Kling 4.0 on Nereo: What You Can Actually Generate Today

On Nereo, Kling 4.0 generates single-pass clips from 3 to 30 seconds with native audio, in 720p or 1080p, and supports up to 10 keyframes and up to 15 combined reference assets. The 4K and 10-bit HDR options that appear in Nereo's comparison table are Kling's announced capabilities, which Nereo's own explanatory text says are not currently available on Nereo. [5.2] [5.3]

The Core Offer on Nereo

Clip length: Nereo describes Kling 4.0 as generating clips from 3 to 30 seconds in a single pass, with the duration chosen in a setting and longer clips costing more credits. [5.2]

Audio: Nereo's overview describes the clips as including native audio, generated from a text prompt or from a first and last frame. The supplied Nereo excerpts do not specify audio formats or controls, so those details should not be assumed. [5.2]

Keyframes and references: Nereo lists up to 10 keyframes and up to 15 combined reference assets for Kling 4.0, while noting that individual input types and generation modes may carry additional limits. [5.1] [5.3]

Free Image to Video AI Generator: Turn Photos to Videos | Nereo · www.nereo.io

Resolution and HDR: Where the Page Is Contradictory

Nereo's feature comparison lists 10-bit HDR output and 1080p and 4K resolution for Kling 4.0. Its explanatory text, however, says Kling's official guide describes 4K output with 10-bit HDR marked as coming soon, and that Kling 4.0 on Nereo currently renders in 720p or 1080p. [5.1] [5.3]

Reading the page as a whole, the supported position is that 720p and 1080p are the current Nereo outputs, while 4K and 10-bit HDR are capabilities Kling has announced. Several secondary articles claim 4K and HDR are live, but they conflict with Kling's own rollout note and with Nereo's description, so they should not be relied on for Nereo output. [5.3] [8.2] [7.3]

Practical Use and Checks Before You Generate

Because Nereo's comparison table and its explanatory text point in different directions on resolution, the practical step is to check what the generation panel actually offers. Nereo advises checking the duration, resolution and credit estimate before generating, then reviewing motion, audio and product detail before downloading. [5.4]

Credit costs are billed per second and shown before generation, so longer clips cost more. Independent platforms such as WaveSpeedAI and kie.ai also list Kling 4.0 at 720p or 1080p, which is consistent with the current availability Nereo describes, though those services are separate products and do not define Nereo's offer. [5.1] [8.4] [9.1]

Explore next

• How does Kling 4.0's keyframe control compare with the start and end frame workflow in earlier versions?
• What do credit costs look like for a 30-second clip compared with a 10-second clip on Nereo?
• How should I structure a multi-keyframe prompt for a product reveal?
• How do Kling 4.0's reference limits change when I mix images, video and voice inputs?

Sources

Open a source or expand its cited passages.

Relevance scores are model estimates of how well each source addresses this question, not probabilities or fact-check ratings. Reasoned guidance is identified on hover.

1. 88Kling 4.0 AI Video Generator: Features & Examples - Nereowww.nereo.ioNereo's own page describes its current clip length, resolution, keyframes and references, though it contains a contradiction on HDR and 4K.Watch official examples and plan your next video. Kling is rolling out 4.0 during October 2026; Nereo availability depends on the models shown in the generator.›
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   [5.1] Kling 4.0 is billed per second on Nereo, and the cost is shown before you generate. Prices checked October 23, 2026. […] Feature: 10-bit HDR output; Kling 4.0: 1080p and 4K; Kling 3.0: Not listed in the 4.0 comparison Feature: Reference workflow; Kling 4.0: Up to 15 combined assets; Kling 3.0: Limits depend on reference mode Feature: Multiple keyframes; Kling 4.0: Up to 10; Kling 3.0: Start/end-frame workflow […] Prompt Kling 4.0 0 / 5000 Create with Kling 4.0 […] Kling 4.0 is now live on

   [5.2] Nereo. Create cinematic clips from 3 to 30 seconds with native audio, from a text prompt or a first and last frame, in 720p or 1080p. See Kuaishou's official examples below and plan your next product video, ad or short film. […] How long are Kling 4.0 videos? On Nereo, Kling 4.0 generates clips from 3 to 30 seconds in a single pass. Choose any length in that range in the duration setting; longer clips cost more credits. Does Kling 4.0 support 4K and HDR?

