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Mistral AI: Magistral Small 1.2

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magistral-small-1-2

Magistral Small 1.2 is Mistral AI’s open-weights AI model, released Sep 18, 2025.

Context
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Input
— / 1M
Output
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Released
Sep 18, 2025
Modalities

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where Magistral Small 1.2 lands among all models tracked on Model Beat.

13.0
Intelligence Index
Artificial Analysis
13th percentile of tracked models
22.0
Coding Index
Artificial Analysis
22nd percentile of tracked models
5.0
Agentic Index
Artificial Analysis
5th percentile of tracked models

Reasoning

3 evals
GPQA Diamond66.3%

Graduate-level scientific reasoning

Humanity's Last Exam6.1%

Frontier of human expert knowledge

MMLU-Pro76.8%

Broad expert knowledge

Coding

2 evals
LiveCodeBench72.3%

Contamination-free coding

SciCode35.2%

Scientific research coding

Math

1 evals
AIME 2024/202580.3%

Olympiad-qualifier math

Agentic & Tools

1 evals
τ²-bench27.8%

Tool-agent-user reliability

Compare Magistral Small 1.2 with

Magistral Small 1.2 vs GPT-5.6 SolMagistral Small 1.2 vs Claude Fable 5Magistral Small 1.2 vs Gemini 3.1 ProMagistral Small 1.2 vs Muse SparkMagistral Small 1.2 vs Grok 4.5

Frequently asked questions

What is Magistral Small 1.2?

Magistral Small 1.2 is an AI model, from Mistral AI, released Sep 18, 2025.

Who created Magistral Small 1.2?

Magistral Small 1.2 is an AI model developed by Mistral AI, released Sep 18, 2025.

How does Magistral Small 1.2 perform on benchmarks?

On standardized evaluations tracked by Epoch AI, Magistral Small 1.2 scores 72.3% on LiveCodeBench, 80.3% on AIME 2024/2025, 35.2% on SciCode.

Is Magistral Small 1.2 open source?

Magistral Small 1.2 is released with open weights (Open weights (unrestricted)), so the model can be downloaded and self-hosted.

Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Jul 30, 2026.