Comfy H3 Sync Sound Community Challenge!

ComfyUI and MiniMax are hosting a fully virtual community challenge from August 20 to September 1, 2026, inviting participants to create videos of up to 90 seconds using MiniMax H3’s native synchronized audio and video generation within ComfyUI. Entries must include the final H3-generated video with synchronized sound and the associated ComfyUI workflow JSON, while separately adding an audio track after generation is prohibited; participants may use reference audio, external tools, and other models provided the core video and audio are generated through H3 in ComfyUI. H3 can be used locally for free on compatible hardware, including optimized support for consumer GPUs, or through credit-based Comfy Cloud, and Comfy MCP allows users to manage or adapt workflows with natural-language agents. One submission per user is permitted, entries must be lawful, safe for work, and free of unlicensed intellectual property or likenesses, and submitted workflows and outputs will be shared with the community for browsing and remixing. Prizes include an RTX 5090 for Best Overall and RTX 5060 Ti GPUs for Best Technical/Workflow, Best Creative, and an MCP-focused bonus category, with winners announced during a September 2 livestream and judged by ComfyUI, MiniMax, guest judges, and community input.

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