Head-to-head comparison
Runway Gen-4 vs Sora 2, comparison 2026
Runway Gen-4
8.5/10
Runway ML
Cinematic image and camera movement from the prompt, plus editing of finished video in Aleph.
Sora 2
Shut downOpenAI
Shut down by OpenAI: app closed April 26, 2026, API shut down September 24, 2026.
TL;DR, key differences
| Attribute | Runway Gen-4 | Sora 2 |
|---|---|---|
| Starting price | $15/mo | shut down |
| Pro / higher plan | $95/mo | shut down |
| English prompts | yes | shut down |
| Native audio | yes | shut down |
| Image-to-video | yes | shut down |
| Max clip length | 52s | n/a |
| Availability | worldwide | shut down |
| Rating (our tests) | 8.5/10 | 9.2/10 (archived) |
Strengths
Runway Gen-4, pros
- +Cinematic camera movement described in the prompt (dolly, orbit, crane)
- +Strong image-to-video, animates a product photo or a still frame
- +References: the same character or product across many shots
- +Aleph 2.0: change an object, lighting, or background in a finished clip
- +No watermark from the Standard plan up
Sora 2, pros
- +Native audio with lip-sync in one render (until shutdown)
- +Very realistic physics for motion, liquids, and fabric
- +Prompts written for Sora 2 transfer well to Veo 3.1 and Kling 3
Weaknesses
Runway Gen-4, cons
- −No motion brush or camera sliders (Gen-2 and Gen-3 features, both retired)
- −Credits go fast: Gen-4.5 costs 12 credits per second
- −Weaker Polish lip-sync than Veo 3.1
- −Free plan is a one-time 125 credits, no renewal
- −Aleph 2.0 is expensive: 140 credits per 5 seconds
Sora 2, cons
- −Shut down: app since April 26, 2026, API since September 24, 2026
- −OpenAI named no successor or replacement model in the API
- −Any Sora 2 pipeline has to move to another model
- −App content had to be downloaded before the shutdown
When to choose which tool
Choose Runway Gen-4 if
- →Product ads with cinematic camera movement
- →Image-to-video from product photos and stills
- →Fixes in a finished clip without regenerating (Aleph)
- →A series of shots with the same character or product (References)
Choose Sora 2 if
- →Quality benchmark when choosing a successor
- →Archived clips and prompts to move to Veo 3.1
Verdict
Shut down by OpenAI: app closed April 26, 2026, API shut down September 24, 2026. Today the choice is simple: Runway Gen-4. Sora 2's rating (9.2/10) comes from tests run before the shutdown and no longer affects the pick. We keep this comparison to show what you lose and gain by switching.