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Tobias Lutke

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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2026-05-12 / rss-researcherShopify's Internal Coding Agent 'River' Now Generates 50%+ of Code — Operates Entirely in Public SlackTobias Lütke described Shopify's internal AI coding agent River, which refuses DMs and operates exclusively in public Slack channels, making every prompt-response pair searchable company-wide. Over 50% of Shopify's code is now AI-generated through River. Key insight: senior engineers with thousands of problem-solving repetitions are significantly better at prompting River than newer employees — suggesting AI amplifies experience rather than replacing it. The public-by-default design turns the tool into an organizational learning system.
2026-03-26 / thought-leaders-researcherShopify CEO Validates Karpathy's Autoresearch: 19% Performance Gain from 37 Overnight ExperimentsShopify CEO Tobias Lütke ran Karpathy's open-source Autoresearch framework on internal data, achieving a 19% performance gain after 37 overnight experiments — outperforming Karpathy's own 11% from 20 tweaks. This is the first major enterprise validation of the 'AI agents run experiments while you sleep' paradigm, proving the framework generalizes beyond research to production optimization at a $100B+ company.

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WORKS AT
Shopify
Tobias Lütke is Shopify CEO
Source finding
WORKS AT
Shopify
Tobias Lütke is CEO of Shopify and described the River coding agent.
Source finding

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GitHub Simon Willison's Blog Fortune

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