   [5.3] Kling's official guide describes 4K output and 21:9 video, with 10-bit HDR marked as coming soon. On Nereo, Kling 4.0 currently renders in 720p or 1080p, in 16:9, 9:16, 1:1 or 21:9. How many references and keyframes can I use? Kling lists up to 15 combined reference assets and up to 10 keyframes. Individual input types and generation modes can have additional limits. […] The buttons on this page open Nereo's video tools with Kling 4.0 selected.

   [5.4] Check the duration, resolution and credit estimate before generating, then review motion, audio and product detail before downloading.

2. 84Kling 4.0 Release Date: What Can You Access Now?wavespeed.aiKling's official-style overview clearly separates announced capabilities from the HDR status and rollout caveat.Update statement: The full Kling 4.0 model is still awaiting broader release as of October 1, 2026. Access conditions, specifications, pricing, ...›
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   [8.1] Seedance 2.5 vs WAN 3.0 vs Kling 4.0: Specs, References and Price Compared […] Endpoint: video-extend; What it does: Continues a video from its last frame; Main inputs: video , prompt , optional last_image as a target final frame What is not offered on WaveSpeedAI, so nobody confuses it with Kling’s own announcement: Item: Clip length; Kling announcement: Up to 30 s; WaveSpeedAI: 3 to 30 s Item: Resolution; Kling announcement: 4K and 21:9 options announced; WaveSpeedAI: 720p or 1080p; no 4K

   [8.2] tier (Kling 3.0 and O3 are the models with native 4K tiers) Item: HDR; Kling announcement: 10-bit HDR marked coming soon; WaveSpeedAI: Not available […] Kling’s official 4.0 overview describes generation up to 30 seconds, 10 keyframes, up to 15 reference assets, stereo audio, more precise lip synchronization, multilingual on-screen text, and 4K and 21:9 options. Kling notes that availability may vary during its rollout, and marks 10-bit HDR at 1080p or 4K as coming soon.

   [8.3] Kling’s Flash early access was described in the release record as text-to-video, image-to-video and Omni Reference support, with 3-to-20-second, 720p, 8-bit SDR output. These are Kling’s statements about Kling’s own product. They are not a description of what is offered on WaveSpeedAI.

   [8.4] […] curl -X POST "https://api.wavespeed.ai/api/v3/kwaivgi/kling-v4.0/text-to-video" \ -H "Authorization: Bearer $WAVESPEED_API_KEY " \ -H "Content-Type: application/json" \ -d '{"prompt": "A sailboat leaves a bay at sunrise", "duration": 5, "resolution": "720p"}' […] How to Use Kling 4.0 Keyframes for a Product Reveal […] Does WaveSpeedAI offer 4K, HDR or Kling 4.0 Flash? No. Kling 4.0 on WaveSpeedAI produces 720p or 1080p clips of 3 to 30 seconds.

   [8.5] The 4K and HDR options and Flash early access come from Kling’s own announcements about its own product. Kling 3.0 and O3 are the models with native 4K tiers. How many reference files can I use? Reference-to-video accepts up to 10 images, 5 videos and 3 audios, 15 files at most, with audios 5-30 s each. Refer to them in the prompt as @Image1 , @Video1 and @Audio1 in the order given. Are outputs covered by commercial-use terms?

3. 72Kling 4.0 Video Guide: Prompts, Settings & Pricingkingy.aiKingy's review offers useful specification comparisons and rollout notes, but it is a third-party assessment.... Kling 4.0 video with chapter links, four recovered prompts, recorded settings and visual examples. Includes pricing context and test limits.›
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   [3.1] That distinction matters because the earlier evidence was a search-indexed interface. Our subsequent browser check reached the live official app , where the banner said “Kling 4.0 Available Now” and the creation panel selected Kling 4.0 with a 1080p, 10-second setting. The session was signed out. Opening Billing Rules led to sign-in, so we did not obtain an authenticated generation quote or verify account-specific limits.

