Kling AI VideoGenerator — Every KlingModel in One Place

Partly. You get starter credits on this site with no card, which covers a few short clips at 720p — enough to judge whether the output suits your material before paying. Free Kling AI video does not include the longest durations or 4K, because those consume several times more credits per second than a 720p draft. Kling 4.0 Flash, capped at 720p and 20 seconds, is the tier designed for high-volume cheap generation. Anyone advertising unlimited free access to a model this expensive to run is either rate-limiting silently or serving an older model.

Kling AI video is billed per second of output, not per generation, so a failed render costs the same as a good one and a 5-second test costs a sixth of a 30-second take. Three things move the rate: resolution is by far the largest factor, native audio adds to it, and Pro model tiers cost more than their Standard counterparts. Because credits scale with length rather than attempts, the cheapest way to work is to settle composition at a low resolution and render once at full quality. Full per-second rates for every model, plus credit pack prices, are on the pricing page.

It depends on the model. Kling 4.0 generates 3 to 30 seconds in a single pass, and Kuaishou says clips will be extendable multiple times up to 2 minutes, listed as coming soon. Kling 3.0 caps at 15 seconds per generation. Kling 4.0 Flash, the early-access tier, runs 3 to 20 seconds. The outlier is Kling Avatar 2.0, which produces up to five minutes of talking or singing video from a single photo and an audio track — far longer than any of the general video models, because it solves a narrower problem.

It depends on the job, and the honest answer names where it loses. Kling 4.0 leads on output quality and control: 4K with 10-bit HDR, up to 10 keyframes, 21:9 framing. ByteDance's Seedance 2.5 matches its 30-second single-pass length and beats it decisively on reference capacity — 50 assets against Kling's 15 — so for reference-heavy compositing Seedance is the stronger tool. If your deliverable is graded, wide, or has to hit specific story beats, Kling 4.0 is the better pick. Benchmark both on your own prompts rather than on anyone's showreel.

Yes, and it is one of the most-used paths. Upload a single still and Kling animates it with camera movement and, on Kling 4.0, synchronized stereo audio. For tighter control you can add reference images that lock a character's face or a product's exact colour — Kling 4.0 accepts up to 15 reference items in total, of which 10 can be images. A practical note: when you start from an image, describe only motion and light in the prompt. Re-describing what is already in the picture tends to make the model drift away from it.

Four: Kling 4.0, Kling 3.0 and 3.0 Omni, Kling 2.6, and Kling Avatar 2.0, all from the same prompt box. They are not interchangeable — Kling 4.0 for length, resolution and keyframe control; Kling 3.0 for anything you need through the API today, since Kling 4.0 is not on the API plans yet; Kling 2.6 for motion transferred from a reference clip; Kling Avatar 2.0 for a talking or singing character running longer than 30 seconds. The model selector sits above the prompt box, and each model has its own page with full specifications.

Kuaishou has confirmed October 2026 for Kling 4.0. Kling 4.0 Flash, the faster tier in the same lineup, opened to a limited group of users for early access on September 28, 2026 at 720p and up to 20 seconds. Two capabilities are dated later than the model itself: 10-bit HDR output and multi-pass extension to 2 minutes are both listed as coming soon rather than available at launch. Until Kling 4.0 is generally available, Kling 3.0 is the model to use for anything with a deadline.

About two minutes for a typical clip, though it varies with length, resolution and whether audio is enabled. A short 720p draft comes back faster than a full-length 4K render with HDR and native audio. The practical workflow is to draft short and cheap first — settle composition, camera move and keyframes at 720p, then re-render once at full resolution. A 4K attempt consumes several times what a 720p draft does, so a single avoided re-roll pays for a handful of drafts. Kling 4.0 Flash exists for exactly this: fast, 720p, up to 20 seconds.

It depends on the model. Kling 4.0 outputs 720p, 1080p and 4K, and adds 10-bit HDR at the top two resolutions — a capability no earlier Kling version has. Kling 3.0 renders 1080p and 4K but without HDR. Kling 4.0 Flash, the early-access tier, is 720p and 8-bit SDR only. Kling Avatar 2.0 runs at 1080p and 48fps. One thing to know about 4K on this platform: it is generated at full resolution rather than upscaled afterward, which is why texture and grain hold up on a large screen where an upscaled clip goes soft. It is also the setting that consumes the most credits by a wide margin.

Yes, on paid tiers. Output from paid plans is watermark-free and cleared for commercial use, while free-tier clips carry a watermark — the standard trade for generating without a card. Check the licensing terms on your specific plan before using a clip in a paid campaign, since commercial rights come with the paid tiers rather than the free allowance. For brand work there is a practical limit worth knowing in advance: references get a product close on shape and colour, but logos and fine surface detail shift between generations. For anything that has to be pixel-accurate, shoot the hero product and use Kling AI video for the scene around it.

Not one worth using for finished work. Video generation costs real money to run — a single 30-second 4K clip consumes a meaningful amount of compute — so any service offering unlimited free generation is either capping you invisibly, watermarking heavily, or running an older and cheaper model than it advertises. What is genuinely available free is a starter allowance, which is what this site gives you: enough credits to test your own prompts at 720p before deciding whether to pay. Exact allowances and rates are on the pricing page.