> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs-dev.ltx.io/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs-dev.ltx.io/_mcp/server.

## LTX-2.5 square and 3:2 / 2:3 aspect ratios

* `ltx-2-5-fast` and `ltx-2-5-pro` now generate 1:1, 3:2, and 2:3 video at every resolution from 720p to 4K, on text-to-video, image-to-video, and audio-to-video.
* Pass one of the new sizes, such as `1080x1080` or `1620x1080`, in `resolution`. Each is priced the same as the 16:9 size with the same short side.

See the [LTX-2.5 resolutions](/models/ltx-2-5#resolutions) and [Pricing](/pricing).