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LTX 2.5 Pro Text To Video: Synced High-Fidelity Clips on Models and API | RunComfy

lightricks/ltx-2.5/text-to-video/pro

LTX 2.5 Pro Text To Video generates 720p or 1080p synced audio-video from a prompt for delivery-ready text-to-video.

Text prompt describing the video scene, motion, and audio.
Video length in seconds. Use auto to let the model choose from the prompt.
Output resolution of the generated video.
Output aspect ratio of the generated video.
Frames per second of the generated video.
Whether to generate synchronized audio with the video.
Optional camera motion preset. Leave unset for prompt-only camera direction.
Idle
The rate is $0.132 per second for 720p or $0.19 per second for 1080p. Native audio is included.

Introduction To LTX 2.5 Pro Text To Video

LTX 2.5 Pro Text To Video builds a cinematic clip with optional native audio from a written prompt in a quality-focused mode. Trading rapid draft passes for delivery-oriented fidelity, LTX 2.5 Pro Text To Video helps teams finalize look, motion, and sound from text alone. For developers, LTX 2.5 Pro Text To Video on RunComfy can be used both in the browser and via an HTTP API, so you don't need to host or scale the model yourself.
Ideal for: Prompt-led finals | Brand film concepts | Vertical campaign cuts

Parameters#


Controls on this LTX 2.5 Pro Text To Video page:


ParameterRequiredTypeDefaultRange / OptionsDescription
prompt*Yes (*)StringExample promptUp to 5,000 charactersSubject, action, camera, setting, style, and audio.
durationNoString10auto, 6, 8, 10Fixed seconds or auto for model-chosen length.
resolutionNoString1080p720p, 1080pPro delivery resolutions.
aspect_ratioNoString16:916:9, 9:16Landscape web/ads or vertical social.
fpsNoInteger2524, 25, 50Editorial cadence or smoother motion.
generate_audioNoBooleantruetrue / falseOn for synced sound; off for silent plates.
camera_motionNoString—dolly_in, dolly_out, dolly_left, dolly_right, jib_up, jib_down, static, focus_shiftOptional prescribed camera path.

  • Required field. This page has no image or audio reference inputs.

Pricing#


LTX 2.5 Pro Text To Video is billed per second of generated video. Native audio is included.


ResolutionPrice per second6s8s10s
720p$0.132$0.792$1.056$1.32
1080p$0.19$1.14$1.52$1.90

For batches, total ≈ duration × per-second rate × output count. When duration is auto, billing follows the actual generated length.

Related Models

minimax-h3-open/text-to-video

Open-weights text-to-video with 480p/768p and native stereo audio.

seedance-2.0-mini/text-to-video

Fast, low-cost multi-shot AI video model with native audio and references.

kling-2-6/motion-control-pro

Cinematic motion model for fluid scene creation and adaptive visual editing.

seedance-2.5/reference-to-video/480p

Seedance 2.5 Reference 480p: Multi-reference draft video at lower cost

ace-step/text-to-audio

Generates up to 4-minute songs with vocals and lyrics from text tags

ltx-2/fast/text-to-video

Next-gen tool turning prompts into cinematic 4K video clips with audio

Frequently Asked Questions

What is LTX 2.5 Pro Text To Video used for?

LTX 2.5 Pro Text To Video turns a written prompt into a synchronized audio-video clip in a quality-focused mode. It is ideal for locking look, motion, and sound from text when you need delivery-oriented fidelity.

How is LTX 2.5 Pro Text To Video different from the Image-to-Video Pro page?

This page is text-only: there are no image or audio reference inputs. Use LTX 2.5 Pro Text To Video for prompt-first finals, then switch to Image-to-Video Pro when a still must lock composition or identity.

What output options does LTX 2.5 Pro Text To Video provide?

You can set duration to auto or 6/8/10 seconds, resolution to 720p or 1080p, aspect ratio 16:9 or 9:16, FPS of 24/25/50, optional camera motion presets, and generate_audio on or off.

Does LTX 2.5 Pro Text To Video include native audio?

Yes. When generate_audio is enabled, picture and sound are produced together, and native audio is included in the per-second price. Disable audio for silent plates.

What prompt length should I use with LTX 2.5 Pro Text To Video?

Prompts can be up to 5,000 characters. Clear structure—subject, one main action, camera, lighting, style, and audio—usually matters more than filling the limit.

Can developers call LTX 2.5 Pro Text To Video via the RunComfy API?

Yes. Prototype settings in the RunComfy Web UI, then reuse the same LTX 2.5 Pro Text To Video parameters through the HTTP API for batch jobs and product integrations.

How much does LTX 2.5 Pro Text To Video cost on RunComfy?

Billing is per second of generated video: $0.132 at 720p and $0.19 at 1080p. Auto duration is charged by the actual generated length. Generations consume USD/credits; new users typically receive a free trial amount.

When should I choose LTX 2.5 Pro Text To Video over Fast?

Choose LTX 2.5 Pro Text To Video when you need higher-fidelity finals at 720p/1080p. Prefer Fast when you need longer clips, 4K drafts, or cheaper rapid iteration first.

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Examples Of LTX 2.5 Pro Text To Video

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