LTX-2 19B
Lightricks
- Released
- October 2025
- Data date
- August 24, 2026
- Successor
- LTX-2.3 (Official documentation)
- Native audio
- Access
What is distinctive about LTX-2 19B is synchronous audio and video generation with open weights. Text, images, video, and audio feed its workflows; the two-stage local pipeline includes dedicated spatial and temporal upscalers for quality and frame rate.
Local runs expect English prompts, specific divisibility for dimensions and frame counts, and suitable audio guidance. Audio without speech may be lower quality. LTX-2.3 is a separate newer model in the same line.
Text-to-video and image-to-video remain separate. Their input tasks differ, so they do not receive a combined overall rank.
Methodology and source
Benchmark sources at a glance
Each evaluator measures different capabilities under its own conditions. Test series, composite indices and their components stay separate. The detailed results below retain their scales, configurations and source dates.
No active result from the reviewed external evaluators can currently be attributed to this model. Other source evidence remains available below.
Coverage is not a quality ranking. Overlapping tests and multiple settings do not count as independent experiments. Vendor claims, historical and disputed results are excluded from this overview and remain labelled in the detailed evidence.
Published benchmarks
LMArena Text to Video
Elo ratings summarize pairwise comparisons within this leaderboard. They are not percentages. The scale does not express absolute quality or linear gaps between models.
higher is betterAs of September 22, 2026Scale: 0 Elo - 1,516 Elo
Methodology and context
- Metric
- elo-rating
- Scale
- No upper bound is documented. The chart spans the recorded values and zero.
- Participants
- 22
- Sample
- 75,596
LMArena Image to Video
Elo ratings summarize pairwise comparisons within this leaderboard. They are not percentages. The scale does not express absolute quality or linear gaps between models.
higher is betterAs of September 22, 2026Scale: 0 Elo - 1,495 Elo
Methodology and context
- Metric
- elo-rating
- Scale
- No upper bound is documented. The chart spans the recorded values and zero.
- Participants
- 21
- Sample
- 262,336
Recorded measurement details
LMArena Text to Video: LMArena Text to Video (Show measurement, test conditions, and source)
- Source value
- 1154
- Score
- 1154
- Metric
- elo-rating
- Unit
- Elo
- Task
- lmarena-text-to-video
- Task label
- LMArena Text to Video
- Direction
- Higher is better
- Source rank
- 41
- Sample
- 75596
- Lower confidence bound
- 1146
- Upper confidence bound
- 1162
- Retrieved at
- 2026-09-22
LMArena Image to Video: LMArena Image to Video (Show measurement, test conditions, and source)
- Source value
- 1159
- Score
- 1159
- Metric
- elo-rating
- Unit
- Elo
- Task
- lmarena-image-to-video
- Task label
- LMArena Image to Video
- Direction
- Higher is better
- Source rank
- 45
- Sample
- 262336
- Lower confidence bound
- 1154
- Upper confidence bound
- 1164
- Retrieved at
- 2026-09-22
Video sample from our test
This video exists as a documented run for the exact model version. Playback is muted.
Motion and physical consistency
This sample tests Anatomy, object consistency, camera tracking, rain, and reflections.
Prompt and settings
Generate exactly one continuous five-second 16:9 cinematic video. A fictional bicycle courier in a mustard-yellow raincoat rides a red city bicycle from left to right across a rain-wet Hamburg street at blue hour for the entire clip. The camera tracks her smoothly at waist height. Both hands remain visible on the handlebars, the bicycle geometry stays physically correct, and a transparent umbrella fixed to the bicycle moves naturally in the wind. Wet-street reflections and raindrops follow realistic physics. No cuts, no slow motion, no text, no logos, no subtitles, and no audio.
Generated through fal.ai with model fal-ai/ltx-2-19b/text-to-video. Archived settings were 16:9, one request, first output, requested 5 s, seed 1843750023, request {"prompt":"Generate exactly one continuous five-second 16:9 cinematic video. A fictional bicycle courier in a mustard-yellow raincoat rides a red city bicycle from left to right across a rain-wet Hamburg street at blue hour for the entire clip. The camera tracks her smoothly at waist height. Both hands remain visible on the handlebars, the bicycle geometry stays physically correct, and a transparent umbrella fixed to the bicycle moves naturally in the wind. Wet-street reflections and raindrops follow realistic physics. No cuts, no slow motion, no text, no logos, no subtitles, and no audio.","video_size":"landscape_16_9","num_frames":121,"fps":24,"generate_audio":false,"use_multiscale":true,"camera_lora":"none","acceleration":"regular","guidance_scale":3,"num_inference_steps":40,"enable_prompt_expansion":false,"enable_safety_checker":true,"video_output_type":"X264 (.mp4)","video_quality":"high","video_write_mode":"balanced"}, configured price estimate $0.25.
Popularity
44.2 / 100
Published prices
- fal.ai (fal-ai/ltx-2-19b/text-to-video)
- $0.25 per request (estimated)Source
Compare this model
Show all comparisons (23)
Predecessor and successor
Sources and data date
| Type | Evidence and data date |
|---|---|
| Additional source | Lightricks · Lightricks LTX-2 model card · Editorial description reviewed October 2, 2026 |
| Additional source | fal.ai |
| Additional source | LMArena (retrieved September 22, 2026) |
| Additional source | LMArena (retrieved September 22, 2026) |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Ollama: cumulative downloads for the popularity index |
| Additional source | Replicate: cumulative runs for the popularity index |
| Additional source | Google Trending Now: limited feed selection for Germany and the US |
| Additional source | Creative Commons Attribution 4.0 |