Kling 2.1 Pro — AI video generator
Image-to-video with a start frame and an end frame
Kling 2.1 Pro animates from an image and, unlike the other Kling models here, can also take a closing frame — so you choose where the clip starts and where it lands. A negative prompt and a prompt-adherence control are available too.
What Kling 2.1 Pro is good at
- Start-frame and end-frame control
- Negative prompt to rule out what you don't want
- Prompt-adherence setting from loose to strict
- 5- or 10-second clips
What people use it for
- Transitions between two product shots or two scenes
- Before-and-after reveals
- Storyboard beats where both the first and last frame are fixed
Kling 2.1 Pro specifications
- Duration
- 5s, 10s
- Audio
- Not supported
- Reference image
- Required
- Last frame
- Supported
- Negative prompt
- Supported
Plan limits apply on top of these — see pricing.
Example prompts for Kling 2.1 Pro
Written for this model in particular. Open one in the composer and edit it from there.
“A smooth dolly from the closed box to the product standing unboxed on the table”
Try this prompt“The day scene gradually turns to night as the city lights come on”
Try this prompt“The sketch fills in with colour and becomes the finished illustration”
Try this promptKling 2.1 Pro FAQ
- What is Kling 2.1 Pro?
- Kling 2.1 Pro is an AI video model from Kling, available on Vixlens. Kling 2.1 Pro animates from an image and, unlike the other Kling models here, can also take a closing frame — so you choose where the clip starts and where it lands. A negative prompt and a prompt-adherence control are available too.
- How long can a Kling 2.1 Pro clip be?
- Kling 2.1 Pro generates clips of 5s, 10s.
- Does Kling 2.1 Pro generate audio?
- No — Kling 2.1 Pro generates picture only. Several other video models on Vixlens do generate native audio.
- How much does Kling 2.1 Pro cost?
- Generating needs a plan — there is no free tier. Starter is $10/month for 1,000 credits (launch offer: $6/month for the first 20 Starter subscribers, locked in while they stay subscribed). Credits are spent per generation based on the model, resolution and duration, and the exact cost is shown before you generate.
Other video models on Vixlens
Seedance 2.5
Long-form AI video with reference control and native audio
ByteDanceSeedance 2.0
1080p AI video with multi-subject references and motion from a clip
ByteDanceSeedance 2.0 Mini
The cheapest way to test a video idea before committing credits
GoogleVeo 3.1
Google's flagship video model, with synchronized audio at up to 4K
GoogleVeo 3.1 Fast
Veo 3.1 quality at lower latency, for iterating on a shot
Black Forest LabsFlux 3 Video
Black Forest Labs' first video model, with a fast draft mode
Start generating with Kling 2.1 Pro
Every model on one credit balance — pick a plan and start creating.