Product Launchmixture of expertsmultimodalmistrallean4
Mistral Releases Mistral Small 4 Model
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March 16, 2026 — Mistral released Mistral Small 4, an Apache-2 licensed 119B-parameter Mixture-of-Experts model with a 6B active expert configuration that unifies reasoning, multimodal, and agentic coding capabilities. The model supports reasoning_effort="none" or "high", is available as a 242GB upload on Hugging Face, and Mistral also published Leanstral, a Lean 4–focused open-weight model.
Scoring Rationale
High-impact, actionable release with open MoE weights and multimodal/agentic consolidation; limited documentation and shallow initial coverage reduce certainty.
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