Kling API Pricing: Per-Second Cost for V3, Turbo, O1 & Omni

Kling V3 on Modellix costs $0.0672 to $0.336 per second of generated video, billed per second with no subscription. The rate depends on three things: the route, the resolution, and whether you turn on native audio.

The cheapest setup is 720p with audio off. 4K costs the same with or without audio. Price the exact route, resolution, and audio setting before you budget, because the same 10-second clip can cost $0.67 or $3.36.

Kling 4.0 is not on the API yet. For its confirmed specs and our per-second estimate, see Kling 4.0: release date, pricing, and what to use now.

Kling API Pricing at a Glance

Prices from the Modellix model pages. One detail most price lists miss: at 1080p with audio, Omni costs $0.112 per second against $0.1344 on V3, the same as Turbo.

For Kling's own subscription plans and official API units, see our Kling 3.0 cost breakdown.

What a Kling Clip Costs

Our calculations from the per-second rates above. Budget for retries too: count usable clips, not attempts, since five tries at the same setting cost five times as much. Run one prompt through two candidate routes and compare yield before you pick by list price.

Choose a Live Kling Route by Job

Do not reuse one payload across these paths. For example, V3 T2V has audio and multi_shot, Turbo T2V has neither in its public schema, and O1 T2V accepts audio: "off" only. Read the route's Schema when you switch models.

Old V1 and V2 routes such as kling-v2.5-turbo-t2v are no longer in the Modellix catalog, so do not copy a V2 request path from an archived guide.

See What Kling V3 Can Create

Copy any prompt below and try it yourself in the Kling V3 T2V playground. Generated on Modellix: 5 seconds, 720p.

Cinematic camera & expression shift

“Slow dolly-in on a woman sitting alone at a dim jazz bar counter, warm tungsten light. As a spotlight sweeps across her face, her expression shifts from calm to quiet surprise. Shallow depth of field, 35mm film look.”

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Natural dialogue & native audio

“Two friends share noodles at a rainy night street-food stall. The man laughs and says, "You still owe me dinner." Steam rises, neon reflects on the wet pavement, handheld camera, natural ambient sound.”

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Fluid action & body physics

“A parkour runner sprints across a sunlit rooftop, vaults a railing and lands in a roll, jacket and dust reacting realistically. Tracking shot at shoulder height.”

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Epic scale & camera movement

“Aerial drone shot rising over misty mountain ridges at sunrise, slowly revealing an ancient cliffside temple, golden light breaking through the clouds, sweeping cinematic reveal.”

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Open Kling V3 T2V in the Playground

Submit a Kling V3 Text-to-Video Job

The POST URL is https://api.modellix.ai/api/v1/kling/kling-v3-t2v. It requires prompt; the other settings below are valid schema values. Keep the API key server-side.

curl --request POST \
  --url https://api.modellix.ai/api/v1/kling/kling-v3-t2v \
  --header "Authorization: Bearer $MODELLIX_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "prompt": "A red panda walks through a bamboo forest at dawn, slow tracking shot",
    "duration": 5,
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "audio": "off",
    "multi_shot": false
  }'

The response returns a task_id and a get_result.url. Poll that URL until the task finishes, then download the video. The API guide covers authentication, task retrieval, and errors, and each model's Schema tab lists its fields.

Which Kling Route Should You Try First?

Start with V3 T2V for a prompt-only clip or V3 I2V if you have a first frame. Use Omni when references or scene continuity drive the result, and O1 when the motion or physical sequence is the hard part.

Turbo is useful for fast iteration, but compare the price badge for your exact settings before assuming it costs less. For portrait speech, kling/kling-avatar is a separate audio-driven route.

Run one job in the Playground first, then use an API key once the prompt and settings are worth repeating.