Skip to contentNewskeryx

9 October 2026

Mistral releases ML4 preview; Reflection unveils Beam, both Western open models

First reported

SCMP ran this on , a day before the other 3 sources picked it up.

  • Mistral, a French AI company, previewed ML4, a model with 49 to 52 billion active parameters, scoring 38 on Artificial Analysis's intelligence index.
  • Artificial Analysis says ML4 is the most capable model from outside the US and China, but at least five Chinese open models score higher.
  • ML4's weights are not yet public; Mistral says they are due by the end of October, and the model is currently available via API.

How it was covered

Last Week in AIAndrey Kurenkov

Mistral Large 4 (Le Chonk) and Reflection's Beam, their specs, benchmarks, and release timing

Reported by Tom's Hardware, AI Business, SCMP