Runway Gen-4 vs. Sora 2 — AI video for creators

End-of-lesson check

15 questions · take it digitally for instant feedback at tendril.neural-forge.io/learn/quiz/end-model-runway-vs-sora-builders

1. What was the primary reason OpenAI discontinued Sora 2 in March 2026?

   1. The video quality failed to meet industry standards
   2. Inference costs were too high to price sustainably
   3. Legal complications arose with film studios
   4. Users complained about difficult interfaces

2. A student wants to create a short film where the same character appears across multiple scenes. Which model should they choose?

   1. Runway Gen-4 because it offers consistent character identity across cuts
   2. Veo 3.1 because it generates audio with video
   3. Pika 2.2 because it has the cheapest pricing
   4. Kling 3.0 because it handles human motion best

3. What does the Act-One feature in Runway Gen-4 allow creators to do?

   1. Drive a generated character using a webcam
   2. Generate synchronized audio for videos
   3. Create 2-minute video clips
   4. Remove watermarks from exports

4. Which video model is developed by Kuaishou and is popular with consumers in China?

   1. Veo 3.1
   2. Runway Gen-4
   3. Pika 2.2
   4. Kling 3.0

5. What unique capability does Veo 3.1 offer that the other models in the comparison do not emphasize?

   1. Longest clip duration at 2 minutes
   2. Native audio generation synchronized with video
   3. Cheapest pricing for consumers
   4. Best-in-class motion realism

6. What is the approximate clip length limit for videos created with Runway Gen-4?

   1. 10 seconds
   2. 2 minutes
   3. 30 seconds
   4. 5 seconds

7. Which model is described as the cheapest option in the current video-model landscape?

   1. Kling 3.0
   2. Veo 3.1
   3. Pika 2.2
   4. Runway Gen-4

8. Before building a product that relies on a video model, what does the lesson specifically warn against?

   1. Using models with free trials
   2. Building on models without a public roadmap
   3. Ignoring pricing tiers
   4. Choosing models from small companies

9. A creator wants to make TikTok-style short videos with effects. Which model should they consider?

   1. Runway Gen-4
   2. Kling 3.0
   3. Veo 3.1
   4. Pika 2.2

10. Since November 2024, what does YouTube require for uploads containing substantially AI-generated content?

    1. Higher resolution uploads
    2. Disclosure or labeling of the AI-generated content
    3. A minimum 5-minute duration
    4. Removal of all music

11. A user already pays for Gemini Advanced. Which video model would integrate most seamlessly with their existing workflow?

    1. Runway Gen-4
    2. Kling 3.0
    3. Pika 2.2
    4. Veo 3.1

12. Why does the lesson advise against attempting to remove watermarks like SynthID from AI-generated videos?

    1. Because it requires expensive software
    2. Because YouTube automatically detects removal attempts
    3. Because the watermark is visible anyway
    4. Because it protects viewers and is a good practice

13. Which model was specifically built for professional filmmakers rather than consumers?

    1. Pika 2.2
    2. Kling 3.0
    3. Sora 2
    4. Runway Gen-4

14. What is the maximum clip duration available in Kling 3.0?

    1. 10 seconds
    2. 30 seconds
    3. 5 minutes
    4. 2 minutes

15. Which discontinued model was known for having the best motion realism at its launch?

    1. Sora 2
    2. Runway Gen-4
    3. Veo 3.1
    4. Pika 2.2