Vegalabs says it accumulated an approximately $17,600 invoice for Claude usage through Microsoft Foundry while its Azure sponsorship portal still showed $21,168 in unused startup credits. The Norwegian software company is seeking relief from the bill, arguing that the deployment interface did not clearly distinguish Claude’s separate Marketplace billing from the models its credits covered.
Zeniteq has not independently confirmed the underlying account records. Vegalabs’ account supplies the screenshots, timeline, and descriptions of its support exchanges. The company acknowledges that it did not read the credit exclusions or configure a budget alert, and it does not dispute the model usage.
Microsoft’s published policy is clear: Anthropic models are excluded from Microsoft for Startups sponsorship credits, even when users can deploy them through Foundry. Access through Microsoft’s portal does not establish that Azure startup credits will pay for a model.
The unresolved questions concern how clearly that distinction was presented to Vegalabs and who can decide its request for a waiver.
The Credit Balance Did Not Show the Marketplace Bill
According to Vegalabs, Microsoft for Startups provided it with $25,060 in Azure credits. In August 2026, the company deployed Claude alongside GPT models it already used against that sponsorship balance.
The workload involved searching for patterns in five years of stock-exchange data, with large inputs and lengthy analyses. Vegalabs says it chose to run the experiment because it had substantial credits approaching expiration.
Its timeline places the Claude deployment on August 11 and the discovery of the separate charges on September 7. The company says it deleted the deployment within an hour of finding the bill. On September 8, its remaining $21,168 in sponsorship credits expired.
Microsoft attempted to collect roughly $16,500 from its credit card, Vegalabs reports, with the invoice subsequently reaching about $17,600 before VAT. Those dollar figures are approximate: Microsoft bills the company in Norwegian kroner, and Vegalabs converted the amounts at roughly 9.6 kroner to the dollar. Its card issuer reportedly declined the attempted payment as suspected fraud, so this should not be described as a confirmed $17,600 payment.
The screenshots, as described by Vegalabs, show two different spending views. GPT usage appeared against the sponsorship credits, while Claude did not. Marketplace costs appeared elsewhere in Azure Cost analysis, with August charges labeled “SaaS” and “global,” without identifying Claude by name. The company also says its Foundry deployment list placed Claude alongside its GPT deployments without a label identifying the separate Marketplace payment route.
