Cofounder/CEO of @wandb - tools for AI developers acquired by @coreweave

Joined February 2008
283 Photos and videos
I vibe-CADed a hexapod walker entirely with claude/codex, learned the walking gait entirely in the 3d simulator, 3d printed the generated files, ordered the full BOM from amazon, assembled the thing. The fact that this is possible is amazing, but there's still some clear differences between the simulated world and reality šŸ˜€.
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I went back and reinforced the broken parts and it’s really starting to work!
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Lukas Biewald retweeted
Introducing ā€œComeback City: A Love Letter to San Francisco.ā€ Proud to call this place home.
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Lukas Biewald retweeted
.@SGRodriques left physics because "there were no unsolved problems left." So he built an AI scientist to cure every disease, solve aging, & map the human brain. New Gradient Dissent episode out now. @l2k
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Lukas Biewald retweeted
Lukas Biewald (@l2k) built Weights & Biases into the system of record for AI model training at OpenAI, Meta, NVIDIA, and 30 other foundation model builders. He also built it on ClickHouse. Now SVP of AI at CoreWeave, Lukas is joining us at Open House for a conversation on ecosystem and technology trends. Register free: clickhouse.com/openhouse/san…
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Lukas Biewald retweeted
when I find myself training models... @wandb
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OpenAI proves a surprising result on an easy to understand problem with a constructive proof involving points on a 2d plane. I feel like there should be an awesome visualization of these points but I can’t find one - has anyone made one yet?
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Lukas Biewald retweeted
May 20
We raised $250M in Series C funding at a $2.2B valuation, led by a16z. Exa is a search lab organizing the web's data for agents.
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vibe-cadding is simultaneously so amazing and so frustrating
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I love letting my six year old daughter create crazy cursor prompts and seeing what it spits out. If you find this summary intriguing, you can try the game at otto-game-browser.netlify.ap… - it did an impressive job with a tough spec
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Lukas Biewald retweeted
What happens when you post a real Monet and say it’s AI? The coolest art social experiment I’ve seen in a while. Thank you @SHL0MS
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The new Claude and OpenAI models are vastly better at physical reasoning and generating CAD files. I had them design me a mathematical chandelier and a life size hexapod walker. The assembly instructions, seem plausible, I wonder if it will work.
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Both me and my wife uploaded the same photo of a cut on my son's head and asked GPT whether or not to take him to the hospital. GPT told me it was fine to watch it and wait and told my wife he definitely needed to see a doctor immediately - in both cases confirming our prior bias. It's possible that this was just a borderline case and we randomly got different results, or that this was caused by a slight variation in our prompts. But it does make more suspicious that some artifact of the post training is causing these models to tell users what they want to hear. As the models know more and more about us, and there's more pressure to grab marketshare, this is only going to get worse. Sadly it's way more fun to have your biases confirmed.
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I used Karpathy's autoresearch pattern to optimize inference throughput overnight. The results look promising.
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Lukas Biewald retweeted
BREAKING: Meek Mill has abandoned the W&B web dashboard entirely. Says he only monitors training runs in the terminal now. "I don't need a browser to know loss is converging," sources close to the rapper confirm.
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AI coding tools are great at helping new developers ramp faster. Mike Cannon-Brookes talks about why that’s a good thing, but also why it doesn’t remove the need for experienced engineers. Someone still has to look at the code, understand it, and stand behind it. It’s a useful way to think about how teams can scale with these tools.
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All the people saying Cursor is dead clearly have not used the product recently - it’s gotten incredibly good
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Lukas Biewald retweeted
We heard you. The wandb mobile app is now LIVE on iOS šŸš€ Monitor training runs from anywhere. Crash alerts the second something breaks. Live metrics on your phone. This has been the most requested feature in wandb history and it's finally here!
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Lukas Biewald retweeted
Introducing W&B Skills for coding agents! Watch us install the skill, point it at a live fine-tuning project with thousands of traces and RL training runs, then query it all from the terminal in seconds. Also works with @weave_wb to pull in your agent traces and spot failures.
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