Source: https://ailoot.ai/models/en/kwaivgi-kling-video-o1/
Canonical: https://ailoot.ai/models/en/kwaivgi-kling-video-o1/
Language: en

# Kling: Video O1

[Markdown](https://ailoot.ai/models/en/kwaivgi-kling-video-o1/index.md) · [JSON](https://ailoot.ai/models/en/kwaivgi-kling-video-o1/facts.json)

## [Kling: Video O1](https://ailoot.ai/models/en/kwaivgi-kling-video-o1/)

Kling VIDEO O1 is Kuaishou’s reference-led video model for generating and editing scenes with text, images, subject elements and a source clip. Use its three-to-ten-second generation profile for visual continuity, guided frame transitions and focused changes to existing footage.

- [**Ailoot Ultra · Video** `POST /v1/videos` `kwaivgi/kling-video-o1`](https://ailoot.ai/models/en/kwaivgi-kling-video-o1/#method-0)

About the model

This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below.

Kling VIDEO O1 is Kuaishou’s unified reference-led video model. It combines a text description with images, prepared subject elements or a source video to guide new scenes and focused changes to existing footage. Its core interface is a visual brief: identify the referenced material, describe its role and state the appearance, action or transformation you want in the resulting video.

A new shot can start from text, an opening image or a set of visual references. Use an image to establish a character or object, and describe the setting, action and viewpoint in words. When several references contribute different features, assign their roles explicitly. An original product brief might take the object from one image and the environment from another, then describe the object’s movement within that setting.

O1’s prompt can name images, elements and videos with specific reference markers, such as \<\<\<image\_1\>\>\> or \<\<\<video\_1\>\>\>. Keep those markers associated with the actual supplied asset and explain what should be taken from it. The maker’s prompt allowance is 2,500 characters. A concise instruction that identifies the subject and change is more useful than a collection of unrelated style terms.

For image-based references without a video input, the documented combined budget is up to seven reference images and multi-image elements. With a reference video, that image/element budget is four. These limits are scoped to image-based elements; other element types have separate compatibility rules. Choose the material that supplies the essential appearance or scene information rather than filling the budget with redundant views.

Image inputs use JPG, JPEG or PNG, supplied as an accessible URL or image data, with files up to 10 MB, dimensions of at least 300 pixels and an aspect ratio between 1:2.5 and 2.5:1. Prepare clear subjects and retain important details in the crop. If the task needs a character or product to remain recognisable, state which features should remain and inspect them throughout the completed clip.

Start and end frames condition a transition between visual boundaries. The documented O1 boundary-frame workflow requires a starting frame when an ending frame is supplied, and does not support start/end-frame control with more than two images in the array. When both boundary frames are used, additional subject elements are not part of that O1 configuration. Keep a frame-controlled task separate from editing a supplied base video.

A source video can have two distinct roles. As the base clip, it is the footage being edited: direct a specific addition, removal, style treatment or compositional change while stating what should remain. The edit follows the input clip’s duration and does not combine that base-video task with boundary-frame control or multi-shot generation. As a feature reference, the video supplies content, style or camera information for a new shot.

Reference-video prompting can also request a preceding or following shot. Identify the source clip and describe the new visible event, such as a continuation of the subject’s action or a reveal of the surrounding environment. This uses the reference to communicate visual information; review the join and subject continuity before assembling the new segment with the original footage.

The producer’s video-input profile accepts one MP4 or MOV source, up to 200 MB, with a minimum duration of three seconds. Its detailed input profile specifies dimensions from 720 to 2160 pixels and frame rates from 24 to 60 fps, with an input aspect ratio between 1:2.5 and 2.5:1. That documented source-video workflow returns 24 fps video. The exact allowed clip duration also depends on the selected model profile. O1’s new-generation range is three to ten seconds, distinct from the later 3.0 Omni duration range.

The maker’s O1 modes provide 720p Standard or 1080p Pro output. New-shot framing supports documented landscape, portrait and square choices where the selected workflow uses that control; a base-video edit follows its source framing. Source-video audio can be retained or discarded. O1’s reference and editing workflow should remain separate from the later 3.0 Omni native-audio and custom-storyboard profile.

Generation produces a task whose completed result contains the video artifact and actual duration. The maker’s result documentation says generated videos are deleted after 30 days, so save the completed clip promptly. Preserve the source assets and the brief with that result, then review the requested change, reference use and continuity. For an edit, compare the affected area and the parts that should remain. For a reference-led new shot, check that each asset supplied the intended visual information. Keep the completed clip available for the subsequent edit or production sequence.