   [3.2] […] Capability: Prompt length; Published specification: 8,000 tokens Capability: Framing; Published specification: 21:9, 16:9, 1:1, 9:16 and Auto Capability: Sound; Published specification: Two-channel stereo; voice-reference input Capability: Resolution and range; Published specification: 720p/1080p documented; 4K listed but marked forthcoming in launch-interface evidence; 10-bit HDR forthcoming Capability: Extension; Published specification: Repeated extension to two minutes is

   [3.3] forthcoming […] Kling 4.0 specifications and the limits that affect a real brief Capability: Generation; Published specification: Text-to-video, image-to-video, Omni Reference, first/last frames, multiple keyframes Capability: Duration; Published specification: 3–30 seconds per native generation Capability: Keyframes; Published specification: Up to 10 images Capability: Combined references; Published specification: 15 across images, videos, elements and voices Capability: Individual

   [3.4] reference caps; Published specification: 10 images; 5 videos; 7 elements, including 3 video elements; 3 voice profiles […] Run the main experiment in Omni Reference. Keep the product, reference files, prompt, model identity, resolution, aspect ratio and audio brief constant across repetitions. Save any exposed seed or prompt-enhancement setting. A later Keyframes experiment should have its own inputs and results.

   [3.5] Time: 0–6 seconds; Planned action: Front hero shot, slow orbit; What we inspect: Exact label, silhouette, material Time: 6–12 seconds; Planned action: Side and top reveal; What we inspect: Geometry and details absent from the front view […] Buying details checked October 22, 2026: Kling 4.0 buying profile : Introductory and renewal prices differ. A successful clip may still fail a product-label or continuity review; credit quotes vary by settings.

   [3.6] The original article keeps its existing dates and evidence scope; the linked profiles describe their own demonstrations. […] Sources and reporting notes

4. 55Kling 4.0 Explained: Inside Kuaishou's 30-Second, 10 ...miraflow.aiMiraflow's comparison makes claims about 4K and HDR that conflict with Kling's own rollout note and should be treated cautiously.Native clip length doubles from 15 seconds to 30. Keyframe control grows from a start frame and an end frame to up to 10 keyframes placed ...›
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   [7.1] [ 4] Morphic. "Kling 4.0: 30-Second AI Video, 10 Keyframes, and 4K." […] The early access build caps resolution at 720p, with 1080p, 4K and the 10-bit HDR output arriving with the full October rollout rather than day one [ 4] . […] Model: Seedance 2.5; Max single-pass clip length: Shorter single-pass window, physics-focused; Keyframe control: Reference-frame conditioning; Max resolution: Up to 4K; Reference inputs: Multi-reference blending; Audio: Native synced audio […] Model: Kling 4.0; Max

   [7.2] single-pass clip length: 30 seconds; Keyframe control: Up to 10 keyframes; Max resolution: 4K, 10-bit HDR; Reference inputs: Up to 15 combined (images, video, subjects, voice); Audio: Stereo, lip-synced Model: Kling 3.0; Max single-pass clip length: 15 seconds; Keyframe control: Start and end frame only; Max resolution: 4K, 8-bit SDR; Reference inputs: Up to 7 images/subjects, 1 video; Audio: Single-channel […] Audio : Kling 3.0 generated single-channel audio.

   [7.3] Kling 4.0 generates two-channel stereo audio with lip-synced dialogue across a wider set of languages and accents, from American English to Cantonese [ 4] . Color and resolution : both models support 720p, 1080p and 4K output, but Kling 4.0 adds 10-bit HDR at 1080p and 4K, plus a new 21:9 ultrawide aspect ratio for cinematic framing [ 3] .

   [7.4] […] Here is what a real 10-keyframe request looks like once you write it out in full, structured the way Kling 4.0 expects a multi-keyframe prompt to read, with each beat timestamped and described on its own: A 28 second continuous cinematic shot of a woman in a tailored charcoal coat walking through a rain-lit city crosswalk at night. Keyframe 1 (0s): wide establishing shot, she steps off the curb, neon signs reflected in the wet pavement.

   [7.5] Keyframe 2 (4s): medium shot, she glances up at a billboard, rain beading on her shoulders. Keyframe 3 (9s): close-up, her expression shifts from tired to resolved.

