Mistral Small 4: 119B MoE Model with Reasoning, 256k Context, and Apache 2.0 License Matches GPT-OSS 120B

Mistral AI introduced Mistral Small 4, a Mixture of Experts model with 119B total parameters and a 256k context window, unifying capabilities from its Magistral (reasoning), Pixtral (multimodal), and Devstral (agentic coding) flagship models into a single release under Apache 2.0. The model features a configurable `reasoning_effort` parameter enabling developers to tune latency-quality tradeoffs, and matches or surpasses OpenAI's GPT-OSS 120B on long-context reasoning, live coding, and mathematics benchmarks while generating 20% less output on LiveCodeBench. Day-0 deployment on NVIDIA NIM microservices is accelerating enterprise adoption.