LTX 2.5 Pro Serverless API
Generate 1080p video with native audio and multi-shot scenes.
POST /v2/ltx-2.5-pro · submit + poll 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3from segmind import SegmindClient, InferenceFailed, InferenceTimeout
4
5# Async (v2) — recommended for long-running / video models.
6# run() blocks up to 600s; submit_async + job.wait(timeout=...) sets a longer
7# deadline and keeps the request_id so you can re-poll later.
8client = SegmindClient() # reads SEGMIND_API_KEY
9payload = {
10 "prompt": "The waterfall thunders down the mossy cliffs, churning the turquoise pool below as mist swirls through golden sunbeams; tropical birds glide across the frame while the camera slowly drifts in. Ambient rainforest sounds of rushing water, distant birdsong and gentle wind.",
11 "aspect_ratio": "16:9",
12 "resolution": "1080p",
13 "duration": 6,
14 "fps": 24,
15 "generate_audio": True,
16 "camera_motion": "auto",
17}
18job = client.submit_async("ltx-2.5-pro", **payload)
19print(job.request_id) # available immediately
20try:
21 result = job.wait(timeout=900, interval=2.0)
22 print(result["status"]) # COMPLETED
23 print(result.get("output")) # model output (e.g. video URL)
24except InferenceTimeout as e:
25 print("still running:", e.request_id) # re-poll later with this id
26except InferenceFailed as e:
27 print("failed:", e.detail)
28
29# Fast models (<=600s) can use the one-liner instead:
30# result = segmind.run("ltx-2.5-pro", **payload) 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3from segmind import SegmindClient, InferenceFailed, InferenceTimeout
4
5# Async (v2) — recommended for long-running / video models.
6# run() blocks up to 600s; submit_async + job.wait(timeout=...) sets a longer
7# deadline and keeps the request_id so you can re-poll later.
8client = SegmindClient() # reads SEGMIND_API_KEY
9payload = {
10 "prompt": "The waterfall thunders down the mossy cliffs, churning the turquoise pool below as mist swirls through golden sunbeams; tropical birds glide across the frame while the camera slowly drifts in. Ambient rainforest sounds of rushing water, distant birdsong and gentle wind.",
11 "aspect_ratio": "16:9",
12 "resolution": "1080p",
13 "duration": 6,
14 "fps": 24,
15 "generate_audio": True,
16 "camera_motion": "auto",
17}
18job = client.submit_async("ltx-2.5-pro", **payload)
19print(job.request_id) # available immediately
20try:
21 result = job.wait(timeout=900, interval=2.0)
22 print(result["status"]) # COMPLETED
23 print(result.get("output")) # model output (e.g. video URL)
24except InferenceTimeout as e:
25 print("still running:", e.request_id) # re-poll later with this id
26except InferenceFailed as e:
27 print("failed:", e.detail)
28
29# Fast models (<=600s) can use the one-liner instead:
30# result = segmind.run("ltx-2.5-pro", **payload)API Endpoint
https://api.segmind.com/v1/ltx-2.5-proParameters
promptrequiredstringDescribe scene, action, camera and audio in one flowing paragraph. Add sound cues for native audio.
"The waterfall thunders down the mossy cliffs, churning the turquoise pool below as mist swirls through golden sunbeams; tropical birds glide across the frame while the camera slowly drifts in. Ambient rainforest sounds of rushing water, distant birdsong and gentle wind."aspect_ratiooptionalstringOutput orientation. Use 16:9 for landscape, 9:16 for portrait and social.
"16:9""16:9""9:16"camera_motionoptionalstringForces a camera move. Leave on auto to let the prompt drive it.
"auto""auto""static""dolly_in""dolly_out""dolly_left""dolly_right""jib_up""jib_down""focus_shift"durationoptionalintegerClip length in seconds: 6, 8 or 10. Use 6 for single actions, 10 for sequences.
66810fpsoptionalintegerFrame rate. Choose 24 or 25 for cinematic, 50 for smooth action.
24242550generate_audiooptionalbooleanGenerates a synchronized audio track. Turn off for silent video.
trueimageoptionalstring (uri)Optional first frame; adding it switches to image-to-video. Use a high-resolution JPEG or PNG.
"https://segmind-resources.s3.amazonaws.com/input/ltx-2.5-pro-input-b716084aed.jpg"last_frame_urioptionalstring (uri)Optional closing frame for image-to-video interpolation. Cannot combine with automatic duration.
nullresolutionoptionalstringOutput resolution, 720p or 1080p. Pick 1080p for final delivery, 720p for drafts.
"1080p""720p""1080p"Response Type
Returns: Video
Asynchronous requests (v2)
Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.
- 1
POST /v2/ltx-2.5-proSubmit — returns request_id, status_url, response_url
- 2
GET /v2/requests/{id}/statusPoll — until COMPLETED or FAILED
- 3
GET /v2/requests/{id}Result — final response body
Status states
- A FAILED request is served as HTTP 422 — the body still carries the error detail.
- An unknown or expired request_id returns HTTP 404.
- Results are retained for 1 hour, then expire.
- Content / RAI blocks surface as FAILED, not a separate state.
- Track completion by polling the status endpoint.
Common Error Codes
The API returns standard HTTP status codes. Detailed error messages are provided in the response body.
Bad Request
Invalid parameters or request format
Unauthorized
Missing or invalid API key
Forbidden
Insufficient permissions
Not Found
Model or endpoint not found
Insufficient Credits
Not enough credits to process request
Rate Limited
Too many requests
Server Error
Internal server error
Bad Gateway
Service temporarily unavailable
Timeout
Request timed out