**Ailoot Ultra · Video** `POST /v1/videos` `kwaivgi/kling-video-o1`

[`kwaivgi/kling-video-o1`](https://ailoot.ai/models/en/#m=kwaivgi%2Fkling-video-o1&route=Ultra&caller=kwaivgi%2Fkling-video-o1&fmt=videos)

Kuaishou /`kwaivgi/kling-video-o1`

### Overview

Kling VIDEO O1 is Kuaishou’s reference-led video model for generating and editing scenes with text, images, subject elements and a source clip. Use its three-to-ten-second generation profile for visual continuity, guided frame transitions and focused changes to existing footage.

Accepted inputs

Text · Images

Results

Video

### Available in Ailoot · inputs & methods

**Ailoot Ultra · Video** `POST /v1/videos`

Input types

`text`, `image`

Output types

`video`

Output format

original MP4 bytes; no normalization/transcode

| Field | Type | Requirement | Values & limits | Default |
| --- | --- | --- | --- | --- |
| Field`model` | Type`string` | RequirementRequired | Values & limits kwaivgi/kling-video-o1 | Default— |
| Field`prompt` | Type`string` | RequirementRequired | Values & limits | Default— |
| Field`duration` | Type`integer` | RequirementRequired | Values & limits 5, 10 Minimum: 1 Maximum: 600 | Default— |
| Field`resolution` | Type`string` | RequirementOptional | Values & limits 720p | Default— |
| Field`aspect_ratio` | Type`string` | RequirementOptional | Values & limits 16:9, 9:16, 1:1 | Default— |
| Field`generate_audio` | Type`boolean` | RequirementOptional | Values & limits false, true | Default— |
| Field`frame_images` | Type`array` | RequirementOptional | Values & limits Minimum items: 1 Maximum items: 2 Input content: Array of frame objects. Each object has type=image\_url, image\_url containing url, and frame\_type. Use an HTTPS image URL and set frame\_type to first\_frame or last\_frame. Each frame role appears at most once. Exact keys: type, image\_url, frame\_type Conditions: These keys describe each frame object; image\_url contains only url. Omit frame\_images for a text-only request. | Default— |
| Field`input_references` | Type`array` | RequirementOptional | Values & limits | Default— |
| Field`size` | Type`string` | RequirementOptional | Values & limits 1280x720, 720x1280, 720x720 Pattern: ^\[1-9\]\[0-9\]\*x\[1-9\]\[0-9\]\*$ | Default— |
| Field`callback_url` | Type`string` | RequirementOptional | Values & limits Pattern: ^https:// | Default— |
| Field`session_id` | Type`string` | RequirementOptional | Values & limits | Default— |
| Field`trace` | Type`object` | RequirementOptional | Values & limits | Default— |
| Field`user` | Type`string` | RequirementOptional | Values & limits | Default— |

Input material combinations

**Text to video** · A written prompt. · Required: model, prompt, duration

`Provide prompt as text and duration as whole seconds. Choose a supported resolution; add an aspect ratio or use a listed size.`

`model`: Type: string · kwaivgi/kling-video-o1

`prompt`: Type: string · Maximum UTF-8 bytes: 10,000 · Non-whitespace required: Yes

**Image to video** · A written prompt and a first-frame image. · Required: model, prompt, duration, frame\_images

`frame_images is an array. Each frame object has type, image_url and frame_type; image_url contains url. Set type to image_url. Use first_frame with an optional last_frame. Each frame role appears at most once. Supply a public HTTPS image URL for each frame. Choose a supported resolution; add an aspect ratio or use a listed size.`

Exact keys: type, image\_url, frame\_type

`model`: Type: string · kwaivgi/kling-video-o1

`prompt`: Type: string · Maximum UTF-8 bytes: 10,000 · Non-whitespace required: Yes

Method parameters and lifecycle

| Parameter | Contract |
| --- | --- |
| Parameter`content_type` | Contractapplication/json |
| Parameter`required` | Contractmodel, prompt, duration |
| Parameter`material_types` | Contracttext, image |
| Parameter`additional_properties` | Contractfalse |
| Parameter`optional_controls` | Contractresolution, aspect\_ratio, generate\_audio, frame\_images, input\_references, size, callback\_url, session\_id, trace, user |

Lifecycle: `submit_once_poll_original`

`GET /v1/videos/{public_id}`

`GET /v1/videos/{public_id}/content`

### Pricing

##### How the final charge is calculated

The displayed rates estimate the cost before generation. The final charge is calculated from the cost recorded for the original generation. Measured output duration and forecast quantities are not the final billable quantity.

Tariff references do not add request options. Supported parameters are listed for the selected method.

