Microsoft has officially announced that it will discontinue its public Bing Search API service on August 11, 2025. This decision will affect all users of the service, from free users to paid ones, including all versions such as Search v7 and Custom Search.
According to Microsoft's retirement notice, after the termination date, all existing API resources will be disabled, and new user registration channels will also be closed. Microsoft has posted a prominent banner on the Bing Web Search API page to remind users of this deadline and emphasize that new deployments are no longer available.
As an alternative solution, Microsoft recommends that developers transition to the "Grounding with Bing Search" feature in Azure AI Agent Service. This feature is designed to provide real-time web data for AI agents to improve response quality. However, this strategic shift requires developers to adapt to the new service architecture, API models, and related cost structures. For specific pricing information, please refer to Microsoft's official pricing page.
It is worth noting that data processing compliance is a key issue in this transition. Microsoft Learn documentation specifically points out that search queries and resource keys will be transmitted to the Bing service, which goes beyond Azure's standard compliance boundaries. The data processing terms differ from those of Azure AI Agent Service. Although Microsoft emphasizes that only queries and resource keys are transmitted without involving terminal user-specific information, developers still need to assess whether they comply with their own compliance requirements.
Microsoft advises users to immediately review their usage of the Bing Search API and identify potentially affected resources through the Azure portal to make timely migration arrangements.