🛠️ Building data infra for AI/ML. Ex-Data Scientist @Microsoft. Created DVC, now DataChain. PhD in CS. Serious about data. Less serious about everything else.

San Francisco, CA
Joined October 2011
Claude Code and Codex were built for weightless data. Physical AI data has mass. My talk on the other physics of agents: youtube.com/watch?v=bUJgirn4…
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This made me check my own citations. Turns out DVC has 40+ citations which is more than my PhD research Apparently, open source is a better academic strategy than academia 😄 @shcheklein @rkuprieiev @isidentical congrats, we’re academics now. Who knew?
You don’t have to publish papers to have academic citations or even an h-index. I dropped out of uni years ago 🤦‍♂️, and always wanted to contribute in different ways: open-source libraries, datasets, benchmarks, and overly long blog posts. I finally created a Google Scholar profile and started linking my GitHub repositories and articles. It turns out some academics are kind enough to cite good ideas regardless of where they come from 🫶 Scholar’s attribution machinery is hilariously basic: it split citations between GitHub and Zenodo versions, missed entire projects, and failed to connect several papers to the software or articles they explicitly reference. Nevertheless, I have already amassed a monumental h-index of 3 😂 Open-source devs, your software may already be part of the academic literature. You might even have an h-index without knowing it. Go check Google Scholar, you may be pleasantly surprised! P.S. Geoffrey Hinton’s h-index is 192. Only 189 to go.
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Coding-agent intuition breaks down on physical-world data That’s my AI Engineer World’s Fair Online Track talk this week. See you there! I’ll be the guy in the Villain-Con shirt 😄
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Claude and ChatGPT are both down. Tokenmaxing seems to work.
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Talked about data agents beyond SQL at @pydatalondon today. Files, video, sensors, metadata, Python workflows - all the messy stuff where real data work happens. Thanks everyone who came by 🙌
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Excited to speak at @PyData London this Sunday! I’ll be talking about data context for agents beyond SQL: video, sensors, files, metadata, and Python workflows. 10:15 · Hardwick Hub Conference Room Come say hi!
Tomorrow, PyData London 2026 begins. If you have your ticket, we'll see you there. If you don't have yours yet — there's still time: hubs.la/Q04jpJ3R0 - - - PyData London 2026: Convene Sancroft, St. Paul's Tutorials: Friday, June 5-7 Talks: Saturday and Sunday, June 6-7 Keynote Speakers all 3 days Tickets: hubs.la/Q04jpJ3R0
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Opus 4.8 is really smart! It spent 38 minutes implementing a pretty complex feature, proved it worked, then reverted it with a detailed explanation. So, like humans 🤷‍♂️
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3am thought: pi.dev tonight. Pretty solid, and you pick your model GPT/Opus/DeepSeek. The harness category is maturing into "bring your own model" mode. The harness IS the product now.
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Every dev-experience problem ends-up generating and executing some code, and all code is moving under a harness (Claude Code, Cursor, Codex), leaving people with text. Data platforms are next! And that's what we need to build.
🚀Code as Agent Harness: A survey work from UIUC, Stanford, and Meta. 📄arxiv.org/abs/2605.18747 Code is no longer just the output of AI. It is becoming the executable, inspectable, and stateful substrate through which AI agents reason, act, verify, remember, and self-correct over long horizons. In our new survey, we examine this shift through the lens of Code as Agent Harness, focusing on how code serves as: • 🧠 Harness Interface: coding for reasoning, acting, and environment modeling • ⚙️ Harness Mechanisms: planning, memory, tool use, feedback, and optimization • 🤝 Multi-Agent Harnesses: collaboration through shared code, tests, and execution traces We review applications spanning: 💻 Coding Agents 🖥️ GUI/OS Agents 🤖 Embodied Agents 🔬 Scientific Discovery 🏢 Enterprise Workflows If you find this survey helpful, feel free to explore our resource collection below. 🤗 Hugging Face Daily: huggingface.co/papers/2605.1… 💻 GitHub: github.com/YennNing/Awesome-… 🌍 Website: code-as-harness.github.io/co… Feedback, suggestions, and community contributions are warmly welcome! #AI #Agents #LLM #Coding #AgenticAI #SoftwareEngineering
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My productivity KPI: hit Claude's weekly limit. Anthropic doubled it. Now I'm underperforming 🫠
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OpenAI's Data Agent and the S3 Gap open.substack.com/pub/datach…
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I just started a Substack! You can subscribe to it here dmpetrov.substack.com/?r=6ix…
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Turns out "Claude Code over files in S3" quickly becomes "rebuild half the data warehouse stack" 🫠 Schemas, datasets, lineage, file refs, etc. OpenAI's Data Agent post made us feel slightly less insane 😄 Read more: datachain.ai/blog/openai-dat…
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Milla Jovovich releasing a agent memory framework wasn’t on my 2026 bingo card the Fifth Element but it stores everything instead of summarizing
Mempalace --> Multipass. Thanks to Anthropic, even Leeloo can code. github.com/milla-jovovich/me…
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