# LTX 2.3 22B API

> Gineadh reference-video le LoRAs gnàthaichte air an cur an sàs tron liosta `loras` riatanach

A’ cleachdadh `video_url` iomraidh agus `prompt`, còmhla ri liosta `loras` riatanach de LoRAs gnàthaichte. Bidh `audio_url` roghainneil a’ sgrìobhadh thairis air an t-slighe-fuaim, agus bidh `image_url` agus `end_image_url` a’ suidheachadh a’ chiad agus an fhrèam mu dheireadh. Bidh an fhaid a’ leantainn a’ bhidio iomraidh nuair a tha `match_video_length` air, no `num_frames` (9 gu 481) air dhòigh eile.

- Model id: `ltx-2.3-22b/reference-video-to-video/lora`
- Made by: Lightricks
- Category: Video to Video
- Output: video
- Price per megapixel of your output video: $0.00181 / megapixel of output video (cheapest run $0.002 (2 API credits))
- Run: `POST https://api.doitong.ru/v1/run/ltx-2.3-22b/reference-video-to-video/lora`
- Quote: `POST https://api.doitong.ru/v1/quote/ltx-2.3-22b/reference-video-to-video/lora`
- Docs page: https://doitong.com/gd/developers/models/ltx-2.3-22b/reference-video-to-video/lora

## Pricing

Price: **$0.00181 / megapixel of output video**. Price per megapixel of your output video: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

