# Runway Gen-4.5 — cinematic motion, faithful to the prompt > Runway Gen-4.5 on eroq: cinematic motion and close prompt adherence, 2 to 10 second 720p clips from text or a start frame, with seeds. Picture only, SFW only. 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. 32 credits / second, on the Creator plan and up. ## At a glance | | | | --- | --- | | Price | 32 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 — SFW work only | ## 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 Sora 2 Pro. On a Hobby budget, Grok Imagine also animates a start frame, in clips from 1 to 15 seconds. ## Starting points - **Gallery dolly-in** — Slow dolly-in at eye level through an empty art gallery at night, spotlights on the paintings, a lone visitor turning to face the camera at the end, cool blue shadows - **Coffee pour insert** — Macro close-up of coffee pouring into a white cup, crema swirling, morning light from the left, shallow depth of field, static camera - **Skate bowl at dusk** — A skateboarder carving a concrete bowl at dusk, tracking shot low to the ground, dust catching the last light, dynamic tempo ## FAQ ### 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, Kling 3.0 Pro or Sora 2 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? 32 credits / second: 64 credits for 2 seconds, 160 credits for 5 and 320 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 SFW only on eroq? Yes. It is moderated upstream and serves SFW work only; mature fiction between adult characters renders on Motion One, eroq's own uncensored engine. ## Related - https://eroq.ai/models/grok-imagine — Grok Imagine - https://eroq.ai/models/veo-3-1 — Veo 3.1 - https://eroq.ai/docs/video — Video API reference - https://eroq.ai/models — All models --- This page as HTML: https://eroq.ai/models/runway-gen-4-5 · Studio: https://eroq.ai/studio · Docs: https://eroq.ai/docs · Machine index: https://eroq.ai/llms.txt