MiniMax H3

What it is, in three sentences

1. Open-weight omni-modal system: unified multimodal context in, video with native stereo audio out (Hugging Face MiniMax-H3 model card).
2. Clip length is listed as 4–15 seconds at 24 FPS; short edge defaults to 768 pixels, and vendor 2K generation uses H3-Regenerate-2K, which is not in the open H3-Base release (MiniMax local-deploy docs).
3. You can try hosted UIs, download weights, call fal/MiniMax APIs, or run ComfyUI 0.30+ templates that ship quantized Comfy-Org files.

Demo videos

Embedded public demos. The first is from Comfy Org; the others are community walkthroughs that show real local output. MiniMax’s own sample gallery lives on their open-source news page.

Official write-up: MiniMax H3 is now open source.

Specs and limits

Prompt starters

Five copy-ready prompts. Full set and a browser generator: MiniMax H3 prompts.

• Editorial tech product film

  Reference images + text · Adapted from Comfy Org day-0 examples

  Editorial tech product film. The transparent gaming mouse from <Picture 1> in its original scene: a pitch-black studio void with a dark, subtle reflective surface, lit by dramatic duotone vibrant blue and warm neon orange rim lighting.
  SHOT 1: open exactly on image 1; slow push-in as the lights pulse through the acrylic shell.
  SHOT 2: extreme macro of the scroll wheel; warm orange beam sweeps the metal internals.
  SHOT 3: low-angle beauty shot; the mouse levitates a few centimeters and rotates slowly, then fades to silhouette.
  Audio: deep pulsing sub-bass, sharp tactile clicks, glassy whoosh on cuts.

• Bold comic-book action with synced SFX

  Reference frames + audio · Adapted from Comfy Org day-0 examples

  Bold comic-book ink style, heavy linework, red and blue-black palette, night city. Use <Picture 2> and <Picture 1> as reference frames and <Audio 1> exactly as it is.
  CUT 1: top-down view of the little boy superhero on the rooftop — red cape fluttering, cocky grin into camera — comic overlay text word by word: "GET READY TO" / "MEET" / "YOUR" / "MAKER".
  TRANSITION: violent whip pan that smears the floating words.
  CUT 2: low hero angle on a colossal black mech-kaiju roaring over the skyline; speed-lines and ink splatter at the roar peak.

• High-fashion editorial with multi-image refs

  Three reference images · Adapted from Comfy Org day-0 examples

  High-fashion editorial film, luxurious slow motion, soft gradient studio sky.
  MUSIC & SFX: cinematic score with deep taiko drums, shimmering koto plucks, modern sub-bass.
  SHOT 1: beside her, the mask hangs broken into the floating shard formation of <Picture 2>.
  SHOT 2: gold seams ignite; shards snap together until the mask fuses.
  SHOT 3: the golden dragon of <Picture 3> swoops through the frame.
  SHOT 4: the mask pulls onto her face; glowing kintsugi veins spread down the jacket.
  SHOT 5: she lands on the dark liquid wave in a warrior stance — hold as a lookbook frame.
  Use <Picture 1>, <Picture 2>, <Picture 3> as reference images.

• Fisheye product commercial

  Single reference image · Adapted from Comfy Org day-0 examples

  Vibrant fisheye product commercial, hyper-saturated summer light. The woman from <Picture 1> in a yellow raincoat crouched by a jungle waterfall holding a rainbow-gradient soda can toward the lens.
  MUSIC: upbeat tropical house — punchy kick, steel-drum plucks, warm bass.
  CUT 1: fisheye hero frame; giant typography stamps "STAY" then "HYDRATED" behind her on the beat.
  TRANSITION: extreme close-up of the tab — click-hiss — iris shutters to black.
  CUT 2: iris reopens; she dumps the liquid, rainbow refraction through the stream.
  CUT 3: rainbow can floating in the turquoise pool; "STAY COMFY" as a water reflection. Hold product hero frame.

• Text-only rainy alley (no refs)

  Text-to-video · Spacebunny original starter prompt

  Photoreal night alley in Osaka, light rain, neon reflections on wet asphalt. A courier in a yellow jacket parks a bicycle, checks a phone, then looks up as a train passes overhead. Handheld camera, shallow depth of field, 8 seconds, continuous shot, no cuts. Native stereo: distant train rumble, rain on metal, muffled city murmur. No logos, no readable text on signs.

Where you can run it

• MiniMax / Hailuo product — Hosted product UI. Creators often call the same model Hailuo 3 or H3.
• Hugging Face weights — Official open checkpoints: FL2VA and Ref2VA under the MiniMax H3 Community License.
• fal.ai hosted API — Hosted H3 and H3 Max endpoints with published per-second prices. Spacebunny does not proxy this API.
• ComfyUI — Day-0 templates for T2V, I2V, and R2V. Uses Comfy-Org quantized files, not the raw BF16 HF dump.

Local install detail: MiniMax H3 ComfyUI guide.

Hosted cost estimate

Pure frontend math from fal’s published per-second rates. Local ComfyUI has no API fee.

Questions