Magistral Small 1.2

Claims and evidence

• Released 17 September 2025Other sources give: 18 September 2025 [3]page header date The docs model page gives September 18, 2025; the dated changelog entry, used as the value, gives September 17. ● Primary source[2]September 17 (2025)
• Deprecated 30 April 2026API deprecation; the open weights remain available. ● Primary source[4]Deprecated & retired models table, Magistral Small 1.2 [3]Deprecation date
• Retired 31 July 2026API retirement; the open weights remain available. ● Primary source[4]Deprecated & retired models table, Magistral Small 1.2

• Status AvailableApache 2.0 weights remain downloadable from Mistral AI on Hugging Face. On Mistral's API the model was deprecated on 2026-04-30 and retired on 2026-07-31. ● Primary source[1] [4]Deprecated & retired models table, Magistral Small 1.2
• Replaced by Mistral Small 4Replacement on Mistral's API. ● Primary source[4]Deprecated & retired models table, Alternative column [3]Replacement

• Successor of Magistral Small 1.1 ● Primary source[1]Updates compared with Magistral Small 1.1
• Derived from (fine tune) Mistral Small 3.2The model card says it builds on Mistral Small 3.2 (2506), with supervised fine-tuning on Magistral Medium traces followed by reinforcement learning. ● Primary source[1]introduction

• Change · Modality Adds a vision encoder, so the model accepts image input and can reason over images as well as text.Compared with Magistral Small 1.1 ● Primary source[1]Updates compared with Magistral Small 1.1
• Change · Reasoning Reasoning content is wrapped in new [THINK] and [/THINK] special tokens, and the reasoning prompt is given in the system prompt.Compared with Magistral Small 1.1 ● Primary source[1]Updates compared with Magistral Small 1.1
• Change · Other Mistral reports better LaTeX and Markdown formatting, shorter answers to easy general prompts and fewer infinite generation loops.Compared with Magistral Small 1.1 ● Primary source[1]Updates compared with Magistral Small 1.1

• Input text, image ● Primary source[3]Modalities [1]Updates compared with Magistral Small 1.1; Key Features
• Output text ● Primary source[3]Modalities
• Feature Function calling ● Primary source[3]Features: Function Calling
• Open weights YesApache 2.0. ● Primary source[1] [3]Weights
• Context window 128k tokensThe model card notes that performance might degrade past 40k tokens. ● Primary source[3]Context [1]Key Features: Context Window
• Parameters 24B ● Primary source[1]introduction
• Access API, Open-weights download ● Primary source[3]Features: API endpoints; Weights [1]

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