What is the difference between Kling 4.0 Flash Keyframe to Video and Kling 4.0 Reference to Video?

Kling 4.0 Flash Keyframe to Video is made by Kling AI and Kling 4.0 Reference to Video by Kling AI; both are video models in the GetRun catalog. The difference you feel most in use is in the input parameters: Kling 4.0 Flash Keyframe to Video accepts first_frame_url, while Kling 4.0 Reference to Video accepts voices, elements, image_urls, video_urls, keep_original_sound. 4 parameters are shared by both.

Which is cheaper, Kling 4.0 Flash Keyframe to Video or Kling 4.0 Reference to Video?

A sample run of Kling 4.0 Flash Keyframe to Video costs From Rp1,374.48 / second without video referensi, and Kling 4.0 Reference to Video costs From Rp2,304.27 / second without video referensi. Those are the cost of one sample run, not a flat rate: models billed per unit are recalculated from the duration or token count you ask for, and the estimated total is always shown before the task is created.

GetRun / Video / Kling 4.0 Flash Keyframe to Video vs Kling 4.0 Reference to Video

Kling 4.0 Flash Keyframe to Video vs Kling 4.0 Reference to Video

Kling 4.0 Flash Keyframe to Video from Kling AI and Kling 4.0 Reference to Video from Kling AI are both video models you can run from one GetRun account on a rupiah balance. A sample run costs From Rp1,374.48 / second without video referensi against From Rp2,304.27 / second without video referensi, and both show an estimate before the task is created. The comparison below is assembled from the catalog, so the figures match what is billed.

Comparison table

	Kling 4.0 Flash Keyframe to Video	Kling 4.0 Reference to Video
Provider	Kling AI	Kling AI
Cost of one sample run	From Rp1,374.48 / second without video referensi	From Rp2,304.27 / second without video referensi
Estimated processing time	30 to 600 seconds	30 to 600 seconds
Availability	available now	available now
Capabilities	720p, 3–20 seconds, Native audio	Up to 1080p, 3–30 seconds, Native audio
Number of input parameters	5	9

The parameters that set them apart

Of the 10 parameters that appear on either model, 4 are used by both. Only Kling 4.0 Flash Keyframe to Video accepts first_frame_url. Only Kling 4.0 Reference to Video accepts voices, elements, image_urls, video_urls, keep_original_sound.

Trying both

Both are called the same way — POST https://getrun.id/v1/tasks with {"model": "kling-4.0/flash-keyframe-to-video"} or {"model": "kling-4.0/reference-to-video"} — so swapping one for the other means changing a single value, with no other code to touch. Open Kling 4.0 Flash Keyframe to Video or Kling 4.0 Reference to Video for sample output and the full parameter list.

Common questions

What is the difference between Kling 4.0 Flash Keyframe to Video and Kling 4.0 Reference to Video?: Kling 4.0 Flash Keyframe to Video is made by Kling AI and Kling 4.0 Reference to Video by Kling AI; both are video models in the GetRun catalog. The difference you feel most in use is in the input parameters: Kling 4.0 Flash Keyframe to Video accepts first_frame_url, while Kling 4.0 Reference to Video accepts voices, elements, image_urls, video_urls, keep_original_sound. 4 parameters are shared by both.
Which is cheaper, Kling 4.0 Flash Keyframe to Video or Kling 4.0 Reference to Video?: A sample run of Kling 4.0 Flash Keyframe to Video costs From Rp1,374.48 / second without video referensi, and Kling 4.0 Reference to Video costs From Rp2,304.27 / second without video referensi. Those are the cost of one sample run, not a flat rate: models billed per unit are recalculated from the duration or token count you ask for, and the estimated total is always shown before the task is created.
Can I use Kling 4.0 Flash Keyframe to Video and Kling 4.0 Reference to Video from one account?: Yes. Both run from the same rupiah balance and are called the same way: POST https://getrun.id/v1/tasks with model "kling-4.0/flash-keyframe-to-video" or "kling-4.0/reference-to-video". No separate accounts, credit cards, or per-provider subscriptions — the balance is topped up through QRIS.

Other comparisons in this category

Compare other video models on Generate AI Video, Priced in Rupiah, see every comparison, or open the model catalog.