Azure showed $21k in startup credits. Claude in Foundry billed our card $17k (vegalabs.no)

Vegalabs AS, a small software company in Norway, recently faced unexpected charges of approximately $17,600 for using Claude, an AI model, on Microsoft’s Foundry platform despite having $21,000 in startup credits. The incident highlighted a critical issue within Microsoft's credit system, as several other startups reported similar billing problems since March 2026. Although Microsoft has updated its documentation, the existing user interface did not clearly distinguish between credit-eligible and Marketplace products, leading to confusion about charges. This situation is significant for the AI/ML community as it underscores the need for clearer billing practices and governance in startup credits. The lack of transparency during deployment—where users were unaware that certain models like Claude would incur charges to their credit cards—has raised concerns about the usability of Microsoft's startup offerings. Vegalabs has called for both Microsoft and Anthropic, Claude’s publisher, to take accountability, amend their billing processes, and clarify communication, especially for startups relying on these tools for experimentation and development.