2 models · video
LTX API
LTX is a family of AI video models made by Lightricks. varg runs 2 of them on one API key: LTX-2 and LTX-2 Audio-to-Video. Between them they cover text to video, image to video and lip sync; they return video.
- Price
- From $0.05 per run LTX-2 Audio-to-Video
- LTX-2
- From $0.50 per run
- Made by
- Lightricks
- Flagship id
ltx_2_19b_distilled
Every LTX model 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.
curl -X POST https://api.varg.ai/v2/tools/video/call \
-H "Authorization: Bearer $VARG_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "ltx_2_19b_distilled",
"prompt": "abstract paint swirling in water, macro photography",
"files": [
{
"url": "https://s3.varg.ai/u/aa77de6a-1760-4ef1-86de-8f4ca9a6ebb3/tmp_ec7d0203-8f5.png"
}
]
}'LTX models and prices
LTX on varg starts from $0.05 per run (LTX-2 Audio-to-Video). 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.
| Model | Catalog description | Takes | Price | Typical time |
|---|---|---|---|---|
LTX-2ltx_ | Lightricks LTX-2 distilled. | Text to video, Image to video | From $0.50 per run | ~2 min |
LTX-2 Audio-to-Videoltx_ | LTX-2 audio-driven video generation. Create videos driven by audio input. | Lip sync | From $0.05 per run$0.0018/MP | ~2 min |
Call the LTX API
The call below runs LTX-2. For another LTX model, put its id from the table in "model"; the rest of the request keeps its shape.
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.
curl -X POST https://api.varg.ai/v2/tools/video/call \
-H "Authorization: Bearer $VARG_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "ltx_2_19b_distilled",
"prompt": "abstract paint swirling in water, macro photography",
"files": [
{
"url": "https://s3.varg.ai/u/aa77de6a-1760-4ef1-86de-8f4ca9a6ebb3/tmp_ec7d0203-8f5.png"
}
]
}'From Claude, ChatGPT or Cursor (MCP)
The varg MCP server, https://mcp.varg.ai/mcp, runs LTX-2 with call_tool. Sign in with varg, no API key to paste. How to connect it
claude mcp add --transport http varg https://mcp.varg.ai/mcp{
"tool": "video",
"input": {
"model": "ltx_2_19b_distilled",
"prompt": "abstract paint swirling in water, macro photography",
"files": [
{
"url": "https://s3.varg.ai/u/aa77de6a-1760-4ef1-86de-8f4ca9a6ebb3/tmp_ec7d0203-8f5.png"
}
]
},
"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
curl -fsSL https://varg.ai/install | sh
vargai call_tool --tool video '{"model":"ltx_2_19b_distilled","prompt":"abstract paint swirling in water, macro photography","files":[{"url":"https://s3.varg.ai/u/aa77de6a-1760-4ef1-86de-8f4ca9a6ebb3/tmp_ec7d0203-8f5.png"}]}'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 LTX
Step-by-step pages on varg how to.
LTX API: questions
- How much does the LTX API cost on varg?
- The lowest price the catalog states in the LTX family is from $0.05 per run ($0.0018/MP), on LTX-2 Audio-to-Video. 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.
- Which LTX models are on varg?
- 2: LTX-2 (from $0.50 per run) and LTX-2 Audio-to-Video (from $0.05 per run). Each has its own page with the parameters and a call to copy.
- Which LTX models take an image?
- 1 of the 2: LTX-2. The catalog lists image to video for it; pass the image as a URL in "files".
- Which LTX models generate audio?
- 1 of the 2: LTX-2. Set "audio": true in the request and the video comes with a native audio track. The input schemas of the others state no audio switch; each model page says what that model returns.
- How long do LTX requests take?
- Typically about 2 min, by the catalog's estimates for each model's 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 LTX 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": "ltx_2_19b_distilled". 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 LTX 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": "ltx_2_19b_distilled".
More model APIs
Same API key, same request shape: change the model string to switch.
For AI agents: each model above has its full spec as Markdown at varg.ai/models/ltx_2_19b_distilled.md (swap the id), and every model is listed in varg.ai/models/llms.txt.