Run LTX 2.3 or LTX 2.5 on your Mac.

Quick answer

Any M-series Mac can use LTX only if it has enough unified memory. At 16 GB, Kynd supports the compact LTX 2.3 int4 build at 512×320 and LTX 2.5’s one-stage tiers via the streamed engine. The Social Fast Path is proven at a conservative 13 GB envelope; the optional two-stage / refined route remains gated to larger machines.

For local video, running out of unified memory is not a gentle slowdown. Metal can abort the render. That is why Kynd gates every tier above its measured peak.

Which LTX route fits?

Choose your unified memory:

LTX 2.3 vs LTX 2.5 on Mac.

LTX 2.3 compact int4 — reach

• 18 GB model pack.
• Runs from 16 GB unified memory.
• Native ltx-2-mlx runtime.
• Draft, 576p-class and 704p-class tiers.
• Optional DubIt vocal lip-sync route.

LTX 2.5 int4 — preferred on 32 GB+

• 26 GB one-stage Kynd pack.
• 32 GB unified-memory floor.
• Native patched mlx-serve runtime.
• Text-to-video, image-to-video and generated audio.
• Experimental Ingredients reference conditioning.

Kynd also recognises the full LTX 2.3 bf16 build. It is a much larger 106 GB download and needs at least 32 GB RAM, with 48 GB required for its largest exposed tier. Kynd’s automatic choice prefers LTX 2.5 on 32 GB and larger Macs when the tested native runtime is installed.

Every LTX tier Kynd currently exposes.

The matrix reflects Kynd’s measured, conservative Metal memory gates — not theoretical minimums.

Download size and resident memory are different. The LTX 2.5 pack is about 26 GB on disk, while the exposed generation tiers peak around 24–29 GB resident. You still need free disk for the download and output files, and free unified memory for macOS.

What works today in Kynd.

Text-to-video

Shipping · LTX 2.3 + 2.5. Generate a short local take from the approved shot prompt. Kynd bounds the default LTX 2.5 route to roughly eight seconds per take.

Image-to-video

Shipping · LTX 2.3 + 2.5. Animate an accepted still so the take begins from the exact source frame instead of asking the video model to recreate it.

Generated audio

Shipping · LTX 2.5 one-stage. The complete one-stage LTX 2.5 pack includes its audio VAE and vocoder; Kynd validates that the final clip and soundtrack both arrive.

Ingredients

Experimental · LTX 2.5 · 32 GB+. Character, location and prop references are composed into a conditioning sheet and sent through Kynd’s patched native path with the official adapter.

DubIt lip sync

Optional · LTX 2.3 int4. The separately gated DubIt LoRA uses Kynd’s compact 2.3 route for vocal lip-sync work. It is not silently downloaded.

Two-stage / HQ pack

Not default · optional files excluded. The extra LTX 2.5 dev transformer and upscalers grow the repo to roughly 36 GB. Kynd’s current 26 GB install deliberately targets the complete one-stage path.

References in. Consistent local character out.

Real Kynd Ingredients path · 32 GB+ tier.

How to install and run LTX in Kynd.

1. Start with model status. In Kynd, ask the agent to check video_model_status. It reports the chip, unified memory, available tiers, installed runtime and complete model packs.
2. Ask for the exact setup. If something is missing, ask Kynd to run video_model_setup. It prints pinned commands for the runtime and only the model files Kynd needs. It does not start a surprise multi-gigabyte download.
3. Install the recommended build. Kynd recommends compact LTX 2.3 below 32 GB and LTX 2.5 int4 at 32 GB or above when its native runtime is available.
4. Open Film and choose motion. Create or open a Film board, select real generative motion, then choose Auto or an exposed quality tier. Unsupported tiers are not shown.
5. Add a source frame when identity matters. Image-to-video gives the model an exact starting composition. For LTX 2.5 Ingredients, attach named character, location and prop references to the shot.
6. Render and keep the accepted take. Kynd acquires the unified-memory lease, unloads competing chat weights, verifies the output and restores local chat after the render.

LTX on Mac FAQ.

Can a 16 GB MacBook run LTX 2.5?

Yes. The streamed low-RAM engine runs LTX 2.5’s one-stage tiers. Social is proven with a conservative 13 GB envelope; Ingredients at 768×448 remains experimental. The compact LTX 2.3 int4 build remains the lightest option.

Does an M1 Max support LTX 2.5?

Yes when configured with at least 32 GB unified memory. At 32 GB, Kynd exposes draft, balanced and Ingredients tiers. A 48 or 64 GB M1 Max also receives the 768×512 quality tier.

Is 32 GB enough for consistent local characters?

Yes. Kynd’s experimental Ingredients tier is gated at 32 GB and uses 768×448 reference geometry, provided the patched native runtime and official Ingredients adapter are both installed.

Why not expose a higher resolution on a 64 GB Mac?

Kynd exposes combinations verified against the current model/runtime path. More spare RAM does not automatically make an untested geometry reliable.

Where can I check the upstream model and adapter?

Review the current LTX model terms before use. The Ingredients path uses the official Lightricks Ingredients adapter; Kynd’s LTX 2.5 route uses the pinned MLX Serve conversion named in its setup output.

Also useful: LTX 2.5 now fits a 16 GB Mac · See the LTX 2.5 Ingredients launch · Run Z-Image locally on Mac

Latest local render

Twenty seconds. Four camera setups. One take.

Three inputs condition this render at once — a reference frame for the character, the real vocal stem frozen onto the timeline, and a prompt that names four separate camera setups. LTX 2.5 rendered all 481 frames as one continuous local take, and the song runs unbroken across every change of angle. Sound on.

The camera never travels between those positions. It is repositioned, so the picture changes instantly — while the character, the wardrobe, the van and the light hold across every change, and the mouth stays on the words in all four setups.

Social works from 16 GB upward. The current one-stage Fast Path streams transformer blocks and tile-decodes the result instead of holding the whole pipeline resident. A full-length 481-frame streamed validation peaked at 9.15 GB; Kynd ships the Social tier with a conservative 13 GB envelope and a 16 GB gate. The same model, steps and creative recipe run on 16, 24, 32 and 64 GB Macs.

Rendered with this exact pipeline

He’s singing the actual song. On a Mac.

One character reference image, one music track, one request: Kynd’s Video Studio locks the real vocal to the timeline, so the mouth follows the words — not an impression of them. Sound on.