Mistral Launches Small 4 MoE Model and Introduces Mistral Forge Enterprise Training Platform

Mistral AI released Mistral Small 4, a 119-parameter Mixture-of-Experts model with 128 experts and 4 active per token, benchmarked to match or surpass OpenAI's GPT-OSS 120B on long-context reasoning, live coding, and mathematics tasks. The company simultaneously launched Mistral Forge, an enterprise platform allowing organizations to train custom models on proprietary data, targeting the gap between generic foundation models and organization-specific deployments. This represents Mistral's push into the enterprise market while maintaining their focus on efficient model architectures.