Devstral 2 (123B)

Parameters

123B

Published

Dec 9, 2025

Devstral 2 (123B) is an AI model developed by Mistral AI (France), first published in December 2025. It works in the language domain, on tasks such as language modeling/generation and coding.

Epoch AI has no training-compute estimate for this model. The model has 123,000,000,000 parameters.

Access: Open weights (restricted use). Its weights are openly available. Epoch AI rates the confidence of this record as likely.

Full record

Organization: Mistral AI
Country of organization: France
Domain: Language
Task: Language modeling/generation, Coding
Parameters: 123,000,000,000
Model accessibility: Open weights (restricted use)
Open weights: Yes
Epoch confidence: Likely