MaineCoon：22B实时音视频模型，单卡H100达47.5FPS

AI video is moving into its real-time reaction era, with MaineCoon now leading in low-latency AI video.

@catnips_ai just introduced MaineCoon, a 22B real-time text-to-audio-video model built for live AI characters, not offline video generation i.e. to make AI video feel live by generating synced speech and visuals in real time.

A record-breaking frame rate of up to 47.5 FPS on a single H100 GPU. Audio-visual generation cost drops significantly below $0.001 per second and continues to fall.

It positions the paradigm of social world models for social-interactive purposes. MaineCoon serves as the first generative core toward this paradigm and provides a technical foundation for next-generation AI-native social platforms.

It proposes a multi-stage forcing-free streaming training paradigm that includes self-resampling, cross-modal representation alignment, domain-aware preference optimization, and reinforced online-policy distillation (ROPD). These components enable 22B-scale native and efficient streaming audio-visual training.

It designs an agentic streaming inference framework that supports thousand-second-scale or even longer generation while mitigating drift through agentic cache management, chunk commitment, long-context rollout, and prompt planning.

The big deal is long-duration streaming at low cost.

Text goes in, the first frame appears in under 1s, and the model keeps producing synced video and audio while playback is already happening.

So it is not making a full video first, then dubbing it later. It generates forward in small chunks, and each chunk continues from the last one.

That is hard because tiny chunks usually break consistency. Faces drift. Voices change. Motion gets weird. Audio and mouth movement separate.

MaineCoon tries to solve this with a dual-stream Diffusion Transformer: one stream for video, one stream for audio, and cross-stream attention between them so expression, lip motion, voice, timing, and body movement stay tied together.

It also uses a history key-value cache and an attention sink. In plain words, the model keeps useful memory from previous chunks, so the next chunk does not feel like a new disconnected clip.

The speed claim is also big: up to 47.5 fps on a single H100, and real-time 30 fps on a single RTX Pro 6000 GPU. That is the low-cost part. You do not need a huge multi-GPU serving setup just to get real-time audio-video generation.

They also describe an agentic streaming system that can keep generation going for more than 10 minutes while holding identity, voice, scene state, visual quality, and synced audio. If the stream starts drifting, the system repairs future chunks instead of editing already-shown frames.

So MaineCoon is best understood as a streaming-native visual reaction layer: fast first frame, continuous audio-video output, long-horizon memory, and low inference cost.

🧵 1/n.