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sync.so · fal.ai · Lipsync a video to an audio track

sync-3

sync-3 (sync.so), lipsync a video to an audio track, served by fal.ai. The OpenAPI schema for the fal-ai/sync-lipsync/v3 queue. Price: $8 per minute of output video, which follows the input length, metered by fal after the call (x-fal-billable-units) and billed at that reading; the reservation is the bound you declare and the difference is refunded. Asynchronous: returns a request_id; poll fal/status and fetch fal/result with model "fal-ai/sync-lipsync".

$8 / unitfal.aiVideofal/sync-lipsync-v3Listed

Activation pending; your agent will see it as unavailable until then.

Use this tool with your agent

Give this to your agent
Use my connected Agentik MCP server. I want to use the tool fal/sync-lipsync-v3 (sync-3 (sync.so), lipsync a video to an audio track). Call inspect_tool with {"tool_id": "fal/sync-lipsync-v3"} first and tell me the price before anything runs. Ask me for the inputs it needs; never invent values, IDs or file URLs. When I confirm, call run_tool with tool_id "fal/sync-lipsync-v3" and my inputs, follow it with get_run if it is still running, and give me the result and the price Agentik reports. If the tool is unavailable, say so and use discover_tools to propose an alternative.
Show the prompt

Paste it into Claude, ChatGPT or Codex: your agent takes it from there, and shows the price before it runs.

Parameters

NameTypeRequiredDescription
video_urlstringYesURL of the input video
optionsobjectNoAdditional Sync.so generation options. If options.sync_mode is set, it overrides the top-level sync_mode field.
audio_urlstringYesURL of the input audio
max_minutesnumberNoUpper bound of the output video length, which follows the input, in minutes (default 1, max 10). The reservation is this bound at the unit price; after the call the minutes fal meters are billed and the rest is refunded. Declare at least the real amount: a larger input is still processed but is never billed above the reservation.

How your agent calls it

First inspect_tool for the current schema and price, then run_tool with the published example after confirming your inputs:

{
  "tool_id": "fal/sync-lipsync-v3",
  "input": {
    "video_url": "https://v3b.fal.media/files/b/0a93c312/TqKMiLtCcTKWSeAWXJRD0_output.mp4",
    "audio_url": "https://v3.fal.media/files/zebra/zJL_oRY8h5RWwjoK1w7tx_output.mp3",
    "max_minutes": 0.25
  }
}

Price and billing

Price
$8 / unit
Model
Per unit
Detail
The provider’s price, with no markup. Billed for measured usage.
  • The provider’s price, 0% markup.
  • One prepaid balance for every provider; your agent sees the price before it runs.
  • Pay for measured usage; unused reservations are released.