SW

Simon Willison

AI Leader

Creator of Datasette & Django Co-creator @ Independent

El Cerrito, CA

British programmer, co-creator of the Django web framework, and one of the best-known software engineers experimenting with LLMs to boost productivity. Runs simonwillison.net, an influential blog offering practical analysis of LLM advancements. Built 77+ HTML/JS apps and 6+ Python apps entirely by prompting LLMs. Created the LLM command-line tool for running prompts from the terminal.

LLM ToolingPrompt EngineeringPythonAI-Assisted Development

Tools & expertise

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GitHub Mar 14, 2026

simonw pushed showboat

simonw pushed to claude/analyze-test-coverage-PZUtI in simonw/showboat · March 15, 2026 05:07 1 commit to claude/analyze-test-coverage-PZUtI e92184b

GitHub Mar 14, 2026

simonw created a branch

simonw created a branch in simonw/showboat · March 15, 2026 05:06 refs/heads/claude/analyze-test-coverage-PZUtI in simonw/showboat Updated Mar 15

Blog Mar 14, 2026

Quoting Jannis Leidel

GitHub’s slopocalypse – the flood of AI-generated spam PRs and issues – has made Jazzband’s model of open membership and shared push access untenable. Jazzband was designed for a world where the worst case was someone accidentally merging the wrong PR. In a world where only 1 in...

GitHub Mar 14, 2026

simonw pushed tools

simonw pushed to main in simonw/tools · March 15, 2026 02:34 1 commit to main bf0b1ef #254)

GitHub Mar 14, 2026

simonw contributed to simonw/tools

simonw merged simonw/tools#254 · March 14, 2026 11:34 Add link handling to rich-text-to-markdown #254 Convert text elements to text markdown https://claude.ai/code/session_018q9Arxy2HrpsyNB13wpwxQ +72 -4

GitHub Mar 14, 2026

simonw pushed tools

simonw pushed to claude/add-link-handling-5YoaC in simonw/tools · March 15, 2026 02:32 1 commit to claude/add-link-handling-5YoaC 15ee9a4

GitHub Mar 14, 2026

simonw created a branch

simonw created a branch in simonw/tools · March 15, 2026 02:30 refs/heads/claude/add-link-handling-5YoaC in simonw/tools Updated Mar 15

Blog Mar 14, 2026

My fireside chat about agentic engineering at the Pragmatic Summit

I was a speaker last month at the Pragmatic Summit in San Francisco, where I participated in a fireside chat session about Agentic Engineering hosted by Eric Lui from Statsig. The video is available on YouTube. Here are my highlights from the conversation. Stages of AI adoption...

GitHub Mar 14, 2026

simonw pushed research

simonw pushed to main in simonw/research · March 14, 2026 12:34 1 commit to main 36f1263

GitHub Mar 14, 2026

simonw contributed to simonw/research

simonw merged simonw/research#94 · March 13, 2026 21:34 csrf-protection-demo: demonstrate modern CSRF defenses using Sec-Fetch-Site headers #94 Clone https://gist.github.com/b7fb3dcc34571f3568d7f67f1ebe31aa.git to /tmp and read both markdown files Then create a demo app in...

Content & resources

Notable quotes

"I've built 77+ tools entirely by prompting LLMs. Several new prototypes added per week."

— simonwillison.net