Mistral's recent October 6, 2026 public preview of its 1-trillion-parameter Mistral Large 4 multimodal model, with open weights slated for late October, has shifted attention away from Medium updates and likely tempered near-term expectations for a 3.6+ release. The last Medium model, version 3.5, arrived in late April or May 2026 as an open-weight 128B system optimized for coding and agentic workflows. Mistral has maintained a pattern of iterative Medium refinements alongside larger flagship drops, but its emphasis on European-trained open-weight models, competitive benchmarking against Chinese leaders, and enterprise features such as long context and adjustable reasoning now centers on Large 4. Traders are watching for any post-weights developer feedback or conference signals that could accelerate the next Medium checkpoint.