Video engine
Runway Gen-4.5 — cinematic motion, faithful to the prompt
Runway Gen-4.5 is Runway's model for cinematic scene work: strong motion quality and close adherence to what the prompt asks for, in clips from 2 to 10 seconds at 720p. It works from text alone or animates a start frame, and takes a seed so a good take can be revised instead of re-rolled. It renders picture only — no soundtrack. 51 credits / second, on the Creator plan and up.
Opens the studio with this filled in. Sign up when you generate: 40 free credits, no card.
- Price
- 51 credits / second at 720p
- Length
- 2 to 10 seconds, one-second steps
- Resolution
- 720p
- Formats
- 16:9 · 9:16
- Sound
- No soundtrack
- Inputs
- Text · start frame · seed — cast and elements ride as text
- Access
- Creator plan and up ($49/month)
- Content
- Moderated upstream by the provider
What Runway Gen-4.5 is for
Gen-4.5 is the engine to reach for when the prompt is precise and the picture has to match it: a specific camera path, a specific action, a specific light. Its grid starts at 2 seconds, which suits inserts, reaction shots and B-roll beats between longer clips in a Film.
It renders no sound, so it fits footage whose audio comes from elsewhere — a voice-over, music laid in the edit.
How to prompt it
- →Be literal and ordered: subject, action, camera, light — one clause each.
- →Name the camera move precisely — "slow dolly-in at eye level", not "cinematic camera" — or pick one of the director's rack's 24 moves.
- →Animating a still? Set it as the start frame and describe only what moves.
- →Runway reads no reference pictures, so your cast rides as text: describe characters concretely, or start from a frame of them for an exact face.
- →Keep the seed of a take you like and change one phrase at a time.
Where it sits in the lineup
Gen-4.5 is the precise, silent option on the Creator plan. For sound and reference pictures, Veo 3.1 or Kling 3.0 Pro; for longer takes, Seedance 2.5 or Wan 3.0. On the same plan, Grok Imagine also animates a start frame, in clips from 1 to 15 seconds.
Starting points
Pick one: it goes into the box at the top, ready to generate.
Frequently asked questions
Does Runway Gen-4.5 generate sound?
No. It renders picture only — there is no soundtrack. For native sound, pick Veo 3.1, Seedance 2.5 or Kling 3.0 Pro.
How long can a Runway Gen-4.5 clip be?
2 to 10 seconds, in one-second steps, at 720p in 16:9 or 9:16.
How much does a Runway Gen-4.5 clip cost?
51 credits / second: 102 credits for 2 seconds, 255 credits for 5 and 510 credits for 10. A failed render refunds automatically.
Can I animate an image with Runway Gen-4.5?
Yes: set it as the start frame and the clip opens on that picture. Runway takes no end frame and reads no reference pictures, so without a frame your cast and elements ride as text.
Is Runway Gen-4.5 uncensored on eroq?
No. It is moderated upstream by its provider; a prompt it refuses returns content_blocked and costs nothing. Motion One, eroq's own engine, is the uncensored one — and it retains nothing upstream.
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