Kling 4.0 Flash

Coming soonvideomultimodal

0 models available

Provider: Kling

Updated: Recently

Kling 4.0 Flash is the lighter, faster model in Kling AI's Kling 4.0 family, built for frequent creation. It generates 3–20 seconds of 720p, 8-bit SDR video from text, a first-frame image or Omni Reference.

Available Models

Kling 4.0 Flash isn't live on APIPod yet — integration is in progress. Models will be listed here at launch.

Notify me at launch

Kling AI · Kling 4.0 Flash · Coming to APIPodComing soon

Draft fast keep the best.

Kling 4.0 Flash is the lighter, faster member of the Kling 4.0 family. Generate 3–20 second clips at 720p from text, a first frame or Omni Reference, explore a dozen directions, then render the keeper on Kling 4.0.

Notify me at launch Use Kling 4.0 today

Kling 4.0 Flash · Official sample

Refs in

Kling AI's official Flash sample: two fighters and a gym went in as references. The contact sheet holds eight frames from that one generation — click one to circle it.

Duration: 3–20 s
Resolution: 720p
Dynamic range: 8-bit SDR
Inputs: 3 modes
Built for: Iteration
Family: Kling 4.0

01 / 06Three ways in

Start from anything.

Flash covers the three starting points you reach for while exploring. End frames, multi-keyframes and video editing stay with Kling 4.0.

Text-to-video

A sentence

Describe the subject, the action, the camera and the light, and get a 3–20 second draft back.

Image-to-video

A first frame

Lock the opening composition with one image and let Flash animate the scene from there.

Omni Reference

Your references

Combine character, product and location references so even the first drafts look like your project.

Kling AI hasn't published Flash's reference limits, audio support or aspect ratios yet; this page lists only what the official specification states.

02 / 06Workflow

Draft on Flash. Finish on 4.0.

Flash is where ideas are cheap to try. Kling 4.0 is where the keeper becomes the final take — longer, sharper and fully directed. Same family, same API, one model name apart.

Kling 4.0 Flash
Explore
Fire off variations of one idea — angles, actions, moods — at 720p, while they're still cheap to throw away.
You
Circle the keeper
Pick the take that works and lock down what made it work: the prompt, the first frame, the references.
Kling 4.0
Finish
Re-render it on Kling 4.0: up to 30 seconds at 1080p, first and last frames, keyframes and stereo sound.

03 / 06When to use Flash

Made for the many, not the one.

Anywhere you need volume and speed before polish.

Storyboards & animatics

Turn a shot list into moving boards in minutes, so the team reacts to motion instead of stills.

Social variants

Spin hooks, openings and formats for short-form channels, and keep the ones that hold attention.

Ad concepts

Rough out several creative routes for one product before committing budget to the final render.

Previs for long takes

Block a scene in 20-second drafts, then rebuild the approved version as one 30-second Kling 4.0 take.

04 / 06Spec sheet

Flash, next to 4.0.

Kling AI's published specifications for both models. Where Flash has no published value, the cell is marked —.

Capability	Kling 4.0	Kling 4.0 Flash
Text-to-video	Yes	Yes
Image-to-video (first frame)	Yes	Yes
First & last frame	Yes	—
Multi-keyframes	Up to 10 keyframe images	—
Omni Reference	Yes	Yes
Video editing	Coming soon on APIPod	—
Duration	3–30 s	3–20 s
Resolution	720p / 1080p	720p
Dynamic range	10-bit HDR announced (not on APIPod yet)Coming soon	8-bit SDR
Aspect ratio	21:9 / 16:9 / 1:1 / 9:16 / Auto	—
Audio	Two-channel stereo	—
Prompt length	Up to 8,000 tokens	—
Reference inputs	10 images · 5 videos · 7 elements · 15 total	—
Video extension	Repeated, up to 2 minutesComing soon	—

— = not listed in Kling AI's official Kling 4.0 Flash specification. Source: Kling AI release notes, October 2026.

Ready for the final take? Explore Kling 4.0

05 / 06API

Eight drafts, one script.

Once live, Flash will share Kling 4.0's async endpoint, so moving a draft to the final render is a one-word change. Submit drafts in parallel and collect them together.

At launch: POST /v1/videos/generations with model kling-4.0-flash — one task_id per draft.
GET /v1/videos/status/{task_id} for each draft, or pass a callback_url.
For the keeper, send the same request again with model kling-4.0-t2v — Kling 4.0 is already live.

Get an API key now API docs

curl https://api.apipod.ai/v1/videos/generations \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kling-4.0-flash",
    "prompt": "Two boxers trade jabs in a basement gym, handheld, fluorescent light",
    "duration": 10,
    "aspect_ratio": "16:9"
  }'

# {"code":200,"data":{"task_id":"<task_id>","status":"pending"}}

Preview: Kling 4.0 Flash isn't live on APIPod yet. This request follows the unified video schema; the API docs will be final at launch.

06 / 06FAQ

Questions, answered.

What is Kling 4.0 Flash?

Kling 4.0 Flash is the lighter, faster model in Kling AI's Kling 4.0 family, built on Kling 4.0 with a subset of its capabilities. It is designed for frequent creation: fast generation at better value, for drafting and iterating on video ideas.

Can I call Kling 4.0 Flash on APIPod today?

Not yet. Kling 4.0 is live on APIPod today, and Kling 4.0 Flash is being integrated now; at launch you set model to kling-4.0-flash. Until then, draft on Kling 4.0 or Kling 3.0 Turbo (3–15 seconds, 1080p, audio on every clip), or contact us to be notified at launch.

How is Kling 4.0 Flash different from Kling 4.0?

Flash generates 3 to 20 seconds at 720p in 8-bit SDR, from text, a first frame or Omni Reference. Kling 4.0 goes up to 30 seconds at 1080p and adds first and last frames, up to 10 keyframes, voices and two-channel stereo audio; its video editing is coming to APIPod soon.

How long can a Kling 4.0 Flash video be?

3 to 20 seconds per generation.

What resolution does Kling 4.0 Flash output?

720p in 8-bit SDR. For 1080p, render the final version on Kling 4.0.

Which inputs does Kling 4.0 Flash accept?

Text-to-video, image-to-video from a first frame, and Omni Reference with mixed references.

Does Kling 4.0 Flash support end frames or keyframes?

No. End frames and multi-keyframe control are Kling 4.0 features; the official Flash specification lists first-frame image-to-video only.

Does Kling 4.0 Flash generate audio?

Kling AI's official Flash specification does not list audio support or reference limits yet. If you need stereo sound and lip sync, use Kling 4.0.

What's the best way to use Flash with Kling 4.0?

Explore on Flash: generate many short 720p variations of an idea. Pick the one that works, keep its prompt, first frame and references, and re-render it on Kling 4.0 at full length and resolution.

How will I call Kling 4.0 Flash on APIPod?

Send POST /v1/videos/generations with model set to kling-4.0-flash, then poll GET /v1/videos/status/{task_id} or pass a callback_url. Changing the model to kling-4.0-t2v sends the same request to the full model, which is already live.

Shoot twenty drafts before lunch.

Explore on Flash, circle the keeper, finish it on Kling 4.0.