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

Ray2 vs Runway Gen-4 Turbo

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.

  1. Luma AI

    Ray2

    Released Feb 20, 2025

    • Text to video
    • Image to video
    • Arena1,108
    • From—
    • Max length—
    Full specs Remove Ray2

  2. 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

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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 videoRay2Ray2 1,108 (#46) · Runway Gen-4 Turbo 1,052 (#47) — blind human votes
  • NewestRunway Gen-4 TurboRay2 Feb 20, 2025 · Runway Gen-4 Turbo May 9, 2025
  • Widest inputsSame inputsRay2: Text prompts, Reference images · Runway Gen-4 Turbo: Text prompts, Reference images
  • Native audioNo native audioGenerates an audio track with the video: Ray2 no · Runway Gen-4 Turbo no
  • Image to videoBoth animate imagesStarts from an uploaded image: Ray2 yes · Runway Gen-4 Turbo yes
  • Self-hostingNo open weightsBoth are available only through APIs and apps
  • Most API hostsSame reachRay2: 1 · Runway Gen-4 Turbo: 1
02 — Side by side

Every spec in one table

Dashes mean the data is not published.

Ray2 vs Runway Gen-4 Turbo specifications side by side
SpecificationRay2Luma AIRunway Gen-4 TurboRunway
Quality (blind human votes)
Text to video arenaElo-style score · higher is better1,065 ±17#46 of 48 · 5,250 votes—
Image to video arenaElo-style score · higher is better1,108 ±16#46 of 48 · 9,521 votes (best)1,052 ±13#47 of 48 · 6,801 votes
Output
ProducesVideoVideo
Inputs
Text promptsYesYes
Start image (image to video)YesYes
Video inputNoNo
Audio inputNoNo
Access
WeightsProprietaryProprietary
API hosts11
ReleasedFeb 20, 2025May 9, 2025
03 — Questions

Which should you choose?

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

For image to video, voters prefer Ray2 (Ray2 1,108 (#46) · Runway Gen-4 Turbo 1,052 (#47)). 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 Ray2 and Runway Gen-4 Turbo?

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

Which is newer?

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

Which generates video with sound?

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

Can I run any of these on my own hardware?

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

04 — Keep comparing

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