All tasks / Models
Gen-4.5
Runway's in-house video generation model line, used in the Runway app and API.
- Runway
- Closed
- Released 1 Dec 2025
Where it ranks
- CVideo generationModels · Cloud · 913 on Artificial Analysis Video Arena: Text to Video, no audio (AA-Video-T2V-Silent v2.1) (secondary benchmark)
Facts
- Vendor
- Runway
- Family
- Runway Gen
- Released
- 1 Dec 2025
- Weights
- Closed: API and apps only
- License
- proprietary
- API price
- $0.12 per second of video (720p, no audio; $7.20/min as listed on AA)
- Access
- Free tier available
- Last verified
- 18 Oct 2026
Price from artificialanalysis.ai, 18 Oct 2026.
Benchmark results
| Benchmark | Result | Entry on the leaderboard | As of | Source |
|---|---|---|---|---|
| Artificial Analysis Video Arena: Image to Video, no audio (AA-Video-I2V-Silent v1.0) | 1,265 | Runway Gen-4.5 (720p)AA-Video-I2V-Silent v1.0 (no audio) board | 18 Oct 2026 | artificialanalysis.ai |
| Artificial Analysis Video Arena: Text to Video, no audio (AA-Video-T2V-Silent v2.1) | 913 | Runway Gen-4.5 (720p)AA-Video-T2V-Silent v2.1 (no audio) board; AA note: generated on the 61% of prompts within Runway's 1,000-character limit | 18 Oct 2026 | artificialanalysis.ai |
| LMArena (Arena) Text-to-Video leaderboard | 1,225 | runway-gen-4.5LMArena official leaderboard dataset (HF lmarena-ai/leaderboard-dataset, config text_to_video, split latest, publish date 2026-09-22); arena.ai page itself returned HTTP 403 | 22 Sep 2026 | datasets-server.huggingface.co |
Where you can use it
- AAdobe FireflyApps · Cloud
- SComfyUIWorkflow platforms · Local
- SFigma WeaveWorkflow platforms · Cloud
- SFLORAWorkflow platforms · Cloud
- SKreaApps · Cloud
- SMagnific (formerly Freepik)Apps · Cloud
- SReplicateRuntimes & APIs · Cloud
- SRunwayApps · Cloud
Earlier versions
- Gen-4 · 31 Mar 2025
- Gen-3 Alpha · 17 Jun 2024