Project AURIONAI Use-Cases Research & Innovation
Mistral AI
code

Devstral 2 (123B, 2512)

Mistral open coding model; API version deprecated.

Mistral AIMistral AIFranceDevstralFamily
SWE-bench Verified chart from the Devstral 2 announcement comparing Devstral 2 with open-weight and proprietary models.
Levelmodel
Classcode
Parameters123B
Context256,000
ReleasedDec 2025
Opennessopen weights restricted
Runs onmulti-GPU node
Statusdeprecated

Benchmark Results

vendor-reported
SWE-bench Multilingualcoding
vendor-reported
61.3
050100

Score in %. Higher is better.

huggingface.co
SWE-bench Verifiedcoding
vendor-reported
72.2
050100

Score in %. Higher is better.

huggingface.co
Terminal-Bench 2.0agents and tool use
vendor-reported
32.6
050100

Score in %. Higher is better.

huggingface.co
Where this comes from
Every score names who ran it: vendor-reported, maintainer-run or independent. A rank is shown with the population it was ranked in (gap rule 3).

R&D Topics

Agentic software engineeringproduced byCode language modelsproduced by

Identity

Developer
Mistral AI
Family
Devstral
Released
Dec 2025 sourcesnotes
Weights published
–
Record checked
10 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
not in the notes
Total parameters
123B sources
Active parameters
–
Checkpoint parameters
–
Note
125B listed
Context length
256,000 tokens
Input
text
Output
text
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
open weights restricted
Licence
Modified MIT (Mistral AI) sources
Access routes
open weights download
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
multi-GPU node
Footprint
T3 estimate (unverified). Deprecated on Mistral API as of Oct 2026.
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. huggingface.co/mistralai/Devstral-2-123B-Instruct-2512 https://huggingface.co/mistralai/Devstral-2-123B-Instruct-2512
  2. Models Overview docs.mistral.ai https://docs.mistral.ai/getting-started/models/models_overview/

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Devstral 2 (123B, 2512)", https://aurion.semai.id/models/mistral-ai-devstral-2-123b-instruct-2512/, records of October 2026.