# GPT-5.3 Codex · medium

The article explicitly pairs this SVG with GPT-5.3 Codex medium. The old multi-model archive was not counted as a work. This single-model entry reuses its original image without replacing the old ID, media or date. Speed recordings re-present the same work and do not count again. The date is the February 12 article publication; model and generation date are not independently authenticated.

- Recorded date: 2026-02-12
- Date precision: Day
- Date basis: source-publication
- Model (source label): GPT-5.3 Codex
- Model attribution: Source-reported, not independently authenticated
- Creator / publisher: Simon Willison
- Format: Static SVG
- Prompt category: Source-documented test
- Original prompt: Generate an SVG of a pelican riding a bicycle
- Last updated: 2026-10-02
- caseRole: case
- caseNumber: 241
- timelineVisible: True
- datePrecision: day
- dateBasis: source-publication
- parentId: x-2022057896121708735-0a187a0f
- Original source: https://simonwillison.net/2026/Feb/12/codex-spark/
- Archive record: https://pelicanmap.aveniqa.com/en/specimens/simon-gpt53-codex-medium-2026-02-12/
- Rights: Works belong to their original creators. Archiving does not change their licenses.
- Media: https://pelicanmap.aveniqa.com/media/recovered/edc44bc059934c5311e0.png
  Source: https://static.simonwillison.net/static/2026/gpt-5.3-codex-pelican.png