Norwegian startup Vegalabs hit with $17,600 Claude bill despite Azure credits

A Norwegian startup, Vegalabs AS, says it ran up a $17,600 bill using Anthropic's Claude in Microsoft Foundry after assuming its Azure credits would cover the cost. The Register reported the case on 9 October 2026. It follows a similar one in March, when third-party model charges were not covered by Azure sponsorship credits.

Vegalabs received $25,060 in Azure credits through Microsoft for Startups and deployed Claude in August, expecting its analysis workloads to draw on that balance. But Microsoft's sponsorship rules exclude Anthropic models bought through Azure Marketplace. Microsoft tried to collect $16,500 from the company's card, and the invoiced total later reached $17,600 before tax. Vegalabs says the sponsorship portal kept showing available credits while the separate Marketplace charges built up. Microsoft's Claude deployment guide says credit-only sponsored subscriptions are not supported, and that accounts with a card on file are charged on the card instead.

The company says it deleted the deployment within an hour of discovering the charges. Its card issuer declined the payment over suspected fraud, and $21,168 in unused credits expired on September 8. Vegalabs admits it did not read the credit exclusions or set a budget alert, and it does not dispute the usage or the documented rule. Its complaint is that the deployment interface did not make the separate billing clear.

Its request for a waiver then went back and forth between the two companies. Microsoft told it that Marketplace transactions run through a separate billing pipeline, so Azure Support cannot waive, refund or adjust them, and that Anthropic could initiate a refund authorization through Microsoft. Anthropic support said Microsoft did not need its authorization to process a refund and sent Vegalabs back to Microsoft. Vegalabs says four of the seven support replies it received were AI-generated, including both from Anthropic, and that they wrongly described its account as an "Azure Student Sponsorship."

Microsoft, asked for comment on October 6, only acknowledged the request. Anthropic did not respond. The Register says the case suggests the line between credit-covered services and separately billed models on the same platform needs to be clearer. For now, Vegalabs has a bill and two support teams pointing at each other.