Research Release

MiniMax announces H3 with native stereo audio and planned open weights

MiniMax introduced H3, a multimodal generation model producing up to fifteen seconds of 2K video with native stereo sound, and said it would open the weights.

What happened. On 31 July 2026 MiniMax announced H3, a general-purpose multimodal generation model that takes mixed text, image, video and audio context and produces video with native stereo sound, up to fifteen seconds long at 2K resolution. The announcement emphasised unified training across tasks that used to be separate models — text-to-video, image-to-video, editing, reference — and said the company planned to release the model weights in the following days, subject to applicable regulation.

Why it matters. H3 is the base model underneath the fastest public video endpoints in this category. Its open-weights release is what allowed fal to post-train and serve H3 Max, and H3 Max in turn is what today's continuous channels run on. Native audio is also notable for live formats: a channel that can generate sound with its picture is a different product from a silent one, although none of the channels we track has yet stated that its audio is model-generated.

Which platforms it affects. Indirectly, every platform running on H3 Max. Directly, none of our listings uses the base H3 endpoint, which is why the MiniMax H3 model brief on this site is marked as a base model rather than a deployed one.

Source

Where this comes from

  1. MiniMax H3: An Open Model Breaking the Boundaries Between Tasks and Modalities
    Officially statedMiniMaxPublished 31 Jul 2026Observed Confidence: high
    “generating video with native stereo sound, up to 15 seconds at 2K resolution”

    Launch post dated 31 Jul 2026. Describes H3 as a general-purpose multimodal generation model with native stereo audio and states the intent to release open weights. fal's 27 Aug post later refers to H3 as open-weights, so the open-source flag is recorded as yes with both records attached.

    nameofficial_urldeveloper_organization_idmodel_typerelease_datesupports_native_audiois_open_source