Best AI Video Generator 2026: Top 10 Compared for Quality, Cost and Speed

Choosing the right AI video generator in 2026 is hard with 30+ options.

OpenAI Sora leads quality at 5/5. Kling 1.6 is fastest at 20s per clip. Runway Gen-3 best for creative at 35/mo. Stable Video Diffusion is free and open source with 48K GitHub stars. This guide compares all top 10 tools.