Mistral AI · Mistral AI
Mistral Small 4
ActiveUnified open-weight (Apache 2.0) small model combining configurable reasoning, vision and agentic coding; MoE 119B total / ~6B active.
About this version
Mistral Small 4 is the latest active release in the Mistral family, launched on 1 March 2026 as a fast‑tier model. It is an open‑weight (Apache 2.0) small model that unifies configurable reasoning, vision and agentic coding capabilities, employing a mixture‑of‑experts architecture with roughly 119 billion parameters in total but about 6 billion actively used per inference, and supports a context window of up to 128 000 tokens.
- API string
- mistral-small-4
- Context window
- 128K ctx
- Tier
- Fast
- Released
- Mar 1, 2026
Release & change timeline
1 event- Release
Mistral Small 4 released
Unified reasoning+vision+coding open-weight model (Apache 2.0); MoE 119B total / ~6B active. Replaced Mistral Small 3.
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