R

Gen

Model family

Runway's video generation family — Gen-1 through Gen-4 — served through its developer API.

At a glance

Current release

From the release row Gen-4.5. gen4.5 is 12 credits per second at $0.01 per credit, one rate with no resolution tiers. gen4_turbo is 5 credits/s ($0.05/s).

Family record: Official documentation · 5 Sep 2026

Built on it

1 product in this catalogue names this family on their own pages.

• Runway API

  Runway

  Official documentation · 5 Sep 2026

Releases

• Gen-1

  Feb 2023 · Official documentation ↗

  Video-to-video model: 'Gen-1 uses words and images to generate new videos out of existing ones.'

• Gen-3 Alpha

  17 Jun 2024 · Press release ↗

  'The first of the next generation of AI foundation models trained by Runway on a new infrastructure built for large-scale multimodal training.' Gen-3 Alpha Turbo, the first model in Runway's API, followed on 2024-08-14.

• Gen-4

  1 Apr 2025 · Official documentation ↗

  'A next-generation AI video generation model built for media generation and world consistency'; Gen-4 Turbo followed on 2025-04-07.

• Gen-4.5

  1 Dec 2025 · Press release ↗

  Runway's current video model, which it says ranked first on the Artificial Analysis text-to-video benchmark; on all paid plans from 2025-12-11.