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Why we built this The pipeline design Our first instinct: VLM end-to-end What we actually shipped: a three-stage chain where each model does only what it is good at Lessons from each stage YOLO + BotSORT: fast and reliable, but crops are everything MiniCPM-V 4.6: surprisingly good at CCTV, with one major catch Event structuring: the glue nobody talks about Nemotron 3 Nano 4B: fast enough, but prompting is everything Translation (TinyAya): cheaper than you'd think VoxCPM2 TTS: the fun feature that does not run on CPU The frontend decision What surprised us What we would do differently Field test — Joy Convenience Store Model and tool credits Field Notes from the Build Small Hackathon. Eyas, which stands for a small hawk, is an offline CCTV intelligence agent that turns raw footage into a structured security event log using a chain of small models: YOLO11n → MiniCPM-V 4.6 → Nemotron 3 Nano 4B → TinyAya → VoxCPM2 — all running locally with no cloud APIs.
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