Best free AI video generators: Kling AI, Runway, Hailuo and six more compared

Kling AI's article compares eight free AI video generators, including Kling 4.0, Runway, Hailuo AI, PixVerse, Luma Dream Machine, Pika, Google Veo and Adobe Firefly Video.

Kling 4.0 offers up to 15 reference assets, up to 10 keyframes and 3–30 seconds of native generation, and new users receive free credits on registration.

PixVerse provides 30 daily free credits for non-members, while Google Veo offers 50 daily free credits through Google Flow, with availability varying by region.