The full example input below costs $0.51 = 510 API credits (282 MP output video × $0.001805).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.ru/v1/quote/ltx-2.3-22b/reference-video-to-video/lora` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  |  | Prompt a chaidh a chleachdadh mar bhunait airson gineadh bhidio. |
| `video_url` | `video` | string (video URL) | yes |  |  | URL a chomharraicheas am bhidio iomraidh. |
| `audio_url` | `audio` | string (audio URL) \| null | no |  |  | URL claisneachd roghainneil a bheir seachad slighe claisneachd a’ bhidio. Ma thèid fhàgail às, thèid claisneachd bhidio an tùsail a chleachdadh ma tha i ann. |
| `image_url` | `image` | string (image URL) \| null | no |  |  | URL ìomhaighe roghainneil a mhìnicheas frèam fosglaidh a’ bhidio. |
| `end_image_url` | `end_image` | string (image URL) \| null | no |  |  | URL ìomhaighe a mhìnicheas frèam crìochnachaidh a’ bhidio. |
| `match_video_length` |  | boolean | no | `true` |  | Modh taghaidh àireamh nam frèaman: cleachdaidh ciorramach `num_frames`, agus obraichidh comas àireamh a-mach a’ cleachdadh FPS agus fad a’ bhidio. |
| `num_frames` |  | integer | no | `121` | 9 – 481 | Àireamh fhrèamaichean airson an às-chuir a chaidh a chruthachadh. |
| `video_size` |  | object {width, height} \| enum (string) | no | `auto` | `auto`, `square_hd`, `square`, `portrait_4_3`, `portrait_16_9`, `landscape_4_3`, `landscape_16_9` | Meudan a’ bhidio a chaidh a ghineadh. |
| `generate_audio` |  | boolean | no | `true` |  | A’ cumail smachd air a bheil claisneachd gineadh anns a’ bhidio. |
| `use_multiscale` |  | boolean | no | `true` |  | Toglaich gineadh ioma-sgèile airson co-leanailteachd agus mion-fhiosrachadh nas fheàrr. Le True, bidh bhidio tòiseachaidh nas lugha a’ stiùireadh dàrna gineadh aig a bheil meud co-ionann no nas motha na na tomhasan a chaidh iarraidh. |
| `match_input_fps` |  | boolean | no | `true` |  | Tar-sgrìobhadh ìre-frèam an às-chuir a chuireas FPS bhidio an tùsail an àite an FPS targaid bun-roghainn nuair a tha e an comas. |
| `fps` |  | number | no | `24` | 1 – 60 | Ìre frèam bhidio an às-chuir, air a tomhas ann am frèaman san diog. |
| `num_inference_steps` |  | integer | no | `40` | 8 – 50 | Àireamh nan ceumannan inference a chaidh a choileanadh. |
| `video_cfg_scale` |  | number | no | `3` | 1 – 20 | Suidheachadh stiùiridh bhidio: àrdaich e airson barrachd co-sheasmhachd agus fòcas san t-susbaint a chaidh a ghineadh. A’ cleachdadh classifier-free guidance (CFG). |
| `video_stg_scale` |  | number | no | `0` | 0 – 20 | Smachd air co-sheasmhachd agus fòcas a’ bhidio tro sgèile Spatiotemporal Guidance (STG); àrdaich an suidheachadh gus an dà chuid a neartachadh. |
| `video_rescaling_scale` |  | number | no | `0.7` | 0 – 1 | Atharrachadh ath-sgèileachaidh bhidio airson classifier-free agus stiùireadh spatiotemporal a chothromachadh mar cho-mheas. |
| `video_modality_scale` |  | number | no | `3` | 0 – 10 | Atharrachadh modhalachd bhidio airson tabhartasan a’ bhidio agus na claisneachd a chothromachadh mar cho-mheas. |
| `audio_cfg_scale` |  | number | no | `7` | 1 – 20 | Suidheachadh stiùiridh claisneachd: àrdaich e airson barrachd co-sheasmhachd agus fòcas san t-susbaint a chaidh a ghineadh. A’ cleachdadh classifier-free guidance (CFG). |
| `audio_stg_scale` |  | number | no | `0` | 0 – 20 | Smachd air co-sheasmhachd agus fòcas na claisneachd tro sgèile Spatiotemporal Guidance (STG); àrdaich an suidheachadh gus an dà chuid a neartachadh. |
| `audio_rescaling_scale` |  | number | no | `0.7` | 0 – 1 | Atharrachadh ath-sgèileachaidh claisneachd airson classifier-free agus stiùireadh spatiotemporal a chothromachadh mar cho-mheas. |
| `audio_modality_scale` |  | number | no | `3` | 0 – 10 | Atharrachadh modhalachd claisneachd airson tabhartasan a’ bhidio agus na claisneachd a chothromachadh mar cho-mheas. |
| `gradient_estimation_gamma` |  | number | no | `2` | 0 – 10 | Suidheachadh tuairmseachaidh caisead dì-fhuaimneachaidh: bidh 0 a’ cur an tuairmseachadh dheth; air neo, sònraichidh an luach gamma. |
| `use_restart_sampling` |  | boolean | no | `false` |  | Toglaich samplachadh ath-thòiseachaidh airson càileachd bhidio a dh’fhaodadh a bhith nas fheàrr: le bhith ga chur an comas, thèid beagan fuaim a chur ris aig gach ceum dì-fhuaimneachaidh. |
| `scheduler` |  | enum (string) | no | `ltx2` | `ltx2`, `linear_quadratic`, `beta` | Taghadh scheduler. |
| `acceleration` |  | enum (string) | no | `regular` | `none`, `regular`, `high`, `full` | Ìre luathachaidh air a cur an sàs ann an giullachd. |
| `camera_lora` |  | enum (string) | no | `none` | `dolly_in`, `dolly_out`, `dolly_left`, `dolly_right`, `jib_up`, `jib_down`, `static`, `none` | Taghadh Camera LoRA airson smachd nas mionaidiche air gluasad sa bhidio a chaidh a ghineadh na tha comasach le promptan gluasad-camara leotha fhèin. |
| `camera_lora_scale` |  | number | no | `1` | 0 – 1 | Neart Camera LoRA airson smachd nas mionaidiche air gluasad sa bhidio a chaidh a ghineadh na tha comasach le promptan gluasad-camara leotha fhèin. |
| `negative_prompt` |  | string | no | `news broadcast, 3d animation, computer graphics, pc game, console game, video game, cartoon, childish, watermark, logo, text, on screen text, subtitles, titles, signature, slowmo, static` |  | Prompt àicheil a thèid a chleachdadh rè gineadh bhidio. |
| `seed` |  | integer \| null | no |  |  | Luach sìl a thòisicheas gineadh àireamhan air thuaiream. |
| `enable_prompt_expansion` |  | boolean | no | `true` |  | Smachd air a bheil leudachadh a’ phrompt air a chomasachadh. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Smachd air co-dhiù a bheil sgrùdadh sàbhailteachd air a chomasachadh. |
| `video_output_type` |  | enum (string) | no | `X264 (.mp4)` | `X264 (.mp4)`, `VP9 (.webm)`, `PRORES4444 (.mov)`, `GIF (.gif)` | Seòrsa às-chuir airson a’ bhidio a thig às. |
| `video_quality` |  | enum (string) | no | `high` | `low`, `medium`, `high`, `maximum` | Ìre càileachd airson a’ bhidio a thig às. |
| `video_write_mode` |  | enum (string) | no | `balanced` | `fast`, `balanced`, `small` | Modh sgrìobhaidh airson a’ bhidio a thig às. |
| `loras` |  | array of object {path, weight_name, scale} | yes |  |  | Taghadh LoRA airson gineadh. |
| `loras[].path` |  | string | yes |  |  | Àite cuideaman LoRA, air a thoirt seachad mar URL no ID stòrais HuggingFace ann an cruth owner/repo. |
| `loras[].weight_name` |  | string \| null | no |  |  | Ainm cuideim LoRA airson taghadh am measg iomadh cuideim ann an stòras HuggingFace; chan eil feum air ach airson stòran anns a bheil iomadh cuideam. Chan eil buaidh aig an t-suidheachadh seo mura comharraich `path` stòras HuggingFace. |
| `loras[].scale` |  | number | no | `1` | 0 – 4 | Factar sgèileachaidh a chuirear an sàs anns an LoRA, eadar 0.0 agus 4.0. |
| `distill_lora_first_pass_scale` |  | number | no | `0.2` | 0 – 1 | Smachd air sgèileadh distill LoRA a’ chiad phas, a’ cleachdadh 0 airson a chur dheth. |
| `distill_lora_second_pass_scale` |  | number | no | `0.5` | 0 – 1 | Smachd air sgèileadh distill LoRA airson gach pas às dèidh a’ chiad phas. |
| `video_strength` |  | number | no | `1` | 0 – 1 | Tha saorsa atharrachadh susbaint a’ bhidio fo smachd an neirt conditionachaidh seo: leigidh suidheachaidhean nas lugha barrachd saorsa leis a’ mhodail. |
| `audio_strength` |  | number | no | `1` | 0 – 1 | Tha saorsa atharrachadh susbaint na claisneachd fo smachd an neirt conditionachaidh seo: leigidh suidheachaidhean nas lugha barrachd saorsa leis a’ mhodail. |
| `preprocessor` |  | enum (string) | no | `none` | `depth`, `canny`, `pose`, `none` | Ro-phròiseasar air a chur an sàs rè gineadh. |
| `ic_lora_type` |  | enum (string) | no | `union` | `match_preprocessor`, `union`, `detailer`, `none` | Atharrachadh IC LoRA air a chur an sàs rè gineadh. |

