Mistral Small 4
Mistral AI · 2026-03-16 · 119.4B parameters
Mistral Small 4 is Mistral AI's March 2026 open-weight hybrid model unifying instruction following, configurable reasoning, coding and agentic work, and text-and-image input in a single 128-expert Mixture-of-Experts checkpoint, with four experts routed per token. Mistral publishes rounded sizes of 119B total parameters and 6.5B active per token; the official model card's serving command gives the 256K context limit exactly as 262,144 tokens. The weights are released under Apache 2.0.