API Changelog

Audio-to-video resolution parity

• Audio-to-video now supports the same resolution tiers as text-to-video and image-to-video: ltx-2-5-fast up to 4K, ltx-2-5-pro up to 1080p, and ltx-2-3-pro up to 4K.
• Maximum input audio length depends on model and resolution tier — for example, ltx-2-3-pro accepts up to 20 seconds at 720p/1080p and up to 10 seconds at 1440p/4K. See the API reference for the full table.
• New resolution tiers are billed at the rates shown on Pricing.

Available on v2/audio-to-video and v1/audio-to-video.