Run Kling 1.5 on Pollo API
Kling 1.5 turns a still image into believable motion, and its first-and-last-frame control lets you pin exactly how a clip opens and closes. Movement looks more realistic than Kling 1.0, with tighter prompt relevance.
With Kling 1.5 on Pollo API, you can add image-to-video generation to your app, choose standard, pro, or 4K output, and generate 5 or 10 second clips per request.
Key Features of Kling 1.5 API
First and Last Frame Control
Supply a starting image and an optional tail image, and the model fills the motion between them, giving precise control over how a clip begins and where it ends.
Realistic Motion
Movement reads more naturally than in Kling 1.0, with smoother trajectories and fewer warping artifacts, so animated subjects stay believable across the full clip.
Stronger Prompt Relevance
Descriptions map more closely to what appears on screen, so subjects, actions, and staging follow the brief with less rerolling than the previous generation.
Adjustable Prompt Influence
Dial how tightly the output follows your text, balancing faithful direction against the model's own motion instincts, so you can loosen or tighten control per shot.
Up to 4K Output
A dedicated high-resolution mode renders detailed clips for large screens, while standard and pro modes trade resolution for faster, lighter generation.
Negative Prompt Steering
Name what you want kept out, and the model suppresses those elements, clearing unwanted objects, textures, or artifacts before they reach the final frame.
Use Cases of Kling 1.5 API
- Product Motion From a Single Photo: Animate a catalog still into a short rotating or drifting shot without a full shoot, useful for storefront and listing tools.
- Start-to-End Transformations: Set an opening and closing frame to show change over time, such as a sketch resolving into a finished illustration.
- Realistic Nature Loops: Bring landscape or water stills to life with plausible motion for ambient backgrounds and screensaver-style content.
- Concept-to-Clip Previews: Turn a described idea into a moving shot quickly so creative teams can preview direction before committing budget.
- Portrait Animation: Give a portrait subtle movement, from a turning head to shifting light, for avatar and storytelling apps.
- High-Resolution Marketing Cuts: Use 4K output for detail-heavy promo clips that hold up on large displays and hero banners.
- Iterative Draft Generation: Rough shots in standard mode, then refine in pro or 4K, keeping a fast loop inside automated content pipelines.
How to Use Kling 1.5 API
- Get an API Key: Create a Pollo API account and generate your API key from the developer dashboard.
- Choose the Model: Send requests to the Kling 1.5 endpoint at
/generation/kling-ai/kling-v1-5. - Add Your Inputs: Provide an
imageURL to animate, an optionalimageTailfor the closing frame, and aprompt, then setlength(5 or 10) andmode(std, pro, or 4k). - Generate and Retrieve: Submit the task, poll the returned task status, and download the video once generation succeeds.
Prompting Best Practices for Kling 1.5 API
Describe the subject, the motion you want, and the mood. When using a start and end image, keep your text aligned with the visual change you expect between the two frames.
A Simple Prompt Formula
Subject + the motion or transition to perform + camera movement + setting and lighting + style
What You Should Notice
- Match Text to Frames: When you set a tail image, describe the transition so the motion connects your first and last frames logically.
- Describe Concrete Motion: State exactly how the subject moves, such as drifting, rotating, or unfolding, so animation has a clear target.
- Use Negative Prompts: List elements to exclude to strip artifacts, extra limbs, or unwanted objects from the result.
- Tune Prompt Influence: Raise it for strict adherence to your text, lower it to let the model add natural motion.
- Pick Mode by Need: Draft in standard mode, then switch to pro or 4K when final detail matters.
Example Prompts
Blooming Time Lapse
"A tight bud on a green stem slowly unfurls into a full red poppy, petals opening one by one. Macro camera holds steady, soft morning light, dewdrops catching the sun, clean realistic style."
Potter at the Wheel
"A pair of hands presses into spinning wet clay, the walls rising into a tall vase as the wheel turns. Overhead camera slowly pushes in, warm studio light, earthy realistic style."
Coastal Drone Reveal
"Waves roll against dark volcanic rocks as the camera lifts and pulls back to reveal a lighthouse on the cliff. Late afternoon golden light, misty air, realistic aerial style."
Neon Arcade Comes Alive
"A retro arcade interior stirs to life, screens flickering and neon signs buzzing while a figure leans over a cabinet. Slow lateral camera glide, saturated purple and cyan light, nostalgic style."
Kling 1.5 vs Kling 1.0 vs Runway Gen-3 Alpha
| Capability | Kling 1.5 | Kling 1.0 | Runway Gen-3 Alpha |
|---|---|---|---|
| Motion realism | ✅ Improved over 1.0 | ✅ Baseline | ✅ Strong |
| First and last frame control | ✅ | ❌ Limited | ❌ |
| Prompt relevance | ✅ Tighter than 1.0 | ✅ Baseline | ✅ Good |
| Max resolution | Up to 4K mode | Standard | Up to 4K (upscaled) |
| Clip length | 5 or 10 seconds | 5 seconds | Short clips |
| Recommended For | Keyframe-controlled image-to-video | Simple image-to-video | Text-driven creative shots |
Why Choose Kling 1.5 API?
Kling 1.5 is a strong pick for controlled image-to-video, from pinning start and end frames to rendering final cuts in up to 4K with more realistic motion.
Through Pollo API, you reach Kling 1.5 with one API key alongside 300+ leading video and image models, with clean docs, task polling, and generation that costs less than Fal AI.
Start with the Kling 1.5 endpoint on Pollo API to ship keyframe-controlled image-to-video, then compare it against newer Kling versions without touching your integration.
Kling 1.5 API FAQs
What is Kling 1.5?
Kling 1.5 is a Kling AI video model and an upgrade over Kling 1.0, offering more realistic motion, tighter prompt relevance, first-and-last-frame control, and output up to 4K.
Does Kling 1.5 API support image inputs?
Yes. It animates a starting image and accepts an optional tail image, so you can control both how a clip opens and how it ends.
What resolutions and lengths are available?
Kling 1.5 offers standard, pro, and 4K modes, with clip lengths of 5 or 10 seconds chosen per request.
How is Kling 1.5 different from Kling 1.0?
It improves motion realism and prompt relevance over 1.0 and adds finer control, including tail-frame guidance and higher-resolution output.
Can I control what stays out of the video?
Yes. A negative prompt lets you suppress unwanted objects, textures, or artifacts, cleaning up results without reworking your main prompt.
Why run Kling 1.5 through Pollo API?
Pollo API gives one integration for Kling 1.5 and 300+ other models, with documentation, task tracking, and lower-cost generation than comparable providers.