Hi @Albin JOYEUX ,
Mistral AI isn't a Microsoft "product". Instead Mistral AI is an independent company/third party selling Mistral Large in the Azure Marketplace.
Basically a Microsoft Sponsorship does not cover any costs of third party solutions.
Special pricing does not apply to Microsoft Azure support plans, third-party branded products, products sold through Microsoft Azure Marketplace
Reference: Microsoft Azure Sponsorship Offer - Exclusions
This means you will be charged on a Pay-As-You-Go base if you use Mistral Large. You added a credit card to the Azure Sponsorship Subscription? Than this credit card will be used.
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Regards
Andreas Baumgarten