HeyGen Video — HeyGen's video model with its own sound, built on MiniMax H3. Text-to-video, image-to-video from a first frame, and reference-to-video that keeps the products, people or places from up to 9 images, 3 videos and 3 audio clips. 5 to 15 seconds, 480p to 2K.
~1-2 min
curl https://www.flixly.ai/api/v1/generate \
-H "Authorization: Bearer flx_live_..." \
-H "Content-Type: application/json" \
-d '{
"model": "heygen-video",
"prompt": "A beautiful sunset over the ocean",
"type": "TEXT_TO_VIDEO"
}'Get your API key from the Developer Portal.
Premium video generation model with native audio
Kling 4.0 — Kling AI's newest video model with native sound. Text-to-video, image-to-video with an optional last frame, and reference-to-video from up to 10 images. 3 to 30 seconds at 720p or 1080p.
ByteDance's newest video model. Generates up to 30 seconds in a single shot with synchronized audio — dialogue, music, and effects in the same pass — from a prompt, a start frame, or up to 50 image, video, and audio references.
The premium tier of Alibaba's Wan 3.0 — faster turnaround, cinematic motion, and stronger visual continuity. Text, image, and reference modes, native 30-second clips in a single pass, with audio.