# Simon Willison's Weblog

Simon Willison has run [simonwillison.net](https://simonwillison.net/) since 2002 — co-creator of the Django web framework, creator of [Datasette](https://datasette.io/), and one of the more prolific everyday LLM commentators on the open web. The blog has the rare property of being both a primary source (Simon ships LLM tooling, runs experiments, publishes results) and a high-signal aggregator (link posts with one to three paragraphs of original commentary).

Topical beats:

- **LLM developments.** New model releases, prompt engineering, tool-use patterns, hallucination case studies, security issues (he coined the term "prompt injection"). Posts are usually within hours of major releases.
- **Datasette and SQLite ecosystem.** Long-running personal product line — publish-data-as-API, plugin architecture, query inspection.
- **Python and web tooling.** Working notes from his own builds.
- **Open-source governance.** Licensing arguments, attribution norms, AI policy posts (the [[simonw-zig-anti-ai|Zig anti-LLM coverage]] is in this beat).

The format that makes the blog useful is the link-with-commentary post: Simon links to a primary source, summarizes the load-bearing point in one or two paragraphs, and adds his own framing. For triaging what to read in a given week of LLM news, his archive is one of the better signals available.

URL: <https://simonwillison.net/>

## Coverage in the wiki

- [[simonw-zig-anti-ai]] — coverage of Zig's anti-LLM policy and the Bun fork situation, with Loris Cro's contributor-poker framing
- [[simonw-vibe-coding-agentic]] — Willison's 2026-05-06 admission that the vibe-coding/agentic-engineering boundary collapsed in his own practice ("I'm not reviewing that code")
- [[cheap-reverse-engineering]] — Willison's 2026-07-20 note on how cheap agent-written code flips the ROI of reverse-engineering home devices; introduces the [[disposable-code]] framing