Runway Gen-4.5
Runway · Video model
Runway's flagship video model, announced on 2025-12-01 and still its newest general video generator as of October 2026 (no Gen-5 exists). Runway's 2026 releases focused on world models (GWM), real-time characters and a multi-model workspace around Gen-4.5.
Current
ReleasedDec 1, 2025
Context window—
Input → outputtext, image → video
API pricegen4.5: 12 credits/sec ($0.12/sec); credits are $0.01 per credit in the developer portal.
Consumer accessRunway plans: Standard $15/month ($12/month yearly, 625 credits), Pro $35/month ($28/month yearly, 2,250 credits), Max $95/month ($76/month yearly, 9,500 credits); Gen-4.5 costs 60 credits per 5 s.
Best for
Creative and film teams who want a strong video model inside a full editing workspace.
Overview
Runway's flagship video model, announced on 2025-12-01 and still its newest general video generator as of October 2026 (no Gen-5 exists). Runway's 2026 releases focused on world models (GWM), real-time characters and a multi-model workspace around Gen-4.5.
Strengths and limits
- Improved physics, human motion and camera movement (Runway claims)
- Available in web app and API
- Part of a workspace with Aleph 2.0 editing, Act-Two and third-party models
- No native audio generation reported
- Not listed on the current Artificial Analysis text-to-video board