# Mistral Large 4 · high reasoning effort

Simon Willison tested Mistral Large 4 (1T parameter preview) in his blog post 'Introducing Mistral Large 4: Le chonk'. The model supports none and high reasoning levels on the Mistral API; the author featured the high-effort static SVG preview in the post. Compared to Mistral Large 3, this output shows significant improvement in frame geometry, pouch proportion, and pedal alignment. Archives the article's original WebP preview from static.simonwillison.net without executing unverified code; model label is source-reported and unauthenticated; date is the source publication on 2026-10-06.

- Recorded date: 2026-10-06
- Date precision: Day
- Date basis: source-publication
- Model (source label): Mistral Large 4
- Model attribution: Source-reported, not independently authenticated
- Creator / publisher: Simon Willison
- Format: Static SVG
- Prompt category: Source-documented test
- Original prompt: The source does not provide the complete per-run prompt; see the original link
- Last updated: 2026-10-05
- caseRole: case
- caseNumber: 1019
- timelineVisible: True
- datePrecision: day
- dateBasis: source-publication
- Original source: https://simonwillison.net/2026/Oct/6/le-chonk/
- Archive record: https://pelicanmap.aveniqa.com/en/specimens/simon-mistral-large-4-2026-10-06/
- Rights: Works belong to their original creators. Archiving does not change their licenses.
- Media: https://pelicanmap.aveniqa.com/media/collected/2026-10-09-october-frontier-batch/simon-mistral-large-4-high-2026-10-06.webp
  Source: https://static.simonwillison.net/static/2026-10-06/mistral-large-4-pelican.webp