Where does the bug appear (feature/product)? Cursor IDE Describe the Bug When i’m trying to connect my Claude 4.5 sonnet deployment from azure in the Azure models i got an error Steps to Reproduce Deploy a Claude 4.5 sonnet model in Azure AI Foundry Connect the model in Cursor Settings IDE Test m…

Thanks for the logs. I can see the issue now - Cursor is showing ERROR_OPENAI and [invalid_argument] errors, which means Cursor is treating your Azure Anthropic deployment as an Azure OpenAI endpoint. The problem is that Anthropic models in Azure AI Foundry use a different API format than Azure Ope…

Request failed with status code 404: {“error”:{“code”:“404”,“message”: “Resource not found”}} [10721] Details: Endpoint = “https://{myresource}.services.ai.azure.com/anthropic/“ API Version = Not needed deployment_name= “claude-sonnet-4-5” i will give you the Azure Foundry example that runs per…

Thanks for providing those details! I noticed an important mismatch: In your Cursor settings you have: https://{myresource}.services.ai.azure.com/anthropic But in your working Python example you use: https://{myresource}.openai.azure.com/anthropic Please update your Cursor settings to use the s…

Hi! I already tried with both and it didn’t work either

Yes, there’s a problem with Sonnet 4.5. I’m having the same problem. You’re asking for a log, but this isn’t a specific problem; it’s a general one. I haven’t used it for a week. I was spending $200 a day.

Hoping to get full support for Anthropic models through Azure AI Foundry. For anybody looking for a workaround, you can use the Claude Code extension. Not the same but at least I can keep using Claude models after I hit the Cursor Pro usage limits..

Hi! @deanrie Did you added this feature request or should i do it ? Thanks for all the support btw

Hey @Gus , yes, I already passed this to the team. The team is tracking it in their backlog. Thanks for the report.

Hi! Where i can check the advances related to this?

Azure Claude 4.5 Sonnet Error

Ideas Feature Requests

Bhavya_Bhut (Bhavya Bhut) December 12, 2025, 5:58am 17

+1…

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Azure Claude 4.5 Sonnet Error

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