Microsoft revealed on Tuesday that its investing 15mn in the partnership.
Under the terms of the pact, Mistral receives access to the US tech giants supercomputers.
In return, Microsoft can offer Azure cloud customers access to the startups latest AI models.
These models have made MistralEuropes closest rivalto OpenAI another Microsoft partner.
But both deals are now under scrutiny from EU competition regulators.
According to the European Commission, the Mistral deal has joined a wider review of the generative AI sector.
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Regulators will now decide whether to launch a formal investigation.
That would have the potential to unwind the deal.
The EU must now determine whether Microsoft has acquired such rights.
During negotiations in November, Mistral lobbied to loosen rules on general-purpose AI models.
The partnership with Microsoft has triggered speculation that Mistral had ulterior motives.
Story byThomas Macaulay
Thomas is the managing editor of TNW.
He leads our coverage of European tech and oversees our talented team of writers.
Away from work, he e(show all)Thomas is the managing editor of TNW.
He leads our coverage of European tech and oversees our talented team of writers.
Away from work, he enjoys playing chess (badly) and the guitar (even worse).
