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CEO @with_cortex | Building systems for AI to understand us beyond prompts

Palo Alto, California
Joined November 2019
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Clocks fell back an hour today, pretty sure some cron job out there ran twice xD
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Been digging into memoir apps for parents this week and a common complaint is that typing out the answers feels like homework. Then AARP's 2026 Tech Trends survey says 52% of AI users 50+ prefer typing to AI and only 14% prefer voice
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ChatGPT is really catching on with older folks. 19% of US adults 65+ say they've used it, up from 10% a year earlier and 4% in 2023 (Pew Research Center)
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Eleven v4 Turbo is basically tied with Eleven v4 on the Artificial Analysis TTS arena (1336 vs 1334 Elo) at half the price, $40 vs $80 per 1M characters. Did not expect the turbo one to come out on top
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Hot take: the first personal agent most people actually need is one that sits on hold for them
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Halloween costume idea: a voice bot that answers every trick or treater with "sorry, I didn't catch that" 😂
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Very relatable, going through what my agents did is a regular part of my week now. 47% of people in Ping Identity's 2026 survey say constantly checking an AI agent's work worries them more than it making a mistake
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Honestly I'd want my doctor explaining my test results too. 41% of AI users 50+ have asked AI a health question and only 4% have connected their medical records to it (AARP survey with NORC)
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Talking to voice agents is getting a lot less painful. Phonic 1 and Grok Voice 3.0 are basically tied at the top of the Artificial Analysis speech to speech index (87.1 and 86.9), and GPT Realtime from Aug '25 is at 69.1
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Hot take: every voice agent demo should be recorded in a loud kitchen
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Spent Friday night reading through everything my agents did this week. Half of it was great, half of it I'd never let them do again lol
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72% of AI users know about agents and 24% use one regularly (Menlo Ventures survey). Also 32% have let AI do something for them without a final ok, which is more than I expected
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Pew asked adults 65+ what they use chatbots for. 20% use them to search for info and 11% for medical advice. Companionship is 1%. Very different from the lonely senior with an AI friend story you hear a lot
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Artificial Analysis now checks if voice models say tricky stuff right. Fish Audio Drama 3 just took the top spot at 94.6%, and 34 of 35 models do worse on codes and emails than on names. I've spelled my email to a phone bot way too many times so this one hits home
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Hot take: an agent that can cancel a gym membership for you would impress me more than most agent demos
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Sunday night is when I check which of my agents actually finished what I gave them on Friday 😂
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73% of consumer ChatGPT messages were non-work by June 2025, up from 53% a year earlier (OpenAI + NBER paper). Pretty much why I care so much about personal agents
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51% of adults 50+ used a voice assistant like Alexa or Siri last year, and 80% of them say it helps them live independently at home (U Michigan poll). Makes sense, saying it out loud is a lot easier than learning a new app
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Speech to text keeps getting better. Best model on Artificial Analysis now gets 1.7% of words wrong, Whisper Large v2 is at 4.1%. Kinda love that a realtime model is on top
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Hot take: Medicare open enrollment is a better benchmark for personal agents than most evals out there
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