5. 48Kling 4.0 API – Create 30s AI Videos with Affordable ...kie.aikie.ai's listing describes 720p and 1080p output, a useful cross-check, but it is a separate product page.Build with Kling 4.0 API for realistic motion, synchronized audio, Omni Reference and up to 30-second video generation in 720p and 1080p, with 4K output coming ...›
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   [9.1] Build with Kling 4.0 API for realistic motion, synchronized audio, Omni Reference and up to 30-second video generation in 720p and 1080p, with 4K output coming ...

6. 45Meet All-New Kling 4.0!kling.aiThe release note snippet supports the 3–30 second and 720p/1080p/4K listing but lacks context on rollout status.Kling 4.0 Core Capabilities and Specifications ; Video Duration. 3–30 seconds ; Resolution. 720p / 1080p / 4K ; Dynamic Range. 10-bit HDR (1080p、4K) ; Aspect Ratio.›
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   [4.1] Kling 4.0 Core Capabilities and Specifications ; Video Duration. 3–30 seconds ; Resolution. 720p / 1080p / 4K ; Dynamic Range. 10-bit HDR (1080p、4K) ; Aspect Ratio.

7. 40Kling 4.0 Preview - 30s Video, Keyframes & HDRwww.photogptai.comThe PhotoGPT preview is a promotional page whose capability list mixes announced and available items.Kling 4.0 doubles Kling 3's announced maximum native duration from 15 to 30 seconds, then combines keyframe control, multimodal references, and more finishing ...›
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   [2.1] Capability: Delivery; Kling 3.0: Up to native 4K in supported workflows; Kling 4.0: 4K and 1080p with announced 10-bit HDR […] What do Kling 4.0 keyframes control? Does Kling 4.0 generate audio? What resolution does Kling 4.0 support? […] Up to 30-second native generation Up to 10 directed keyframes Up to 15 multimodal references Synchronized stereo audio Announced 4K HDR delivery Explore AI video generation […] Kling 4.0 doubles Kling 3's announced maximum native duration from 15 to 30

   [2.2] seconds, then combines keyframe control, multimodal references, and more finishing headroom for a complete scene. Native generation 30 sec A full campaign beat or long take in one output Keyframes 10 Place the visual states the story must pass through Multimodal references 15 Coordinate subjects, products, style, and motion Announced delivery 4K HDR 10-bit color and 21:9 framing are rollout capabilities […] Duration & place A 7-second shot set in the UK fixes the length and setting first.

   [2.3] […] Kling 3.0 Kling 4.0 Maximum duration Kling 3.0 Flexible 3–15 seconds Kling 4.0 Up to 30 seconds Scene direction Kling 3.0 Start/end frames and custom multi-shot Kling 4.0 Up to 10 keyframes across the sequence Reference workflow Kling 3.0 Image and element references in supported workflows Kling 4.0 Up to 15 image, video, and subject references Native audio Kling 3.0 Multilingual dialogue, sound, and lip sync Kling 4.0 Stereo audio with improved lip sync and voice support Delivery Kling 3.0

   [2.4] Up to native 4K in supported workflows Kling 4.0 4K and 1080p with announced 10-bit HDR

8. 30Kling 4.0 User Guidekling.aiThe Kling user guide snippet is brief and mainly describes the Flash mode, offering limited detail on the requested features.Designed for high-frequency creation, 4.0 Flash Mode enables video creation with faster generation and greater cost efficiency, lowering the ...›
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   [1.1] Designed for high-frequency creation, 4.0 Flash Mode enables video creation with faster generation and greater cost efficiency, lowering the ...

9. 25Kling 4.0 is finally here, and this upgrade is INSANE! We're ...www.instagram.comThe Instagram reel snippet is promotional and claims 4K and HDR without establishing availability.You can set up to 10 keyframes, give it up to 15 references, and it makes a full 30-second clip in one generation, up to 4K with 10-bit HDR and ...›
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   [10.1] You can set up to 10 keyframes, give it up to 15 references, and it makes a full 30-second clip in one generation, up to 4K with 10-bit HDR and ...

10. 10AI Video Just Got an Upgrade! Kling 4.0 - 10-Bit HDR, 4K & ...www.youtube.comThe YouTube page excerpt contains only footer text and no usable information.Kling 4.0 takes AI video generation further … native video generation up to 30 seconds. support 10-bit HDR, 4K / 1080p Resolution, and Video ...›
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