inclusionAI releases Duo 1.0 causal-base, a full-duplex multimodal world model initialized from MiniMax H3

inclusionAI has released the weights for Duo 1.0 causal-base on Hugging Face. The model card describes Duo as a full-duplex multimodal world model for real-time audio-visual interaction, and the repository subtitle calls it "A Reciprocal World Model for Full-Duplex Interaction."

What is in the release

The repository holds the Duo 1.0 causal-base variant as a complete model bundle. Per the model card:

• Version: Duo 1.0
• Variant: Causal base
• Package: Complete model bundle
• Weight format: PyTorch Distributed Checkpoint (DCP)
• Default sampler: Euler, 50 steps, flow shift 1.0

The bundle contains the Realization weights and backbone, the Intent model and adapter, video and audio codecs, a speech recognizer, and a forced aligner. Runtime integrations can read realization/complete.json to identify the packaged model family and weight format.

Base model and license

According to the model card, the weights were initialized from MiniMax H3 and then trained by the Duo team. Applicable terms are in the LICENSE and NOTICE files in the repository.

Access

The weights can be downloaded with hf download inclusionAI/Duo-1.0-causal-base --local-dir weights. Code, configuration and runtime-specific integration instructions are in the separate inclusionAI/Duo repository. As of November 13, 2026, no Inference Provider deploys the model on Hugging Face.

The model belongs to a Hugging Face collection that inclusionAI describes as "a modular Reciprocal World Model for full-duplex interaction." The collection has 4 items and was updated 13 minutes before the page was read. A linked paper, arXiv 2611.15131, was published two days earlier.

What this means

Duo ships as a modular system rather than a single checkpoint: the world model, intent components, codecs, speech recognizer and forced aligner are packaged together. Teams that want to run it will start from the bundle and the runtime instructions in the inclusionAI/Duo repository. With no hosted provider listed yet, local deployment from the DCP weights is the only access route shown on the model page.