Kling 2.1 I2V is the newest image-to-video release designed to fix three pain points creators face: unstable motion, weak character consistency, and limited camera control. It brings fluid, realistic motion, stronger facial and identity coherence, and precise camera tools (tracking, dolly, pan, zoom), all while speeding up generation versus 2.0. If you’re wondering what it solves and how much it costs, this guide gives you clear answers and a fast path to try it now at $0.23 per video via API.
Kling 2.1 I2V ‘s Performance
What is Kling 2.1 I2V？
| Category / Models | Key Capabilities | Output Resolutions | Default Durations | Notable Controls | Positioning / Cost |
|---|---|---|---|---|---|
| Kling 2.1 Standard | Improved action control, consistent character styling, better camera framing tools, faster generation vs. 2.0 | 360p, 540p, 720p, 1080p | 5 or 10 seconds (longer via concatenation) | Camera framing tools; general motion control | 20 points per video on website |
| Kling 2.1 Pro | Sharper detail, refined lighting, realistic rendering, precise camera moves (tracking, dolly, pan, zoom), dynamic motion control; first- and last-frame conditioning | 360p, 540p, 720p, 1080p | 5 or 10 seconds (longer via concatenation) | Precise camera movement; start/end conditioning | paid subscribers only |
| Kling 2.1 Master | Premium variant with advanced 3D motion, refined facial expressions, multiple aspect ratios, cinematic quality | 360p, 540p, 720p, 1080p | 5 or 10 seconds (longer via concatenation) | Precise visual and narrative control | 100 points per video on website |
Kling 2.1 I2V‘s Architecture and Key Features
Kling 2.1 introduces a next-generation image-to-video pipeline that blends cutting-edge spatiotemporal transformers with adversarial refinement to achieve stable, coherent motion and consistent rendering across frames. Its architecture emphasizes multi-scale attention, temporal coherence, and physics-aware motion modeling, enabling precise control over both scene dynamics and visual style from image and text inputs.
- Core Model Design: The system adopts a hybrid paradigm that combines spatiotemporal convolutional transformers with Generative Adversarial Networks (GANs). It features multi-scale hierarchical attention and temporal coherence modules, tailored for long-range spatiotemporal modeling and consistent frame-to-frame rendering.
- Motion and Physics Simulation: A 3D spatiotemporal attention architecture enables realistic motion and coherent visual progression across frames. Novel motion inference components and physics-informed simulation drive natural, fluid character movements and complex scene dynamics.
- Input Processing: Kling 2.1 employs an advanced cross-modal fusion pipeline that integrates detailed feature extraction from input images with natural-language prompts, enabling nuanced scene evolution and stylistic adjustments grounded in both visual and textual cues.
- Training Data: The model is trained on a large-scale, proprietary multimedia corpus containing diverse paired image-to-video sequences—spanning cinematic clips, nature scenes, and dynamic artworks—augmented with multilingual descriptive captions to promote strong generalization across styles and contexts.
Built on a large, diverse corpus of image-to-video pairs with multilingual captions, Kling 2.1 generalizes across cinematic, natural, and artistic domains.
- Superior Motion Quality：Starting with version 1.6, Kling models stand out for generating fluid, lifelike motion that steers clear of the typical artifacts and choppy movements found in many video systems.
- Character Animation：The Kling lineup shows strong proficiency in character animation, with version 2.1 notably excelling at maintaining facial consistency across entire clips. Kling 2.1 offers outstanding character coherence and expressive emotion, making it well-suited for story-centric productions.
Prompt Adherence and Guidelines：Relative to numerous alternatives, Kling models maintain high faithfulness to text prompts. Versions 2.0 and 2.1 were engineered for even stronger prompt alignment than 1.6. All current Kling models support negative prompts, enabling more precise control over the results.
