MMAudio · sound-effects model

MMAudio V2

Name: MMAudio V2
Brand: MMAudio
SKU: hkchengrex/mmaudio-v2
Price: 0.002 USD
Availability: InStock

MMAudio V2 is a sound-effects model on the Overblast AI Gateway. Call it as hkchengrex/mmaudio-v2 with one Overblast API key, paid from your AI credits.

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Prices are final: what a call costs in AI credits, in US dollars. As of 2 October 2026, from the live catalogue.

Price

MMAudio V2: price
Price	$0.002 / second
One call	$0.01 to $0.06, by the length asked for
Least a call costs	$0.01

What it does

MMAudio V2: what it does
Does	Makes a sound effect from a prompt, Adds synced sound to a video you send
Audio formats	flac
Length	1 to 30 seconds, 8 when not asked
Leave out	Takes a negative prompt
Video	Adds sound to a video up to 30 seconds, and answers with the video
Seed	Takes a seed, for repeatable results

Where it runs

MMAudio V2: where it runs
Regions	Runs globally; it cannot be pinned to the EU or the US yet
Zero data retention	Not applicable: sound-effects calls cannot carry the requirement
Endpoint	`POST /v1/audio/sound-effects`

Call it

curl https://ai.overblast.app/v1/audio/sound-effects \
  -H "Authorization: Bearer $OVERBLAST_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "hkchengrex/mmaudio-v2",
    "prompt": "A heavy wooden door creaking open"
  }' \
  --output sound.mp3

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