Simon Willison's blog offers a mix of technical tutorials, data analysis projects, and reflections on technology and society. With a focus on Python, SQL, and web development, Simon shares insights into building web applications, working with data, and exploring emerging technologies. Developers can learn about data visualization, API design, and software engineering best practices, gaining inspiration and practical knowledge to advance their careers.

Simon Willison

Notes on the February 2026 update to the official SWE-bench leaderboard, tracking how AI coding agents perform on software engineering tasks. Includes a side-quest using Claude for Chrome to redraw the leaderboard chart with percentage labels added to the bars.

Wrote up some notes on the February 2026 update to the official SWE-bench leaderboard, with a bonus side-quest to get Claude for Chrome to redraw their chart to add percentage labels to the bars https://t.co/fU6F2UM23X

<p>Wrote up some notes on the February 2026 update to the official SWE-bench leaderboard, with a bonus side-quest to get Claude for Chrome to redraw their chart to add percentage labels to the bars https://t.co/fU6F2UM23X</p>