Kling 4.0 vs Seedance 2.5: Which 30-Second AI Video Model Is Better? (October 2026)
Both make 30-second clips with sound in one pass. Seedance 2.5 takes far more references, has a live API at $0.103 to $0.569 per second, and ranks third on Artificial Analysis. Kling 4.0 adds 10 keyframes, stereo audio and 8,000-token prompts, but no API yet.









