Does Vidu Q4 take an image?

Yes: the catalog lists image to video for Vidu Q4. Pass the image as a URL in "files".

How long are the clips Vidu Q4 makes?

3 to 16 s per request, by its input schema.

Does Vidu Q4 generate audio?

Yes. Set "audio": true in the request and Vidu Q4 generates the video with a native audio track.

How long do Vidu Q4 requests take?

Typically about 2 min, by the catalog's estimate for its fastest route. The API answers at once with a job id, so nothing waits on an open connection while it runs.

How do I call the Vidu API?

Send POST https://api.varg.ai/v2/tools/video/call with the header "Authorization: Bearer $VARG_API_KEY" and a JSON body that includes "model", for example "model": "vidu_q4". The call answers 202 with a job right away. Poll GET https://api.varg.ai/v2/jobs/{id} until "status" is "completed", then read output.outputs[0].url, or pass options.webhook_url to be called back.

Can I use Vidu from Claude, ChatGPT or Cursor?

Yes. Add the varg MCP server (https://mcp.varg.ai/mcp) to Claude, ChatGPT, Cursor or any other MCP client and sign in with varg, with no API key to paste. The agent runs a model with call_tool, passing tool "video" and the model id, for example "model": "vidu_q4".

1 model · video

Vidu API

Vidu is an AI video model. varg runs it on one API key as Vidu Q4. It covers image to video and text to video; it returns video.

Price: From $0.14 per run
Flagship id: vidu_q4

Vidu Q4 runs on one varg API key and one credit balance, the same as every other model here. You pay the provider's price, with no markup.

POST /v2/tools/video/call

curl -X POST https://api.varg.ai/v2/tools/video/call \
  -H "Authorization: Bearer $VARG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "vidu_q4",
  "prompt": "The woman turns toward the camera and smiles, then the shot cuts to a close-up as she says: \"Let'\''s go.\"",
  "files": [
    {
      "url": "https://storage.googleapis.com/falserverless/web-examples/vidu/stylish_woman.webp"
    }
  ],
  "resolution": "720p",
  "duration": 5
}'

Try Vidu Q4 in the Playground Get an API key

Vidu models and prices

Vidu on varg starts from $0.14 per run (Vidu Q4). Prices are in US dollars and are the provider's own, with no markup. A "from" price is the cheapest request the catalog states for that model; each model's page has every rate and input. The descriptions are the catalog's own, shortened.

Vidu models on varg
Model	Catalog description	Takes	Price	Typical time
Vidu Q4`vidu_q4`	Vidu Q4. Video with native audio from a first frame, or from reference images and voice clips; 3-16 seconds, 540p to 4K. No text-only mode.	Image to video, Text to video	From $0.14 per runfrom $0.045/s	~2 min

Call the Vidu API

The call below runs Vidu Q4.

REST

POST https://api.varg.ai/v2/tools/video/call with Authorization: Bearer $VARG_API_KEY. It answers 202 with a job right away; poll GET /v2/jobs/{id} until its status is completed, then read output.outputs[0].url.

POST /v2/tools/video/call

curl -X POST https://api.varg.ai/v2/tools/video/call \
  -H "Authorization: Bearer $VARG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "vidu_q4",
  "prompt": "The woman turns toward the camera and smiles, then the shot cuts to a close-up as she says: \"Let'\''s go.\"",
  "files": [
    {
      "url": "https://storage.googleapis.com/falserverless/web-examples/vidu/stylish_woman.webp"
    }
  ],
  "resolution": "720p",
  "duration": 5
}'

From Claude, ChatGPT or Cursor (MCP)

The varg MCP server, https://mcp.varg.ai/mcp, runs Vidu Q4 with call_tool. Sign in with varg, no API key to paste. How to connect it

Claude Code

claude mcp add --transport http varg https://mcp.varg.ai/mcp

call_tool

{
  "tool": "video",
  "input": {
    "model": "vidu_q4",
    "prompt": "The woman turns toward the camera and smiles, then the shot cuts to a close-up as she says: \"Let's go.\"",
    "files": [
      {
        "url": "https://storage.googleapis.com/falserverless/web-examples/vidu/stylish_woman.webp"
      }
    ],
    "resolution": "720p",
    "duration": 5
  },
  "wait": true
}

From a terminal (CLI)

vargai is the varg command line: every tool of the MCP server is a command. Install and log in

vargai

curl -fsSL https://varg.ai/install | sh
vargai call_tool --tool video '{"model":"vidu_q4","prompt":"The woman turns toward the camera and smiles, then the shot cuts to a close-up as she says: \"Let'\''s go.\"","files":[{"url":"https://storage.googleapis.com/falserverless/web-examples/vidu/stylish_woman.webp"}],"resolution":"720p","duration":5}'

How billing works

Every model is billed at its provider's price with no markup, from one credit balance: 1 credit is $0.01. varg's fee is on the top-up, not on the run: 5.5% of the credits you buy ($0.80 at the least), or 8% for a team workspace. Pricing

How to use Vidu

Step-by-step pages on varg how to.

Vidu API: questions

How much does the Vidu API cost on varg?: Vidu Q4 costs from $0.14 per run on varg (from $0.045/s on the cheapest route). Every model is billed at its provider's price with no markup, from one credit balance: 1 credit is $0.01. For the exact price of a request before you run it, send the same body to POST https://api.varg.ai/v2/estimate.
Does Vidu Q4 take an image?: Yes: the catalog lists image to video for Vidu Q4. Pass the image as a URL in "files".
How long are the clips Vidu Q4 makes?: 3 to 16 s per request, by its input schema.
Does Vidu Q4 generate audio?: Yes. Set "audio": true in the request and Vidu Q4 generates the video with a native audio track.
How long do Vidu Q4 requests take?: Typically about 2 min, by the catalog's estimate for its fastest route. The API answers at once with a job id, so nothing waits on an open connection while it runs.
How do I call the Vidu API?: Send POST https://api.varg.ai/v2/tools/video/call with the header "Authorization: Bearer $VARG_API_KEY" and a JSON body that includes "model", for example "model": "vidu_q4". The call answers 202 with a job right away. Poll GET https://api.varg.ai/v2/jobs/{id} until "status" is "completed", then read output.outputs[0].url, or pass options.webhook_url to be called back.
Can I use Vidu from Claude, ChatGPT or Cursor?: Yes. Add the varg MCP server (https://mcp.varg.ai/mcp) to Claude, ChatGPT, Cursor or any other MCP client and sign in with varg, with no API key to paste. The agent runs a model with call_tool, passing tool "video" and the model id, for example "model": "vidu_q4".

More model APIs

Same API key, same request shape: change the model string to switch.

All models

For AI agents: each model above has its full spec as Markdown at varg.ai/models/vidu_q4.md (swap the id), and every model is listed in varg.ai/models/llms.txt.