LTX 2.5 Fast
The speed tier of Lightricks' LTX 2.5, generating 720p video with synchronized audio from either a prompt or a still. At three credits per second it is one of the cheapest audio-capable video models on the platform, and it stretches to 20 seconds in a single generation where most models stop at 8 to 12. That combination makes it the natural workhorse for long-form b-roll, social loops, and any storyboard pass where you want to see many variations before spending on a flagship. Note that it only outputs landscape or portrait video: a reference image in any other shape is center-cropped to whichever of the two fits it best.
At a glance
- Price
- 3 Credits/sec
- Our rating
- Speed
- Very fast
What LTX 2.5 Fast is best for
How LTX 2.5 Fast performs
Strengths
- clips up to 20 seconds in one generation
- synchronized audio at a low per-second price
- accepts a start frame, an end frame, or both
Limitations
- 720p output, softer than the LTX 2.3 tiers at 1080p
- landscape and portrait only; square reference images get center-cropped
- less motion coherence than Seedance or Veo on complex action
How to prompt LTX 2.5 Fast
Practical tips to get the most out of LTX 2.5 Fast.
- 01name the camera move and the subject action separately
- 02write the audio you want to hear, including ambience and dialogue
- 03keep one continuous action per clip rather than cutting between scenes
Tips are tuned for LTX 2.5 Fast specifically.
Made with LTX 2.5 Fast
Prompt: Small chunky hippo sprinting towards the camera
Prompt: Group of elephants walking
Alternatives to LTX 2.5 Fast
Other models on Upsampler that cover similar ground.
LTX 2.3 Fast
Lightricks' fastest LTX 2.3 tier with synchronized audio. Open-weight cinematic concept iteration — describe a clip with audio cues, get a quick render with sound. Use for iteration before stepping up to LTX 2.3 Pro for final renders.
LTX 2.3 Pro
Lightricks' flagship LTX 2.3 with synchronized audio. Higher-fidelity video generation in the open-weight LTX line, with cinematic camera handling and audio sync. Strong choice for teams that want premium video quality on infrastructure they control.
P-Video
Pruna AI's production-tier video model with fast generation, built-in audio, and multi-aspect-ratio support. Optimized for cost-quality balance — solid for production workflows where the top-tier closed models (Veo, Sora) feel too expensive for the use case.
Wan 2.2 14B
Alibaba's flagship Wan 2.2 video model with crisp 480p output and strong stylization. Open-weight availability makes it useful for self-hosted pipelines and teams that want production-quality video generation without closed-API costs. Edged out by Veo, Sora, and Kling at the top tier but cost-competitive.
Frequently asked questions
What is LTX 2.5 Fast?
The speed tier of Lightricks' LTX 2.5, generating 720p video with synchronized audio from either a prompt or a still. At three credits per second it is one of the cheapest audio-capable video models on the platform, and it stretches to 20 seconds in a single generation where most models stop at 8 to 12. That combination makes it the natural workhorse for long-form b-roll, social loops, and any storyboard pass where you want to see many variations before spending on a flagship. Note that it only outputs landscape or portrait video: a reference image in any other shape is center-cropped to whichever of the two fits it best.
How much does LTX 2.5 Fast cost on Upsampler?
3 credits per second. No subscription, credits never expire.
What are alternatives to LTX 2.5 Fast?
Common alternatives: LTX 2.3 Fast, LTX 2.3 Pro, P-Video, Wan 2.2 14B.
Can I try LTX 2.5 Fast for free?
You can try a free, no-signup version of our ai video generator. Note that the free version may use a different, lighter model rather than LTX 2.5 Fast itself.