Magistral is a reasoning-model family released by Mistral AI on June 10, 2025. It comprises two variants — Magistral Small, distributed with open weights, and Magistral Medium, offered commercially. Mistral positioned the family as its entry into the reasoning-model segment occupied by OpenAI's o1/o3 and DeepSeek R1 (mistral.ai).
Variants
- Magistral Small — the smaller variant, released with open weights.
- Magistral Medium — the larger and more capable variant, offered commercially.
The split follows Mistral's pattern of pairing an open-weight model with a commercial one within the same family.
Release and reception
Mistral announced Magistral on June 10, 2025 (mistral.ai). TechCrunch covered the launch under the headline "Mistral releases a pair of AI reasoning models" (2025-06-10).
The release placed Mistral, a France-based developer, among the companies offering reasoning models, a group that also includes OpenAI, Anthropic, DeepSeek, and Moonshot.
Relationships
- developer: Mistral AI
- related: OpenAI o-series (o1 → o4-mini), DeepSeek-R1, Kimi K2, Reasoning Models and Chain-of-Thought, Mistral Large / Mistral Medium / Mixtral.
Sources
- Mistral AI / Magistral announcement (2025-06-10)
- TechCrunch / Mistral releases a pair of AI reasoning models (2025-06-10)