MiniMax Hailuo 3 (and Hailuo 3 Max)

MiniMax Hailuo 3 (minimax/hailuo-3) is MiniMax video generation straight at 2K: square, vertical and wide frames up to 3360×1440, 5–15 seconds, up to 9 reference images. The fast sibling is Hailuo 3 Max (minimax/hailuo-3-max): 480p and 768p, noticeably cheaper per second. Generation is asynchronous: POST /v1/videos returns a job, then you poll the status and download the mp4.

Parameters

Parameter	Hailuo 3	Hailuo 3 Max
model	minimax/hailuo-3	minimax/hailuo-3-max
Resolutions	2K (1440×1440 … 3360×1440)	480p, 768p
Duration	5–15 seconds	5–15 seconds
References (input_references)	up to 9 images	none
Prompt cap	7,000 characters	7,000 characters
seed	no	no

Example

curl https://api.mixen.ai/v1/videos \
  -H "Authorization: Bearer $MIXEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "minimax/hailuo-3",
    "prompt": "A drone flies over a night city, neon reflections in puddles",
    "seconds": "8",
    "size": "2560x1440"
  }'

The response is a job (status=queued); then GET /v1/videos/{id} until completed and GET /v1/videos/{id}/content for the mp4. Webhooks and wait: true work as on every video model.

Pricing

Billed per second. Hailuo 3: $0.195 per second (all 2K sizes at one rate). Hailuo 3 Max: $0.075 per second (480p), $0.12 (768p). You are charged actual duration × the size’s rate. Current prices — catalog.

Strengths and limitations

• 2K with no surcharge: on Hailuo 3 every size, including 3360×1440, costs the same rate.
• Up to 9 references — more than most models in the catalog.
• Hailuo 3 Max has no references and tops out at 768p — a quick draft at $0.075/s.
• seed is not supported; a prompt over 7,000 characters returns a 400.

All video models — in the catalog. The general workflow — video guide.