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Model comparison
LTX-2.5 Fast vs LTX-2.3 Pro
Compare LTX-2.5 Fast and LTX-2.3 Pro using the same provider-sourced video generation rubric. No mystery score and no invented benchmark ranking.
Facts checked September 4, 2026
Estimate your cost
Set your usage. Your estimate updates as you type.
Example: 8-second, 720p clips with audio. Models that do not support these settings will not receive an estimate.
How this estimate works
Estimates exclude taxes, tools, cache storage/writes, free allowances and custom discounts. Image estimates cover output only, not prompt or reference-image charges. Quality modes differ by model. Unlisted settings are not treated as free.
| Model | Access | Estimated total (USD) |
|---|---|---|
| LTX-2.3 ProLightricks | Lightricks | No reviewed rate |
| LTX-2.5 FastLightricks | Lightricks | No reviewed rate |
Quick take
LTX-2.5 Fast
LTX's speed-optimized video model for text, image, or audio input, native sound, automatic duration, and output up to 4K.
Best for
- Fast video experiments with native audio
- Portrait or landscape output up to 4K
- Prompt-driven multi-shot clips with automatic duration
Watch out for
Fast does not mean every 4K job finishes instantly. Price grows from $0.09 to $0.30 per generated second, and permitted duration depends on resolution and frame rate.
LTX-2.3 Pro
LTX's mature full-workflow video model for generation plus Retake, Extend, Reframe, native audio, and first-to-last-frame control.
Best for
- Video pipelines that need generation and editing
- First-to-last-frame interpolation
- Retake, Extend, and Reframe workflows
Watch out for
Generation, audio-to-video, and editing endpoints do not all share one rate or limit. Pick the exact route, resolution, frame rate, and duration before comparing it with 2.5 Fast or Pro.
Compare the published facts
LTX-2.5 Fast vs LTX-2.3 Pro
Values use each provider's own published units and limits. A blank means the provider did not publish a directly comparable value in the sources reviewed.
| Video generation | LTX-2.5 Fast | LTX-2.3 Pro |
|---|---|---|
| Generation priceCurrent list price per generated second or the provider's closest billing unit. | $0.09/s 720p to $0.30/s 4K | $0.04/s 720p to $0.32/s 4K for text/image generation |
| Clip durationDocumented duration choices or maximum clip length. | 6–20 seconds depending on resolution and frame rate | Up to 20 seconds depending on route and resolution |
| Maximum outputHighest provider-documented output resolution, with relevant constraints. | 4K | 4K |
| Native audioWhether the endpoint generates synchronized audio with video. | Yes; can also generate silent video | Yes on Pro |
| Input modesSupported text, image, video, reference, or motion inputs. | Text, image, or audio; optional last frame and camera motion | Text, image, audio; first/last frame; Retake, Extend, Reframe |
| Generation timeOnly shown when a provider publishes a range; not a Cody benchmark. | Fast tier; exact time not published | Not published |
How to choose
Compare the job, not the hype.
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
LTX-2.5 Fast
The reviewed public LTX model and pricing guides do not state one complete endpoint-specific retention or training-use commitment. Verify current account and enterprise terms for sensitive media.
Provider and API links
LTX-2.3 Pro
The reviewed public LTX model and pricing guides do not state one complete endpoint-specific retention or training-use commitment. Verify current account and enterprise terms for sensitive media.
Provider and API links
Frequently asked questions
LTX-2.5 Fast vs LTX-2.3 Pro FAQ
What is the main difference between LTX-2.5 Fast and LTX-2.3 Pro?
LTX-2.5 Fast: LTX's speed-optimized video model for text, image, or audio input, native sound, automatic duration, and output up to 4K. LTX-2.3 Pro: LTX's mature full-workflow video model for generation plus Retake, Extend, Reframe, native audio, and first-to-last-frame control.
Should I choose LTX-2.5 Fast or LTX-2.3 Pro?
Consider LTX-2.5 Fast when your priority is Fast video experiments with native audio. Consider LTX-2.3 Pro when your priority is Video pipelines that need generation and editing. Test both with your own data and provider route before committing.
Is this LTX-2.5 Fast vs LTX-2.3 Pro comparison based on Cody benchmarks?
No. This comparison aligns provider-published facts for the Video generation category. It does not claim a universal winner or combine incompatible third-party benchmark scores.