APIMART Growth evidence. Kling Video O1 facts were checked on 2026-09-02. CTA links are attributed to this exact GitHub guide.
Kling Video O1 API Limits: Resolution, Inputs and Request Boundaries
APIMART serves Kling Video O1 through POST /v1/videos/generations. The current documentation describes an asynchronous submit-and-poll workflow. The boundaries below were checked on September 2, 2026.
Verified boundaries
- Use the exact model ID kling-video-o1 through the asynchronous video endpoint.
- Standard mode produces 720P and Pro mode 1080P; generation duration is 5 or 10 seconds.
- Supported output aspect ratios are 16:9, 9:16 and 1:1.
- The request accepts up to two public image URLs and references them in the prompt with <<<image_1>>> and <<<image_2>>>.
- A video_list accepts at most one base or feature reference video; supported files are MP4/MOV, 3 seconds minimum, 720–2160 pixels, 24–60 fps and up to 200MB.
- For a base reference video, first/last frames cannot be defined and generated duration follows the uploaded video.
Minimal integration rule
Send the documented model ID, required prompt and only compatible optional inputs. Persist the returned task_id, implement bounded polling and backoff, and keep 400, 401, 402, 429 and 5xx responses out of completed-output metrics.
FAQ
Which endpoint serves Kling Video O1?
Use POST /v1/videos/generations with the documented model ID and Bearer authentication.
Is processing synchronous?
No. A successful submission returns a task ID that must be polled for completion.
What is the first production safeguard?
Validate model ID, quantity or duration, resolution and input combinations before submission.
Can documented limits change?
Yes. Treat the live endpoint documentation as the source of truth and version your request profile.
Should a submitted task be counted as completed output?
No. Count success only after the task endpoint reports a completed result.
Try Kling Video O1 on APIMART
Open the attributed model page or review current APIMART pricing.
Sources and disclosure
Technical source: APIMART endpoint documentation, checked September 2, 2026. APIMART operates the gateway; limits may change.
APIMART links for this guide
Machine-readable schema source
The eventual APIMART CMS page should emit these JSON-LD objects.
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"mainEntityOfPage": "https://apimart.ai/blog/kling-video-o1-api-limits-resolution-inputs",
"dateModified": "2026-09-02",
"author": {
"@type": "Organization",
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}
},
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [
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{
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