File parameters (`video`, `audio`, `image`, `end_image`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "loras": [
    {
      "path": "https://example.com/your-file.safetensors"
    }
  ],
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
}
```

A fuller example:

```json
{
  "loras": [
    {
      "path": "https://example.com/your-file.safetensors"
    }
  ],
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/ltx-2.3-22b/reference-video-to-video/lora?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "loras": [
      {
        "path": "https://example.com/your-file.safetensors"
      }
    ],
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.ru/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/ltx-2.3-22b/reference-video-to-video/lora?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "loras": [
      {
        "path": "https://example.com/your-file.safetensors"
      }
    ],
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.ru/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "loras": [
        {
            "path": "https://example.com/your-file.safetensors",
        },
    ],
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/ltx-2.3-22b/reference-video-to-video/lora", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.ru/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "ltx-2.3-22b/reference-video-to-video/lora",
      "input": {
        "loras": [
          {
            "path": "https://example.com/your-file.safetensors"
          }
        ],
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "ltx-2.3-22b/reference-video-to-video/lora",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 510,
    "usd": "0.51",
    "charged": 510,
    "refunded": 0
  },
  "input": {
    "loras": [
      {
        "path": "https://example.com/your-file.safetensors"
      }
    ],
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  },
  "output": {
    "video": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_name": "0-output.mp4",
      "file_size": 1843200,
      "width": 1024,
      "height": 768,
      "fps": 1.0,
      "duration": 5,
      "num_frames": 1
    },
    "seed": 42,
    "prompt": "black-and-white video, a cowboy walks through a dusty town, film grain"
  },
  "outputs": [
    {
      "type": "video",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_size": 1843200,
      "width": 1280,
      "height": 720,
      "duration": 5,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video` | object {url, content_type, file_name, file_size, width, height, fps, duration, num_frames} | Bhidio a rinn am modail. |
| `seed` | integer | Luach seed a thèid a chleachdadh gus gineadh àireamhan air thuaiream a thòiseachadh. |
| `prompt` | string | Prompt a thèid a chleachdadh gus gineadh a stiùireadh. |

## Related models

- [LTX-2.3 22B · Text to Video](https://doitong.com/developers/models/ltx-2.3-22b/text-to-video.md) (`ltx-2.3-22b/text-to-video`): $0.00161 / megapixel of output video
- [LTX-2.3 22B · Text to Video · LoRA](https://doitong.com/developers/models/ltx-2.3-22b/text-to-video/lora.md) (`ltx-2.3-22b/text-to-video/lora`): $0.00181 / megapixel of output video
- [LTX-2.3 22B · Image to Video](https://doitong.com/developers/models/ltx-2.3-22b/image-to-video.md) (`ltx-2.3-22b/image-to-video`): $0.00161 / megapixel of output video
- [LTX-2.3 22B · Image to Video · LoRA](https://doitong.com/developers/models/ltx-2.3-22b/image-to-video/lora.md) (`ltx-2.3-22b/image-to-video/lora`): $0.00181 / megapixel of output video
- [LTX-2.3 22B · Extend Video](https://doitong.com/developers/models/ltx-2.3-22b/extend-video.md) (`ltx-2.3-22b/extend-video`): $0.00161 / megapixel of output video
- [LTX-2.3 22B · Extend Video · LoRA](https://doitong.com/developers/models/ltx-2.3-22b/extend-video/lora.md) (`ltx-2.3-22b/extend-video/lora`): $0.00181 / megapixel of output video
- [LTX-2.3 22B · Reference Video to Video](https://doitong.com/developers/models/ltx-2.3-22b/reference-video-to-video.md) (`ltx-2.3-22b/reference-video-to-video`): $0.00161 / megapixel of output video
- [LTX-2.3 22B · Video to Video](https://doitong.com/developers/models/ltx-2.3-22b/video-to-video.md) (`ltx-2.3-22b/video-to-video`): $0.00161 / megapixel of output video

## Links

- HTML page: https://doitong.com/developers/models/ltx-2.3-22b/reference-video-to-video/lora
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=ltx-2.3-22b/reference-video-to-video/lora
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/ltx-2.3-22b/reference-video-to-video/lora