Mistral AI announced it has raised €3 billion in Series D funding at a post-money valuation exceeding €21 billion. The announcement, dated September 8, 2026, names Samsung Electronics as the lead investor, alongside co-leads Scaleup Europe Fund (managed by EQT) and existing backer PSG Equity. The company did not disclose individual check sizes or equity stakes.
Mistral stated it intends to allocate the capital toward expanding its frontier research, training compute capacity, core infrastructure, commercial growth, and international footprint.