runway ML uses Natural Language prompt format (T3). Conversational sentences, no special syntax. Runway excels at video concepts. Think in motion and atmosphere.
Other Natural Language platforms
These platforms share the same prompt architecture — prompts written for one will generally work well on the others.