At a startup and want to iterate faster and win bigger with agents? Explore our Startups tiers! https://
langchain.com/startups
AI
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LangChain Startup Tier for Faster Agent Development
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Founding Engineers Network Dinner: From Pitch Decks to Products
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Last night, we teamed up with First Commits to co-host our first dinner together for founding engineers at Penny Roma. We shared honest conversations and real stories about turning pitch decks into working products. We were joined by startups including @worktrace_ai
, @ExaAILabs
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LiteParse Web Version Built with Claude Code in One Hour
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That browser version of LiteParse is available here: https://
simonw.github.io/liteparse/ Detailed notes on how I built it using Claude Code (running for an hour) on my blog: https://
simonwillison.net/2026/Apr/23/li
teparse-for-the-web/
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Most Valuable 21st Century Skill: Knowing What to Do With AI
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The most valuable skill of the 21st century is knowing what to do with AI.
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Browser Version of LiteParse PDF Text Extraction Tool
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LiteParse is really neat! It does a great job of extracting text from annoying layouts in PDFs (multiple columns for example) It's only available as a Node.js CLI app, so I vibe-coded up this version that runs in a browser
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CORES Symposium 2026: AI and Scientific Reproducibility
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As AI in science gains momentum, this year's CORES Symposium brings together researchers and data scientists on April 29 to tackle AI's role in scientific reproducibility. The event is sold out, but you can still join the waitlist here: https://
datascience.stanford.edu/events/open-sc
ience-center/cores-annual-symposium-2026-ai-and-scientific-reproducibility
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Strategic Integration: Making AI Competitors Part of Your Ecosystem
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If you can’t bet them, have them join you.
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Claude Code Team Partnership Recognition and Collaboration
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Def worth a listen – claude code team is phenomenal, has been a blast to partner with @_catwu over the years
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Fine-Tuning Diffusion Models via Intermediate Distribution Shaping
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Fine-Tuning Diffusion Models via Intermediate Distribution Shaping paper: https://
huggingface.co/papers/2510.02
692
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Cat: The Future of AI and Product Management Leadership
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Cat = At the center of the future of AI + PM = Listen to Cat