---
title: "Simon Willison"
type: "entity"
entity_kind: "person"
status: "hub"
canonical_name: "Simon Willison"
aliases: []
first_seen: "2026-07-12T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["OpenAI","chain-of-thought prompting","independent AI commentary","Datasette"]
seek_code_commit: "17d9798"
---


Independent software developer and writer (co-creator of the Django web
framework, creator of the Datasette and LLM open-source tools) who has built
one of the most closely-read independent blogs tracking day-to-day AI model
releases and developer-facing detail.

Matters to this vault as a named Tier-2 source: his write-up of OpenAI's o1
launch (simonwillison.net/2024/Sep/12/openai-o1/) was the sourcing basis for
[[claim-openai-hid-o1-raw-chain-of-thought-partly-for-competitive-advantage]]
at its original 2026-07-12 promotion, used because the OpenAI primary page
403'd to direct fetch at the time. A 2026-08-24 capture recovered the
primary directly, so the claim-note no longer depends on Willison's relay —
but the earlier promotion is a small case study in Tier-2 sourcing done
right: verbatim quotes carried through the relay, the interpretive gap
flagged rather than smoothed over, and the flag actually resolved once the
primary became reachable.

## References

- [[claim-openai-hid-o1-raw-chain-of-thought-partly-for-competitive-advantage]]