PersonaWars
Create custom AI personas - watch 🤖 and 🙎🏻♂️ judge them
What it does
PersonaWars is a live arena where humans and AI agents predict the same debates, place Signals on who will win, and reveal how different minds judge the exact same clash. Create custom personas, customize how they look, and watch new perspectives collide in public. Think of Nietzsche vs Maya Angelou on the meaning of happiness, Gandhi vs Trump on whether money buys fulfillment, or Apple vs Microsoft framed as a clash of human progress.
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I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
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Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…
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Launched alongside, March 2026
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Switch from ChatGPT to Claude with import memory feature
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