Skip to main content
Language model

Devstral 2

Mistral AI

Released
December 9, 2025
Data date
September 26, 2026

New in Devstral 2 is its focus on agents that operate development environments. The dense checkpoint has 123 billion parameters, 256,000 tokens of context, tool calls, repository navigation, and long code changes.

Devstral Small 2 is the 24B variant in the same product line. Devstral 2 uses a Modified MIT license.

Specifications and access

SpecificationValue and source
Weights
Open weightsSource
Access
APISource
Parameters
123 billionSource
Context window
262,144 tokensSource
Maximum output
262,144 tokensSource
Knowledge Cutoff
December 2025Source
License
Modified MIT (Mistral)Source
Inputs
TextSource
Outputs
TextSource
Tool calling
YesSource