Kling 3 vs FLUX 3: Audio, Draft Mode, Price, and Duration
Direct answer: Both models support optional generated audio. Choose FLUX 3 when you need up to 20 seconds, a 720p draft option, or its current audio-without-surcharge pricing. Choose Kling 3.0 when its explicit silent-versus-audio rate structure fits a clip of up to 15 seconds. There is no declared quality winner.
Fact-checked September 14, 2026. No controlled quality test was performed. This Kling 3 vs FLUX 3 comparison uses a transparent capability rubric: customer cost, maximum duration, resolution, generated audio, draft mode, starting image, and workflow fit.
Kling 3.0 vs FLUX 3 at a glance
| Capability | Kling 3.0 | FLUX 3 |
|---|---|---|
| Customer cost | $0.168-$0.336/second, based on resolution and audio | $0.06/second in 720p draft; $0.17 normal 720p; $0.29 at 1080p |
| Maximum duration | 15 seconds | 20 seconds |
| Resolution | 720p or 1080p | 720p or 1080p |
| Generated audio | Optional, with a higher audio rate | Optional, with no current customer-price difference |
| Draft mode | No separate draft setting | Optional at 720p only |
| Starting image | One optional uploaded or saved image | One optional uploaded or saved image |
| Workflow fit | Short audio-capable clips with an explicit audio cost decision | Draft-led exploration or audio-capable clips up to 20 seconds |
Both accept a text prompt, support 16:9, 9:16, and 1:1, and allow one optional uploaded or saved starting image. The image guides the opening visual; it does not guarantee unchanged details.
Read the Kling 3.0 guide or FLUX 3 guide for one-model explanations. The pricing hub remains the source for the full cross-model rate card.
Exact five-second quotes
| Model and setting | Rate per output second | Five-second quote |
|---|---|---|
| Kling 3.0, 720p silent | $0.168 | $0.84 |
| Kling 3.0, 720p generated audio | $0.252 | $1.26 |
| Kling 3.0, 1080p silent | $0.224 | $1.12 |
| Kling 3.0, 1080p generated audio | $0.336 | $1.68 |
| FLUX 3, 720p draft | $0.06 | $0.30 |
| FLUX 3, normal 720p | $0.17 | $0.85 |
| FLUX 3, 1080p | $0.29 | $1.45 |
FLUX 3 currently has no customer-price change when generated audio is toggled. Kling 3.0 does. Every submitted generation is another charged run.
Choose by the job
Explicit silent-versus-audio budgeting: Kling 3.0
Kling 3.0 makes the audio tradeoff visible in the rate. It fits a short clip when the team wants to compare a silent quote with a generated-audio quote before submitting.
Use a concise prompt from the text-to-video guide:
Rain falls onto a neon-lit market awning, slow camera move through the walkway, steady rainfall and soft distant chatter, one continuous shot.
Draft exploration or a longer audio-capable clip: FLUX 3
FLUX 3 fits when a 720p draft is useful, when the clip may run from 15 to 20 seconds, or when generated audio should not alter the current customer quote.
A neon market walkway in gentle rain, slow forward camera movement, droplets hitting the awning with subdued crowd ambience, one continuous shot.
Use the image-to-video guide when you have an opening frame. Attach one uploaded or saved image and describe motion and sound without overloading the prompt.
Limitations and troubleshooting
| If the brief or result has this issue | Next decision |
|---|---|
| The shot needs 16-20 seconds | Use FLUX 3 if its other controls fit |
| The concept needs a low-cost draft pass | Use FLUX 3 at five seconds in 720p draft |
| Kling audio is not necessary | Turn it off and review the lower silent quote |
| The sound request is crowded | Ask for one primary sound and simple ambience |
| Starting-image details drift | Reduce motion and use a cleaner source image |
| You need a lower-cost or longer silent option | Compare Wan 3 vs Kling 3 or Wan 3 vs FLUX 3 |
These setting and price differences do not prove that one model is faster, more consistent, or visually stronger.
Access and billing before you continue
Video generation requires an active or trialing subscription. The base subscription is $6/month and includes $1 in credit; usage comes from included credit or account balance. magicdoor.ai shows the full quote before generation, up to three jobs can reserve funds concurrently, and completed videos stay in your private library until deletion.
Anonymous visitors are asked to sign in when they open the creator. Confirm duration, resolution, ratio, starting image, draft availability, generated audio, and quote before submitting.
FAQ
How do Kling 3.0 and FLUX 3 audio prices compare?
Kling 3.0 has separate silent and generated-audio rates. FLUX 3 supports optional generated audio without changing its current customer price. Five-second quotes depend on the selected resolution and mode.
Which supports longer clips, Kling 3.0 or FLUX 3?
FLUX 3 supports up to 20 seconds on magicdoor.ai, while Kling 3.0 supports up to 15 seconds. Both use 5-second duration increments.
Does Kling 3.0 or FLUX 3 have a draft mode?
FLUX 3 has a 720p draft mode at $0.06 per output second, or $0.30 for five seconds. Kling 3.0 does not expose a separate draft setting on magicdoor.ai.
Sources
Accessed September 14, 2026.
- magicdoor.ai pricing for subscription and included-credit context.
- The current magicdoor.ai video model registry and quote function for exposed controls, duration limits, draft and audio behavior, and customer prices.
- Kling 3.0 and FLUX 3 official model pages for provider capability context only. Current Magicdoor code governs customer controls and prices.
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