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Mistral AI Launches Forge to Help Companies Build Proprietary AI Models, Challenging Cloud Giants

Mistral AI unveiled Forge, an enterprise‑grade model training platform that lets organizations build, fine‑tune, and continuously improve AI models using their own proprietary data. The service covers the full training lifecycle—from pre‑training on large internal datasets to reinforcement‑learning alignment—running on Mistral’s compute, customer‑owned clusters, or on‑premise hardware. Pricing is license‑based, with optional data‑pipeline services and forward‑deployed AI scientists, differentiating it from cloud‑only offerings. The launch follows a week of product releases, including the Small 4 model, Leanstral code agent, and Mistral’s entry into Nvidia’s Nemotron coalition, signaling a push to become the infrastructure backbone for custom AI.