Video

LTX 2.5 Fast (Text to Video)

Credit-based pricing. Supports audio generation.

Try LTX 2.5 Fast (Text to Video) →Compare models

Output

video

Aspect ratio

16:9, 9:16

Resolution

720p, 1080p, 1440p, 2160p

Duration

6s, 8s, 10s, 12s, 14s, 16s, 18s, 20s

Inputs

Generates audio

Example prompt

An arctic research rover crosses a blue glacier beneath the aurora, snow blowing past the lens, wide tracking shot, crisp wind and distant mechanical hum

Try this prompt →

LLM-ready

API & LLM schema

Exact request contract for this model. Agents can fetch it from /api/v1/models?id=lightricks/ltx-2.5/text-to-video/fast.

POST/api/v1/generate13 fields · 2 required

Field	Type	Requirement	Contract
`model_id`	constant	Required	ArtEmotion model identifier.
`extra`	object	Optional	Model-specific settings may also be nested here.
`max_credits`	number	Optional	Reject before submission if the estimated list price exceeds this cap. · Range: 1–…
`webhook_url`	string	Optional	Format: uri
`webhook_secret`	string	Optional	Optional model input.
`folder_id`	string	Optional	Optional model input.
`prompt`	string	Required	Optional model input.
`duration`	number	Optional	Allowed: 6, 8, 10, 12, 14, 16, 18, 20
`resolution`	string	Optional	Allowed: 720p, 1080p, 1440p, 2160p
`aspect_ratio`	string	Optional	Allowed: 16:9, 9:16
`fps`	number	Optional	Output frames per second. · Allowed: 24, 25, 48, 50 · Default: 25
`generate_audio`	boolean	Optional	Generate synchronized native audio with the video. · Default: true
`camera_motion`	string	Optional	Optional camera movement preset. · Allowed: dolly_in, dolly_out, dolly_left, dolly_right, jib_up, jib_down, static, focus_shift

Minimal request example

{
  "model_id": "lightricks/ltx-2.5/text-to-video/fast",
  "prompt": "An arctic research rover crosses a blue glacier beneath the aurora, snow blowing past the lens, wide tracking shot, crisp wind and distant mechanical hum"
}

Raw JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.artemotion.ai/api/v1/models?id=lightricks%2Fltx-2.5%2Ftext-to-video%2Ffast",
  "title": "LTX 2.5 Fast (Text to Video) generation request",
  "description": "Request body accepted by POST /api/v1/generate for lightricks/ltx-2.5/text-to-video/fast.",
  "type": "object",
  "properties": {
    "model_id": {
      "type": "string",
      "const": "lightricks/ltx-2.5/text-to-video/fast",
      "description": "ArtEmotion model identifier."
    },
    "extra": {
      "type": "object",
      "additionalProperties": true,
      "description": "Model-specific settings may also be nested here."
    },
    "max_credits": {
      "type": "number",
      "minimum": 1,
      "description": "Reject before submission if the estimated list price exceeds this cap."
    },
    "webhook_url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2048
    },
    "webhook_secret": {
      "type": "string",
      "maxLength": 512
    },
    "folder_id": {
      "type": "string"
    },
    "prompt": {
      "type": "string"
    },
    "duration": {
      "type": "number",
      "enum": [
        6,
        8,
        10,
        12,
        14,
        16,
        18,
        20
      ]
    },
    "resolution": {
      "type": "string",
      "enum": [
        "720p",
        "1080p",
        "1440p",
        "2160p"
      ]
    },
    "aspect_ratio": {
      "type": "string",
      "enum": [
        "16:9",
        "9:16"
      ]
    },
    "fps": {
      "title": "Frame Rate",
      "description": "Output frames per second.",
      "default": 25,
      "type": "number",
      "enum": [
        24,
        25,
        48,
        50
      ]
    },
    "generate_audio": {
      "title": "Generate Audio",
      "description": "Generate synchronized native audio with the video.",
      "default": true,
      "type": "boolean"
    },
    "camera_motion": {
      "title": "Camera Motion",
      "description": "Optional camera movement preset.",
      "type": "string",
      "enum": [
        "dolly_in",
        "dolly_out",
        "dolly_left",
        "dolly_right",
        "jib_up",
        "jib_down",
        "static",
        "focus_shift"
      ]
    }
  },
  "required": [
    "model_id",
    "prompt"
  ],
  "additionalProperties": false
}

Browse schemas for every ArtEmotion model →

FAQ

How much does LTX 2.5 Fast (Text to Video) cost on ArtEmotion?

Credit-based pricing. You pay in ArtEmotion credits — every plan and top-up converts USD to credits at a fixed rate.

Do I get my credits back if LTX 2.5 Fast (Text to Video) fails?

Yes — failed generations are never charged. The credits are released back to your balance automatically.

Can I call LTX 2.5 Fast (Text to Video) from the API?

Yes. Use POST /api/v1/generate with model_id: "lightricks/ltx-2.5/text-to-video/fast". See the API reference for the full schema.

Where are my generations stored?

Every output is saved to your personal Library. You can export or delete everything any time from Privacy & deletion.

Ready to generate with LTX 2.5 Fast (Text to Video)?

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No commitment. New accounts get 50 free credits on signup. See pricing.