Model comparisons
At 720p, LTX-2 19B costs 49% less than LTX 2.3 Spicy. Only LTX-2 19B returns audio in the same file as the video.
LTX-2 19B image-to-video animates your photo into a 5 to 20 second clip with a stereo soundtrack, at 480p, 720p or 1080p in the photo's own shape. Describe the motion and the sound; billing is per second and there is no content filter.
View model details →View sample outputs →LTX 2.3 Spicy is an uncensored image-to-video build on Lightricks' LTX 2.3: your opening frame carries the content and the prompt is optional. Clips run 3 to 20 whole seconds at 480p, 720p or 1080p, with no audio field.
View model details →View sample outputs →Compare
Start with the input you have, the result you want and your budget. These are the differences that affect that choice.
Compare the published examples, then try the same input on both models with matching settings.
The Spicy Index and Freedom Score for both models, from the same daily calculation as the leaderboards.
| Measure | LTX-2 19B | LTX 2.3 Spicy |
|---|---|---|
| Spicy Index | 57.8 | 62.0 |
| Freedom Score | 76.1 | 89.2 |
| Evidence | Tested 6 of 6 probe types · 50 runs | Tested 6 of 6 probe types · 19 runs |
| Range if the rest pass | 76.1–76.1 | 89.2–89.2 |
| Price | $0.096 per 5-second clip | $0.19 per 5-second clip |
| Reviews | Read the LTX-2 19B review | Read the LTX 2.3 Spicy review |
Preliminary · limited independent quality evidence
See both on the leaderboard →Current price
A start price answers a different question than the one you have. These are the tiers both models publish, matched setting for setting, in US dollars per billed unit with no conversion step in between.
Swipe horizontally to compare all fields.
| Tier | LTX-2 19B | LTX 2.3 Spicy | Difference |
|---|---|---|---|
| 480p | $0.014 / output seconds | $0.019 / output seconds | LTX-2 19B −24% |
| 720p | $0.019 / output seconds | $0.038 / output seconds | LTX-2 19B −49% |
| 1080p | $0.029 / output seconds | $0.057 / output seconds | LTX-2 19B −49% |
Arithmetic on the published rates at each model's own default setting, not a quote. The console prices your actual settings before a request is accepted.
About this comparison
Every row here is read from the JSON Schema the endpoint validates against, so it matches what the API will really accept rather than a feature list written by hand.
Swipe horizontally to compare all fields.
| Controls and limits | LTX-2 19B | LTX 2.3 Spicy |
|---|---|---|
| Supported tasks | image-to-video | image-to-video |
| Clip length | 5–20 seconds | 3–20 seconds |
| Resolution tiers | 480p · 720p · 1080p | 480p · 720p · 1080p |
| Audio output | Yes | No |
| High-resolution tier | Yes | Yes |
| Seed | Yes | Yes |
| Execution | Submit, then poll or take the callback | Submit, then poll or take the callback |
| Request timeout | 60 minutes | 60 minutes |
| Availability | Live | Live |
Do low-filter models allow every request?
Two separate facts sit behind these labels. The first is what we do, which is nothing: no platform content filter, and no maturity flag to set on a request. The second is what each model does on its own, and that is the only part that varies between these two.
LTX-2 19B
This model declares no content filter. SpicyAPI forwards the request without adding a platform content scan; legal and consent duties remain with the customer.
LTX 2.3 Spicy
This model declares no content filter. SpicyAPI forwards the request without adding a platform content scan; legal and consent duties remain with the customer.
Usage note Only consenting adults and properly licensed material may be used. Minors, non-consensual intimate imagery, and deceptive real-person impersonation are prohibited.
Use these content labels to shortlist models, then open each model page for available examples and content-test details.
The label never changes your obligations. Age, consent, real-person likeness and the law where you operate stay with you, and SpicyAPI does not inspect each request.
Can I swap the model ID without changing the request body?
The task lifecycle is shared; the body is not. Each endpoint publishes its own JSON Schema and the API validates against that, so this is the list to reconcile before a switch.
How to choose
LTX-2 19B returns a soundtrack in the same file as the picture; the other returns picture only, so audio has to be added afterwards.
Compare
The model identifiers are lightricks/ltx-2-19b/image-to-video and lightricks/ltx-2.3-spicy/image-to-video, and both go in the same field of the same request.
Both run the same way: submit the task, then poll it or take the callback. Queueing and retry logic carry over unchanged.
Both use the same submit-and-track flow, but their required inputs may differ. Check each model page before switching.
One key, one balance, one set of spend caps. Both bill to the same account in US dollars, and the per-key daily, monthly and lifetime limits apply to whichever one you call.
Questions developers ask
LTX-2 19B is 49% cheaper at 720p, the closest like-for-like setting the two publish. Prices may change; check the estimate shown for your actual settings before submitting.
LTX-2 19B allows 60 minutes per task and LTX 2.3 Spicy allows 60. Those are ceilings rather than typical times — most requests finish far sooner — but they are what your own client timeout has to survive.
Prices and capabilities shown here come from the current public model catalogue. Check each model page for its latest inputs and examples.