Fast mode

Not specified When fast mode is selected

Flex mode

Not specified When flex mode is selected

Maximum reasoning effort

Not specified When maximum reasoning effort uses the default adjustment

#### Estimated rates for comparison

#### Prices by configuration

Match each charge to the conditions shown. Use one rate for each set of alternative configurations.

| Configuration | Rate schedule | Forecast quantity | Billing unit | Billing conditions | Charge |
| --- | --- | --- | --- | --- | --- |
| ConfigurationBase token rates | Rate scheduleBase rate | Forecast quantity— | Billing unit— | Billing conditions— | Charge Input · Input tokens · Estimate for comparison only **—** / 1K tokens Output · Output tokens · Estimate for comparison only **—** / 1K tokens Input · Cache read · Estimate for comparison only **—** / 1K tokens Input · Cache write · Estimate for comparison only **—** / 1K tokens Input · Cache write, 1 hour · Estimate for comparison only **—** / 1K tokens |
| ConfigurationVideo price | Rate schedule— | Forecast quantity— | Billing unitper video second | Billing conditionsNo additional condition is declared in this pricing key. | Charge Output · Video price · Estimate for comparison only **$0.224** per video second |
| ConfigurationEstimated generation cost | Rate schedule— | Forecast quantityone generation estimate | Billing unit— | Billing conditions— | Charge Output · Estimated generation cost · Estimate for comparison only **$1.12** estimate before generation This estimate is not an additional charge or a fixed rate for the completed generation. |

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/)

#### Reference tariff details

Model-level reference schedules do not change method selection, quotes or charges. Active charges use the selected Ailoot method rates.

Video configuration price references

#### Prices by configuration

| Configuration | Billing conditions | Charge |
| --- | --- | --- |
| ConfigurationVideo price | Billing conditionsNo additional condition is declared in this pricing key. | Charge Output · Video price **$0.224** per video second Published price reference for the configuration shown. Final charges follow the actual billed configuration. |

### Example requests

#### Ailoot Ultra · Video

curl · create video

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
python3 - <<'PY_REQUEST'
from pathlib import Path
Path('request.json').write_text('{"aspect_ratio":"16:9","duration":5,"model":"kwaivgi/kling-video-o1","prompt":"A serene mountain landscape at sunset","resolution":"720p"}', encoding='utf-8')
PY_REQUEST
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/videos \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
python3 - <<'PY_RESULT'
import json
from pathlib import Path
r=json.loads(Path('result.json').read_text())
print(json.dumps(r,ensure_ascii=False,indent=2))
print('Keep the complete JSON and response headers; do not resubmit an unknown creation.')
PY_RESULT
```

### Receive and save results

#### Ailoot Ultra · Video

signed owned content URLs

- `GET /v1/videos/{public_id}`
- `GET /v1/videos/{public_id}/content`

##### Check job status

GET original status

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
python3 - <<'PY_STATUS_URL'
import json
from pathlib import Path
from urllib.parse import quote
r=json.loads(Path('result.json').read_text())
if not isinstance(r.get('id'),str) or not r['id']:raise SystemExit('Keep the original response and headers for reconciliation; no returned ID')
Path('status-url.txt').write_text('https://api.ailoot.ai/v1/videos/'+quote(r['id'],safe=''))
PY_STATUS_URL
curl --fail-with-body --silent --show-error "$(cat status-url.txt)" \
  -H "Authorization: Bearer $AILOOT_API_KEY" -D status-headers.txt -o status.json
python3 - <<'PY_RESULT'
import json
from pathlib import Path
r=json.loads(Path('status.json').read_text())
print(json.dumps(r,ensure_ascii=False,indent=2))
print('Keep the complete JSON and response headers; do not resubmit an unknown creation.')
PY_RESULT
```

