ltx-2.5/text-to-video
ltx-2.5/text-to-video
LTX 2.5 Text-to-Video generates high-fidelity synchronized audio-video content from text prompts, with flexible duration and 720P / 1080P / 2K / 4K output for cinematic videos, social content, ads, and production workflows. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
Examples
Parameters
| Name | Type | Default | Constraints | Description |
|---|---|---|---|---|
| prompt *Prompt | textarea | — | ≤ 5000 chars | The positive prompt for the generation. |
| resolutionResolution | select | 720p | 720p | 1080p | 2k | 4k | Video resolution. |
| aspect_ratioAspect Ratio | select | 16:9 | 16:9 | 9:16 | Aspect ratio of the video. |
| durationDuration | slider | 5 | 5 ~ 20 · step 1 | The duration of the generated media in seconds. |
| seedSeed | number | -1 | step 1 | The random seed to use for the generation. -1 means a random seed will be used. |
Output fields
| Field | Type | Description |
|---|---|---|
| videos | array<string> | Generated videos URLs. |
API
Call this model through one unified REST API. Get a key on the API Keys page.
cURL
# 1) Submit — returns { "task_uuid": "..." }
curl -X POST "https://www.namifusion.com/api/v1/marketplace/run/ltx-2.5/text-to-video" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"input": {
"prompt": "A cinematic drone shot gliding over a misty coastal cliff at sunrise, waves crashing below, a lone lighthouse turning slowly in the distance, soft golden light, realistic details, natural motion, synchronized ambient ocean audio, high production value",
"resolution": "720p",
"aspect_ratio": "16:9",
"duration": 5,
"seed": -1
}
}'
# 2) Poll until status is "completed", then read the output URLs
curl "https://www.namifusion.com/api/v1/marketplace/run/tasks/TASK_UUID" \
-H "Authorization: Bearer YOUR_API_KEY"Python
import time, requests
API_KEY = "YOUR_API_KEY"
HEADERS = {"Authorization": f"Bearer {API_KEY}"}
# 1) Submit
resp = requests.post(
"https://www.namifusion.com/api/v1/marketplace/run/ltx-2.5/text-to-video",
headers=HEADERS,
json={
"input": {
"prompt": "A cinematic drone shot gliding over a misty coastal cliff at sunrise, waves crashing below, a lone lighthouse turning slowly in the distance, soft golden light, realistic details, natural motion, synchronized ambient ocean audio, high production value",
"resolution": "720p",
"aspect_ratio": "16:9",
"duration": 5,
"seed": -1
}
},
)
resp.raise_for_status() # 401/402/429/5xx stop here instead of polling a bad task
task = resp.json()
# 2) Poll until a terminal state (completed / failed / cancelled).
# This model is allowed up to 300s server-side.
deadline = time.time() + 360
while task.get("status") not in ("completed", "failed", "cancelled"):
if time.time() > deadline:
raise TimeoutError(f"still {task.get('status')} — keep the task_uuid and poll later")
time.sleep(3)
poll = requests.get(f"https://www.namifusion.com/api/v1/marketplace/run/tasks/{task['task_uuid']}", headers=HEADERS)
poll.raise_for_status()
task = poll.json()
print(task["status"], task.get("output"))JavaScript
const API_KEY = "YOUR_API_KEY";
const HEADERS = { Authorization: `Bearer ${API_KEY}` };
// 1) Submit
const resp = await fetch("https://www.namifusion.com/api/v1/marketplace/run/ltx-2.5/text-to-video", {
method: "POST",
headers: { ...HEADERS, "Content-Type": "application/json" },
body: JSON.stringify({
"input": {
"prompt": "A cinematic drone shot gliding over a misty coastal cliff at sunrise, waves crashing below, a lone lighthouse turning slowly in the distance, soft golden light, realistic details, natural motion, synchronized ambient ocean audio, high production value",
"resolution": "720p",
"aspect_ratio": "16:9",
"duration": 5,
"seed": -1
}
}),
});
if (!resp.ok) throw new Error(`submit failed: ${resp.status} ${await resp.text()}`);
let task = await resp.json();
// 2) Poll until a terminal state (completed / failed / cancelled).
// This model is allowed up to 300s server-side.
const deadline = Date.now() + 360 * 1000;
while (!["completed", "failed", "cancelled"].includes(task.status)) {
if (Date.now() > deadline) throw new Error(`still ${task.status} — keep the task_uuid and poll later`);
await new Promise((r) => setTimeout(r, 3000));
const poll = await fetch(`https://www.namifusion.com/api/v1/marketplace/run/tasks/${task.task_uuid}`, { headers: HEADERS });
if (!poll.ok) throw new Error(`poll failed: ${poll.status}`);
task = await poll.json();
}
console.log(task.status, task.output);Documentation
ltx-2.5/text-to-video
Generate video with synchronized audio. Duration: integer 5–20 seconds. Resolution: 720p, 1080p, 2k or 4k. Defaults: 720p, 5 seconds, seed -1 (random). Aspect ratio: 16:9 (default) or 9:16.
Pricing
| Resolution | USD / second | Credits / second |
|---|---|---|
| 720p | $0.10 | 10 |
| 1080p | $0.14 | 14 |
| 2k | $0.21 | 21 |
| 4k | $0.33 | 33 |
Default 720p × 5 s = $0.50 = 50 credits.
WaveSpeed standard list price; USD 1 = 100 credits. Any account-specific discounts are applied separately.
API
curl -X POST 'https://www.namifusion.com/api/v1/marketplace/run/ltx-2.5/text-to-video' \
-H "Authorization: Bearer $API_KEY" \
-H 'Content-Type: application/json' \
-d '{
"input": {
"prompt": "A cinematic drone shot gliding over a misty coastal cliff at sunrise, waves crashing below, a lone lighthouse turning slowly in the distance, soft golden light, realistic details, natural motion, synchronized ambient ocean audio, high production value",
"resolution": "720p",
"aspect_ratio": "16:9",
"duration": 5,
"seed": -1
}
}'
curl 'https://www.namifusion.com/api/v1/marketplace/run/tasks/TASK_UUID' \
-H "Authorization: Bearer $API_KEY"
The submit response contains task_uuid. Poll until completed or failed. Completed output uses output.videos (URL array).
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