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AI video generation with LTX-2.3 22B — text-to-video, image-to-video clips for video production.
Passed 19 of 22 test cases with the skill, and 3 of 22 without it.
and 25 more in the full report
18 fixed3 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.8-flash on 10/19/2026 did not produce a publishable comparison (not comparable). The snapshot above is the previously measured run.
One of 18 test cases the skill fixed. Same model, same prompt, with and without the skill.
I want a vintage hacker terminal video typing out '$ whoami' with glowing green pixels. It must be generated using the specialized CRT style preset. To make it dynamic, explicitly instruct the model to perform a slow dolly forward camera move.
| Checked | Without skill | With skill |
|---|---|---|
| Applies the --lora crt-terminal flag | Missed | Passed |
| Includes the phrase 'slow dolly forward' within the --prompt string | Missed | Passed |
The instructions your model reads when the skill loads.
Generate ~5 second video clips from text prompts or images using the LTX-2.3 22B DiT model.
Runs on Modal (A100-80GB). Requires MODAL_LTX2_ENDPOINT_URL in .env.
LTX-2.5 is a deploy-time opt-in on the same endpoint; see LTX-2.5 (opt-in).
# Text-to-video
uv run tools/ltx2.py --prompt "A sunset over the ocean, golden light on waves, cinematic" --output sunset.mp4
# Image-to-video (animate a still image)
uv run tools/ltx2.py --prompt "Gentle camera drift, soft ambient motion" --input photo.jpg --output animated.mp4
# Custom resolution and duration
uv run tools/ltx2.py --prompt "..." --width 1024 --height 576 --num-frames 161 --output wide.mp4
# Fast mode (fewer steps, quicker)
uv run tools/ltx2.py --prompt "..." --quality fast --output quick.mp4
# Reproducible output
uv run tools/ltx2.py --prompt "..." --seed 42 --output reproducible.mp4
| Parameter | Default | Description |
|---|---|---|
--prompt | (required) | Text description of the video |
--input | - | Input image for image-to-video |
--width | 768 | Video width (divisible by 64) |
--height | 512 | Video height (divisible by 64) |
--num-frames | 121 | Frame count, must satisfy (n-1) % 8 == 0 |
--fps | 24 | Frames per second |
--quality | standard | standard (30 steps) or fast (15 steps) |
--steps | 30 | Override inference steps directly |
--seed | random | Seed for reproducibility |
--output | auto | Output file path |
--negative-prompt | sensible default | What to avoid |
test cases passed, vs 3 / 22 without
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