LTX-2.5 — Text to video fast API

← LTX-2.5 Endpoint: POST https://api.higgsfield.ai/lightricks/ltx-2.5/text-to-video/fast Endpoint ID: lightricks/ltx-2.5/text-to-video/fast ▶Open API PlaygroundLTX-2.5 · Text to video fast↗

Usage notes

duration is marked required in the schema and has default 6; the API applies this top-level default before validation. The example includes it explicitly.
Fast supports 720p, 1080p, 2k or 4k and 24, 25, 48 or 50 fps.

Quick start

curl --request POST \
  --url https://api.higgsfield.ai/lightricks/ltx-2.5/text-to-video/fast \
  --header "Authorization: Key ${HF_API_KEY_ID}:${HF_API_KEY_SECRET}" \
  --header "Content-Type: application/json" \
  --data '{
  "prompt": "A cinematic wide shot of ocean waves at sunset, with gentle camera movement.",
  "duration": 6
}'

import higgsfield_client

arguments = (
    {'prompt': 'A cinematic wide shot of ocean waves at sunset, with gentle camera '
               'movement.',
     'duration': 6}
)
result = higgsfield_client.subscribe(
    "lightricks/ltx-2.5/text-to-video/fast",
    arguments=arguments,
)
print(result["video"]["url"])

import { config, higgsfield } from "@higgsfield/client/v2";

config({ credentials: process.env.HF_CREDENTIALS });

const result = await higgsfield.subscribe("lightricks/ltx-2.5/text-to-video/fast", {
  input:
    {
      "prompt": "A cinematic wide shot of ocean waves at sunset, with gentle camera movement.",
      "duration": 6
    },
  withPolling: true,
});

if (result.status === "completed") {
  console.log(result.video?.url);
}

Input schema

integer

default:"25"

Allowed values: 24, 25, 48, 50.

string

required

Write your prompt here Minimum characters: 2. Maximum characters: 5000.

integer

default:"6"

required

Requested output duration in seconds. Allowed values: 6, 8, 10. The server supplies this default when the field is omitted.

string

default:"720p"

Output resolution tier. Allowed values: "720p", "1080p", "2k", "4k".

string

default:"16:9"

Output width-to-height ratio. Allowed values: "16:9", "9:16".

boolean

default:"true"

Generate audio with the video.

string

Allowed values: "dolly_in", "dolly_out", "dolly_left", "dolly_right", "jib_up", "jib_down", "static", "focus_shift".

Complete JSON schema

{
  "type": "object",
  "title": "LTX-2.5 Fast Text to Video Playground",
  "required": [
    "prompt",
    "duration"
  ],
  "properties": {
    "fps": {
      "enum": [
        24,
        25,
        48,
        50
      ],
      "type": "integer",
      "title": "Frames per second",
      "default": 25
    },
    "prompt": {
      "type": "string",
      "title": "Prompt",
      "maxLength": 5000,
      "minLength": 2,
      "description": "Write your prompt here"
    },
    "duration": {
      "enum": [
        6,
        8,
        10
      ],
      "type": "integer",
      "title": "Duration",
      "default": 6
    },
    "resolution": {
      "enum": [
        "720p",
        "1080p",
        "2k",
        "4k"
      ],
      "type": "string",
      "title": "Resolution",
      "default": "720p"
    },
    "aspect_ratio": {
      "enum": [
        "16:9",
        "9:16"
      ],
      "type": "string",
      "title": "Aspect ratio",
      "default": "16:9"
    },
    "generate_audio": {
      "type": "boolean",
      "title": "Generate audio",
      "default": true
    },
    "camera_movement": {
      "enum": [
        "dolly_in",
        "dolly_out",
        "dolly_left",
        "dolly_right",
        "jib_up",
        "jib_down",
        "static",
        "focus_shift"
      ],
      "type": "string",
      "title": "Camera movement"
    }
  },
  "additionalProperties": false
}

Response

Submission returns a request handle. Poll status_url until status is completed, or use webhooks.

Accepted

{
  "status": "queued",
  "request_id": "REQUEST_ID",
  "status_url": "https://api.higgsfield.ai/requests/REQUEST_ID/status",
  "cancel_url": "https://api.higgsfield.ai/requests/REQUEST_ID/cancel"
}

A completed response includes the following output fields:

{
  "status": "completed",
  "request_id": "REQUEST_ID",
  "video": {
    "url": "https://example.com/output.mp4"
  }
}

See polling, request errors and authentication for shared request handling.

Get started

Model API reference

Core concepts

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API reference

Resources

LTX-2.5 — Text to video fast API

Usage notes

Quick start

Input schema

Response

​Usage notes

​Quick start

​Input schema

​Response

Usage notes

Quick start

Input schema

Response