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Proof
An AI-native Google Docs alternative that shows what was written by AI versus humans and enables sharing.
2
sources
All mentions
Kieran
mentioned
"Dan is building Proof which is a AI native Google docs basically so you can share things with people and also you can see what was written by AI versus humans"
Attribution: Kieran mentions Dan's product Proof and expresses interest in integrating with it
"I've been working on this thing called Proof which is an agent native markdown editor. It's like a Google Docs but for agents and humans."
From:
Live Vibe Check: Testing Claude Sonnet 4.6 — Opus-Level Performance at Sonnet Pricing
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▶ 39:14
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Feb 2026
Attribution: Host explicitly states they created/built this product