JUN 23, 2026

Grok Imagine 1.5 and Seedance 2.0 4K on PixVerse

June 23, 2026

The PixVerse API v2 adds xAI Grok Imagine 1.5 as an image-to-video model, brings Grok into video extend, and unlocks 4K on Seedance 2.0. Every clip below started from this single source image.

Source image — two friends in a vintage living room

Grok Imagine 1.5 — image-to-video

Grok Imagine 1.5 is image-to-video only — pass the first frame via first_frame_path on POST /videos/create with model: grok-imagine-1.5. It runs at 480p / 720p, 1-15s, and merges native audio (the spoken line below is generated, not added). This one is 720p, 5 seconds.

curl — POST /videos/create 
curl --location 'https://api.useapi.net/v2/pixverse/videos/create' \
--header 'Authorization: Bearer user:12345-…' \
--form 'email="[email protected]"' \
--form 'model="grok-imagine-1.5"' \
--form 'prompt="The red-haired woman on the left turns and slaps the brunette across the cheek, then snaps a cockney one-liner — ornate vintage living room"' \
--form 'quality="720p"' \
--form 'duration="5"' \
--form 'first_frame_path="upload/<uuid>.webp"'

Extend the result with Grok

POST /videos/extend now accepts model: grok-imagine (480p / 720p, 2-10s, native audio). Point it at the video_id from the clip above and it continues the scene — here the 5-second source grows to a 10-second exchange.

curl — POST /videos/extend 
curl --location 'https://api.useapi.net/v2/pixverse/videos/extend' \
--header 'Authorization: Bearer user:12345-…' \
--form 'email="[email protected]"' \
--form 'model="grok-imagine"' \
--form 'video_id="<video_id of the clip to extend>"' \
--form 'prompt="The other woman recovers, then slaps back — both glaring at each other"' \
--form 'quality="720p"' \
--form 'duration="5"'

Seedance 2.0 — 4K

seedance-2.0 now generates 4K. Pass quality: 2160p on POST /videos/create — the output is a true 2160×3840 video delivered as HEVC. The same prompt and source image, at 4K, 5 seconds.

curl — POST /videos/create 
curl --location 'https://api.useapi.net/v2/pixverse/videos/create' \
--header 'Authorization: Bearer user:12345-…' \
--form 'email="[email protected]"' \
--form 'model="seedance-2.0"' \
--form 'prompt="The red-haired woman on the left turns and slaps the brunette across the cheek — ornate vintage living room"' \
--form 'quality="2160p"' \
--form 'duration="5"' \
--form 'first_frame_path="upload/<uuid>.webp"'

See Model Capabilities for the full per-model quality, duration, and audio matrix.