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Model comparison
Veo 3.1 vs LTX-2.5 Fast
Compare Veo 3.1 and LTX-2.5 Fast 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) |
|---|---|---|
| Veo 3.1Google | $3.20 | |
| LTX-2.5 FastLightricks | Lightricks | No reviewed rate |
Quick take
Veo 3.1
Google's preview video model for text-, image-, and video-guided generation with native audio and output options up to 4K.
Best for
- Short cinematic clips with native audio
- 4K experiments and video extension
- Google-centric media pipelines
Watch out for
It remains a preview model. Regional person-generation rules, two-day server retention, and resolution/duration constraints need product-level handling.
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.
Compare the published facts
Veo 3.1 vs LTX-2.5 Fast
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 | Veo 3.1 | LTX-2.5 Fast |
|---|---|---|
| Generation priceCurrent list price per generated second or the provider's closest billing unit. | $0.40/s standard with audio | $0.09/s 720p to $0.30/s 4K |
| Clip durationDocumented duration choices or maximum clip length. | 4, 6, or 8 seconds | 6–20 seconds depending on resolution and frame rate |
| Maximum outputHighest provider-documented output resolution, with relevant constraints. | Up to 4K; 1080p/4K require 8s | 4K |
| Native audioWhether the endpoint generates synchronized audio with video. | Yes | Yes; can also generate silent video |
| Input modesSupported text, image, video, reference, or motion inputs. | Text, image, or video to video | Text, image, or audio; optional last frame and camera motion |
| Generation timeOnly shown when a provider publishes a range; not a Cody benchmark. | Official range: 11s–6m | Fast tier; exact time 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.
Veo 3.1
Google says paid Gemini API content is not used to improve its products. Generated videos are retained on the server for two days and should be downloaded during that window.
Provider and API links
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
Frequently asked questions
Veo 3.1 vs LTX-2.5 Fast FAQ
What is the main difference between Veo 3.1 and LTX-2.5 Fast?
Veo 3.1: Google's preview video model for text-, image-, and video-guided generation with native audio and output options up to 4K. 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.
Should I choose Veo 3.1 or LTX-2.5 Fast?
Consider Veo 3.1 when your priority is Short cinematic clips with native audio. Consider LTX-2.5 Fast when your priority is Fast video experiments with native audio. Test both with your own data and provider route before committing.
Is this Veo 3.1 vs LTX-2.5 Fast 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.