When to choose Kling 2.1
Kling 2.1 is a separately selected Kling version: image-to-video. This version offers 5 or 10 seconds. An input image is required, unlike 2.1 Master and versions that accept text-only generation.
Kling AI · Model and API
Kling 2.1 API — pricing and video generation
Animating an interior photograph is a practical starting point for Kling 2.1. Explore this version's parameters, estimate API costs and prepare a request for your product. This page focuses on Kling 2.1, so its configuration and pricing can be compared with other versions.
Capabilities
Kling 2.1: inputs and parameters
Kling 2.1 in runblob accepts an image and a movement description. Duration: 5–10 seconds; select a supported value in the form. Image input supports up to 1 references. The prompt limit is 2500 characters.
How to integrate the Kling 2.1 API
Connect Kling 2.1 through /v1/kling/generate. Playground selection: model=kling_2.1. Start with an image and a movement description, then review the parameters and request price. The form builds example JSON for this version, providing a starting point for a website, application or internal tool. Authentication and result retrieval are covered in the API documentation.
Animating an interior photograph
Start with a focused brief: animating an interior photograph. Describe the subject, composition and lighting, then define camera and subject movement. Avoid changing every setting at once: keep the original prompt and compare alternatives with one change each. This makes evaluation of Kling 2.1 on your own assets more useful.
Kling 2.1: API pricing and budget
Compare Kling 2.1 API pricing at matching settings: the selected mode and a 5–10-second duration. The table below reads the current rate and billing unit from the runblob catalog. Estimate a batch budget using the relevant request price and the number of attempts, including test iterations. When evaluating an affordable or cheap API, start with a small representative test set as well as the listed rate.
Use cases
Animating an interior photograph
Kling 2.1 for short advertising scenes and video content
Integrating Kling 2.1 into your own service through the API
Prompt examples and workflows
Animating an interior photograph
Animating an interior photograph. The camera moves slowly from left to right, soft evening light, one main subject, smooth movement without cuts.
An example brief for Kling 2.1, not a guaranteed generation result. Kling 2.1 in runblob accepts an image and a movement description. Duration: 5–10 seconds; select a supported value in the form. Image input supports up to 1 references. The prompt limit is 2500 characters.
Explore model versions
Versions and pricing
Runblob prices in USD. The final cost depends on the selected version and request parameters. Public rates refresh every six hours; personal rates are available in your dashboard.
Playground
Configure the parameters and build an API request. Sign in to runblob to start a generation.
How to integrate
- Sign in to runblob and open the model’s playground.
- Choose a version, format and parameters. Check the cost before starting.
- Submit your request and retrieve the result. Authentication and status endpoints are described in the model documentation.
Frequently asked questions
What does Kling 2.1 support in runblob?
Kling 2.1 in runblob accepts an image and a movement description. Duration: 5–10 seconds; select a supported value in the form. Image input supports up to 1 references. The prompt limit is 2500 characters.
How much does the Kling 2.1 API cost, and how can I control spending?
Compare Kling 2.1 API pricing at matching settings: the selected mode and a 5–10-second duration. The table below reads the current rate and billing unit from the runblob catalog. Estimate a batch budget using the relevant request price and the number of attempts, including test iterations. When evaluating an affordable or cheap API, start with a small representative test set as well as the listed rate.
How can I try Kling 2.1 and get an example request?
Connect Kling 2.1 through /v1/kling/generate. Playground selection: model=kling_2.1. Start with an image and a movement description, then review the parameters and request price. The form builds example JSON for this version, providing a starting point for a website, application or internal tool. Authentication and result retrieval are covered in the API documentation.
How does Kling 2.1 differ from other variants?
Compare accepted inputs, reference limits, quality and video duration on the relevant version pages. Kling 2.1 is selected separately as kling_2.1. A mode name alone does not guarantee a lower price or a better result: evaluate the same brief for your particular use case.