Kling 2.1 I2V VS Wan 2.2, Vidu2.0, Minimax 02, Seedance V1 I2V
| Feature | Kling 2.1 I2V | Wan 2.2 I2V | Vidu 2.0 | Minimax 02 (Hailuo) | Seedance V1 I2V |
|---|---|---|---|---|---|
| Primary Focus | High-fidelity physics, dynamic motion, ease of use. | Open-source, deep customization, cinematic aesthetic. | Speed, affordability, practical storytelling tools. | Cinematic realism, physics simulation, cost-effectiveness. | Narrative storytelling, multi-shot generation, prompt adherence. |
| Max Resolution | 1080p (Master tier available). | 720p. | 1080p. | Native 1080p. | 1080p. |
| Key Strength | Excellent motion simulation for action/dance, fast rendering. | Open-source (Apache 2.0), MoE architecture, high user control. | Extremely fast (4s video rendered in ~10s), Start/End Frame Control. | Top-tier physics simulation, director-level controls. | Native multi-shot generation, strong prompt adherence. |
Kling 2.1 I2V’s Cost
| Single Video Specification | Resource Package Deduction Count | Unit Price (Excluding Discount) |
|---|---|---|
| 【Video V2.1】Standard mode, 5-second video duration | Deduct 2 counts from total | $0.28 |
| 【Video V2.1】Standard mode, 10-second video duration | Deduct 4 counts from total | $0.56 |
| 【Video V2.1】Professional mode, 5-second video duration | Deduct 3.5 counts from total | $0.49 |
| 【Video V2.1】Professional mode, 10-second video duration | Deduct 7 counts from total | $0.98 |
| 【Video V2.1 Master】5-second video duration | Deduct 10 counts from total | $1.4 |
| 【Video V2.1 Master】10-second video duration | Deduct 20 counts from total | $2.8 |
Novita AI offers a very low-cost, stable video API. Compared to the reference pricing, Novita is generally 12%–20% cheaper. The largest savings are for Standard 10s (~19.6%), followed by Standard 5s (~17.9%) and Master (~16.4%); Professional sees a smaller reduction (~12%–17%).
API Name Mode Duration Resolution Pricing Kling V2.1 Image to Video Standard 5s 720P $0.23 /video Standard 10s 720P $0.45 /video Professional 5s 1080P $0.43 /video Professional 10s 1080P $0.81 /video Kling V2.1 Master Image to Video Master 5s 1080P $1.17 /video Master 10s 1080P $2.34 /video
How to Access Kling 2.1 I2V？
Step 1: Log In and Access the Model Library
Log in to your account and click on the Model Library button.
Step 2: Choose Your Model
Browse through the available options and select the model that suits your needs.
Step 3: Get Your API Key
To authenticate with the API, we will provide you with a new API key. Entering the “Settings“ page, you can copy the API key as indicated in the image.
Step 4: Install the API
Install API using the package manager specific to your programming language.
After installation, import the necessary libraries into your development environment. Initialize the API with your API key to start interacting with Novita AI LLM. This is an example of using chat completions API for python users.
import requests
url = "https://api.novita.ai/v3/async/kling-v2.1-i2v"
payload = {
"image": "<string>",
"prompt": "<string>",
"mode": "<string>",
"duration": "<string>",
"guidance_scale": 123,
"negative_prompt": "<string>"
}
headers = {
"Content-Type": "<content-type>",
"Authorization": "<authorization>"
}
response = requests.post(url, json=payload, headers=headers)
print(response.json())
Future Trends in Kling 2.1 I2V Technology
- Continued Rapid Iteration: The rapid progression from Kling 2.0 to 2.1 suggests Kuaishou is prioritizing fast-paced development. Future versions are likely to further improve quality, speed, and cost-efficiency.
- Enhanced Realism and Control: The industry is trending toward higher photorealism, more natural physics, and finer user control over elements like character consistency, lighting, and camera movement.
- Longer Video Generation: Extending the duration of coherent video remains a key goal. While Kling 2.1 Pro reaches 30 seconds, future iterations will likely push this boundary further.
- Improved Handling of Complex Scenarios: Development will likely target current challenges, such as executing complex actions and maintaining consistency in intricate scenes.
- Democratization of Advanced Features: Professional-grade capabilities—like advanced cinematic controls and multi-element editing (e.g., swapping or removing objects)—are expected to become more polished and accessible in standard tiers over time.
Kling 2.1 I2V meaningfully upgrades motion quality, character coherence, prompt alignment, and camera control—precisely the issues that limit many image‑to‑video tools. With clear tier options up to 1080p and API pricing starting at $0.23 per video, it offers a practical, cost‑effective path to studio‑grade results. If you need reliable motion, consistent characters, and precise cinematics without breaking the bank, Kling 2.1 is ready to try now.
Frequently Asked Questions
It delivers smoother motion, better character consistency, stronger prompt adherence, and precise camera control with faster generation.
Up to 1080p at 5s or 10s by default, with longer clips achievable via concatenation (some Pro workflows reach 30s).
Log in, pick Kling 2.1 in the Model Library, copy your API key, install the SDK, and call the async endpoint with your image and prompt.
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