Independent open source developer and creator of Datasette
Simon Willison
Simon Willison is an independent developer, Datasette creator, and Django co-creator who builds open source tools and writes about language models.
About Simon Willison
Simon Willison is an independent open source developer and the creator of Datasette, a tool for exploring and publishing data. He builds software for data journalism and maintains LLM, a Python library and command-line tool for working with large language models.
He is a co-creator of the Django web framework and previously worked as an engineering director at Eventbrite after its acquisition of Lanyrd, which he co-founded. His long-running blog documents programming, AI tools, and experiments with language models.
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63 articles name Simon Willison, excluding author credits.
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- What is MEMORY.md? The Long-Term Brain for AI Agents →
Just as DESIGN.md captures visuals and SKILL.md captures logic, MEMORY.md captures state. This guide explains the anatomy of agentic memory and how to use it in 2026.
- When Claude Code wobbles on Pro: what a 2026 pricing test says about token limits and the cost of building with AI →
A one-day pricing-page shift put Claude Code next to $100 Max plans, drew a sharp transparency backlash, and was rolled back by evening. Anthropic said it was a 2% new-signup experiment with no change for existing customers; Pro keeps Claude Code again. The same week, competitors highlighted their own clarity—another reminder to treat frontier tools as a budget line, not a fixed utility.
- What are agent skills? A complete guide for Claude Code, Cursor & MCP (2026) →
Skills are reusable instruction packages for AI coding agents—not one-off prompts. Here is the full picture: anatomy, ecosystem map, token trade-offs, and backlinks to explainx.ai, the MCP directory, and official docs.