Mistral's last general-purpose Medium update, the 128B dense Medium 3.5, shipped in late April 2026 with open weights, 256K context, and strong agentic and coding benchmarks before the lab pivoted toward specialized releases and its new Large 4 flagship. As of mid-October 2026, no Medium 3.6 or successor has appeared despite five months of competitive pressure from frequent drops by peers, leaving traders focused on whether Mistral will extend the Medium line or consolidate around Large 4's trillion-parameter MoE architecture. Recent Large 4 preview announcements and promised open weights by month-end highlight resource allocation toward frontier capabilities and cybersecurity strengths, while narrower models like Magistral and Leanstral fill gaps. Key near-term catalysts include any follow-on Large updates or developer conference signals that could clarify the next Medium timeline.