Kling O3 Pro Text to Video: write the sound into the prompt (3s, 4s, 5s, 70cr)

Q: Does this need an image?

No. `requires_image` is false. If you have a locked still, use an image-to-video sibling instead of re-describing the picture.

Kling O3 Pro Text to Video has native audio. A silent prompt still gets a soundtrack you did not choose. The catalog description: “Kling O3 Pro text-to-video with reasoning-enhanced generation, camera controls, and audio.” Audio is on. No image required. Durations run 3s through 15s. Credits: 70. Resolution is not listed on this record. Category is text-to-video.

Kling O3 Pro Text to Video will fill the bed. Room tone, score, Foley, a line of dialogue you never wrote — something. If you wanted mute B-roll, say no music, no speech, or you will spend 70 credits on a clip you mute in the editor. If you wanted a line, write the line. Native audio is not a gift you open later. It is part of the generate.

Reasoning and camera are still a prompt

Features: text_to_video, reasoning_enhanced, camera_control, audio_generation. Camera control is not a hidden rig. Name the move: locked tripod, slow push-in, handheld is forbidden, orbit stops at three-quarter. Reasoning-enhanced means a sloppy paragraph gets interpreted, not that a sloppy paragraph gets better taste. A vague “cinematic product video” still summons a cousin of your SKU.

Aspect ratios are 16:9, 9:16, and 1:1. That is a shorter list than many scene models. If you need 4:3 or 21:9, this is the wrong row or you will crop and lose the head. Generate the ratio you will ship.

No resolution token is on the record. Do not write “4K” into a blog as a spec this row does not list. If delivery is 4K, check a 4K-listed model or upscale after lock. The 70-credit sticker is paying for the O3 Pro text-to-video pass — reasoning, camera, audio — not for a resolution badge that is not here.

The Kling roster is large. The ranked pick is best Kling model. Versely vs Kling is the app-versus-studio question. This page is one endpoint.

70 credits buys the first beat. 15s is a decision.

Durations: 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s. The price matrix on the record prices a base of 70 credits for the first 5s and 14 credits for each extra second. That is why 3s, 4s, and 5s are the honest start, and why 15s is not a casual “why not.” A silent-prompt 15-second take is a long soundtrack you did not cast.

Native audio is listed among the models that actually generate a bed. The ranked list is best model with audio. Use O3 Pro text-to-video when the scene can be invented from words and you are willing to direct the sound. Use Kling O3 Pro image-to-video when frame one already exists. Do not pay the 70-credit text row to re-describe a still you own.

Write sound as if it will be in the file, because it will:

Dialogue in quotes, language named
Room: office HVAC, street wash, none
Music: none / low pulse / diegetic radio — not “epic”
What must stay mute: product taps only, no voice

If the mouth must match a track you already recorded, this is not a lipsync row. Generate the scene mute (you asked for mute), then run a lipsync model on the plate. A native-audio generate that talked over your script is 70 credits of argument.

Pick this row for the job, not for the O3 logo

The generate door is the AI video generator. The hosted-app switcher is a Kling alternative. Stay on this row when the shot is text-to-video, 3s–15s, native audio welcome, camera named, no still required. Leave it when you have a reference stack, a driving dance clip, or a 4K-listed spec this record does not carry.

70 credits is premium on purpose. A 5-credit still plus a cheaper image-to-video is sometimes the adult pipeline. O3 Pro text-to-video is for the scene that does not exist as a picture yet and should arrive with a bed you directed. Write the sound. Then press generate.

FAQ

What happens if I do not mention audio?

You still get a soundtrack you did not choose. Audio is on for this row. Direct it or you will replace it later and wonder why the 70 credits felt loud.

Does this need an image?

No. requires_image is false. If you have a locked still, use an image-to-video sibling instead of re-describing the picture.

How long can a clip be?

3s through 15s. The catalog sticker is 70 credits; the price matrix adds 14 credits per second after the first 5s. Start at 3s–5s.

Is this 4K?

No resolution is listed on this record. Do not treat O3 Pro text-to-video as a 4K row. If 4K is the spec, pick a model that lists it or upscale after you lock the take.