HopBase Docskling-v4VideoExamples verified 2026-09-25Kling 4.0
Kling 4.0: 3–30 seconds, 720P / 1080P, 21:9 supported, every video comes with sound.
- Official price
- $0.1471from/ secondBilled by output duration
- Resolutions
- 720p · 1080p
- Supports
- Audio
Notes
- Media specs are checked only at run time: invalid media makes the task fail a few minutes after submission (not billed).
- Result links expire 24 hours after completion.
- Text-to-video and first-frame image-to-video only; no reference images or reference videos.
- With a first frame, the output follows the input image's aspect ratio and aspect_ratio has no effect.
Pricing
Official price in USD. Actual charge = official price × group multiplier.
- 720p · Silent · No reference
- $0.1471 / second
- 720p · With audio · No reference
- $0.1471 / second
- 1080p · Silent · No reference
- $0.2206 / second
- 1080p · With audio · No reference
- $0.2206 / second