Other content reads

Save every completed owned output

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
export AILOOT_API_KEY
python3 - <<'PY_ASSETS'
import json,os,subprocess
from pathlib import Path
from urllib.parse import urljoin,urlsplit
r=json.loads(Path('status.json').read_text())
if r.get('status')!='completed':raise SystemExit('Keep the original ID and read its status; never recreate an unknown job')
if not isinstance(r.get('data'),list) or not r['data']:raise SystemExit('Keep the complete original status; no completed outputs supplied')
urls=[]
for i,u in enumerate(r.get('data',[])):
    if not isinstance(u,str):raise SystemExit('Keep the original response; unexpected asset shape')
    urls.append((str(i),u))
for label,path in urls:
    u=urljoin('https://api.ailoot.ai',path);z=urlsplit(u)
    if z.scheme!='https' or z.netloc!='api.ailoot.ai' or z.username or z.password:raise SystemExit('Use the actual returned Ailoot owned content URL')
    target=Path('owned-'+label+'.bin')
    subprocess.run(['curl','--fail-with-body','--silent','--show-error',u,'-H','Authorization: Bearer '+os.environ['AILOOT_API_KEY'],'-D',str(target)+'.headers','-o',str(target)],check=True)
print('All returned owned URLs saved; complete metadata, timing and usage remain in the JSON.')
PY_ASSETS
```

##### Keep all completed results

Save every completed video or returned file; retrieve every actual returned asset URL.

Keep every actual owned output and its returned measured metadata.

##### If the original response needs checking

503 result\_pending\_check + originalid + X-Should-Retry:false; never replay original

Response fields

| Field | Type | Meaning |
| --- | --- | --- |
| Field`index` | Typeinteger | MeaningZero-based position of this video in the outputs list. |
| Field`content_url` | Typestring | MeaningSigned HTTPS download URL for this completed video. |
| Field`sha256` | Typestring \| null | MeaningSHA-256 digest of the original video bytes; null if unavailable. |
| Field`size_bytes` | Typeinteger \| null | MeaningSize of the original video file in bytes; null if unavailable. |
| Field`duration_ms` | Typeinteger \| null | MeaningMeasured video duration in milliseconds; null if unavailable. |
| Field`width` | Typeinteger \| null | MeaningVideo width in pixels; null if unavailable. |
| Field`height` | Typeinteger \| null | MeaningVideo height in pixels; null if unavailable. |
| Field`video_codec` | Typestring \| null | MeaningVideo codec identifier; null if not recorded. |
| Field`has_audio` | Typeboolean \| null | MeaningWhether the video contains an audio track; null if not measured. |
| Field`audio_codec` | Typestring \| null | MeaningAudio codec identifier; null when no identifier is recorded. |

Errors and next steps

| Response | Condition | Next step |
| --- | --- | --- |
| Response404 · `not_found_error` | ConditionVideo access is unavailable, or this video ID was not found. | Next stepCheck video access. For an existing video, use its original public ID and the same API key. |
| Response401 · `authentication_error` | ConditionThe API key does not match the authenticated account. | Next stepCheck your API key and account access before submitting. |
| Response400 · `invalid_request_error` | ConditionThe request could not be read, or the download index is invalid. | Next stepCorrect the request body. For a download, choose an output index returned by the original task. |
| Response422 · `price_unavailable` | ConditionThe selected video configuration cannot be priced. | Next stepChoose a supported video configuration and complete its required options before submitting a corrected request. |
| Response422 · `invalid_request_error` | ConditionA video input or original continuation task is invalid. | Next stepUse valid HTTPS inputs. For continuation, use your completed original public video ID with the same API key. |
| Response402 · `billing_error` | ConditionThe available balance or limits do not allow a reservation. | Next stepCheck your available balance and limits before sending a new request. |
| Response503 · `server_error` | ConditionVideo verification, storage or service access is temporarily unavailable. | Next stepWait for service availability. If you already have a video ID, check that original task instead of creating another generation. |
| Response503 · `result_pending_check` | ConditionThe original video result and charge need checking. | Next stepKeep the returned video ID and check that task. Do not send a replacement generation request while it is being checked. |
| Response503 · `owned_result_unavailable` | ConditionThe existing video download is temporarily unavailable. | Next stepCheck the same video task later and download its existing output. A new generation creates a separate operation. |
| Response409 · `video_not_ready` | ConditionThe video content has not been published. | Next stepCheck the original task status. Download after it reports completed; if it reports failed, follow its charge-check notice. |

### Aliases

#### Model aliases

**Ailoot Ultra** [`kwaivgi/kling-video-o1`](https://ailoot.ai/models/en/#m=kwaivgi%2Fkling-video-o1&route=Ultra&caller=kwaivgi%2Fkling-video-o1&fmt=videos)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`kwaivgi/kling-video-o1`](https://ailoot.ai/models/en/#m=kwaivgi%2Fkling-video-o1&route=Ultra&caller=kwaivgi%2Fkling-video-o1&fmt=videos)

FAQ · Kling: Video O1

What inputs and results are available?

`POST /v1/videos` · `kwaivgi/kling-video-o1`: `text`, `image` → `video`

Which fields does the request use?

`POST /v1/videos` · `kwaivgi/kling-video-o1`: `model`, `prompt`, `duration`, `resolution`, `aspect_ratio`, `generate_audio`, `frame_images`, `input_references`, `size`, `callback_url`, `session_id`, `trace`, `user`

What limits apply?

`POST /v1/videos` · `kwaivgi/kling-video-o1`: `duration.minimum`: `1`; `duration.maximum`: `600`; `frame_images.max_items`: `2`; `frame_images.min_items`: `1`

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