Video model comparison · 2 models · Updated Nov 2, 2026

Runway Gen-4 Turbo vs Ray2

Preferred for image to video: Ray2 · Newest: Runway Gen-4 Turbo · Native audio: No native audio. Quality scores are blind human-preference votes; specs and prices come from each lab’s listings.

Runway
Runway Gen-4 Turbo
Released May 9, 2025
- Text to video
- Image to video
- Arena1,052
- From—
- Max length—
Full specs Remove Runway Gen-4 Turbo
Luma AI
Ray2
Released Feb 20, 2025
- Text to video
- Image to video
- Arena1,108
- From—
- Max length—
Full specs Remove Ray2
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01 — At a glance

Where they differ

Quality is the arena score from blind, side-by-side human votes. Price, length and resolution come from each lab’s own listings.

Preferred for image to videoRay2Runway Gen-4 Turbo 1,052 (#47) · Ray2 1,108 (#46) — blind human votes
NewestRunway Gen-4 TurboRunway Gen-4 Turbo May 9, 2025 · Ray2 Feb 20, 2025
Widest inputsSame inputsRunway Gen-4 Turbo: Text prompts, Reference images · Ray2: Text prompts, Reference images
Native audioNo native audioGenerates an audio track with the video: Runway Gen-4 Turbo no · Ray2 no
Image to videoBoth animate imagesStarts from an uploaded image: Runway Gen-4 Turbo yes · Ray2 yes
Self-hostingNo open weightsBoth are available only through APIs and apps
Most API hostsSame reachRunway Gen-4 Turbo: 1 · Ray2: 1

02 — Side by side

Every spec in one table

Dashes mean the data is not published.

Runway Gen-4 Turbo vs Ray2 specifications side by side
Specification	Runway Gen-4 TurboRunway	Ray2Luma AI
Quality (blind human votes)
Text to video arenaElo-style score · higher is better	—	1,065 ±17#46 of 48 · 5,250 votes
Image to video arenaElo-style score · higher is better	1,052 ±13#47 of 48 · 6,801 votes	1,108 ±16#46 of 48 · 9,521 votes (best)
Output
Produces	Video	Video
Inputs
Text prompts	Yes	Yes
Start image (image to video)	Yes	Yes
Video input	No	No
Audio input	No	No
Access
Weights	Proprietary	Proprietary
API hosts	1	1
Released	May 9, 2025	Feb 20, 2025

03 — Questions

Which should you choose?

Which is better, Runway Gen-4 Turbo or Ray2?

For image to video, voters prefer Ray2 (Runway Gen-4 Turbo 1,052 (#47) · Ray2 1,108 (#46)). Arena scores come from blind, side-by-side human votes on the same prompts; when the gap is inside both models’ error margins we call it a tie. Test your own prompts before you commit.

What is the difference between Runway Gen-4 Turbo and Ray2?

Runway Gen-4 Turbo is a video model from Runway (May 9, 2025), taking text prompts and reference images and producing video. Ray2 is a video model from Luma AI (Feb 20, 2025), taking text prompts and reference images and producing video.

Which is newer?

Runway Gen-4 Turbo May 9, 2025; Ray2 Feb 20, 2025.

Which generates video with sound?

Generates an audio track with the video: Runway Gen-4 Turbo no; Ray2 no.

Can I run any of these on my own hardware?

No open weights. Both are available only through APIs and apps.