generated: '2026-09-17' method: searched source: registry metadata endpoints (registry.npmjs.org, pypi.org, api.nuget.org, search.maven.org, proxy.golang.org, rubygems.org, powershellgallery.com) plus the Azure CLI extension index note: >- Microsoft ships a first-party Cost Management management-plane client in every language the Azure SDK covers. Each entry below was read from that language registry's own metadata endpoint on 2026-09-17, so `version` and `published` are the registry's values, not a reading of the docs. The currency spread is the finding: the JavaScript and Python clients tracked the 2026 contract (July 2026), .NET is a year behind, Java has not shipped since December 2024, Go has not shipped since April 2023, and the Ruby gem is part of the retired azure-sdk-for-ruby generation and last moved in June 2020. A consumer picking Go or Ruby is picking a client written against an api-version several years older than the 2026-06-01 contract in openapi/_original/. packages: - name: '@azure/arm-costmanagement' registry: npm language: javascript official: true version: 1.0.0 published: '2026-07-16' url: https://www.npmjs.com/package/@azure/arm-costmanagement source: https://github.com/Azure/azure-sdk-for-js/tree/main/sdk/cost-management/arm-costmanagement description: A generated SDK for CostManagementClient. note: First stable release; supersedes the 1.0.0-beta line. Generated from the same azure-rest-api-specs contract saved in openapi/_original/. - name: azure-mgmt-costmanagement registry: pypi language: python official: true version: 5.0.0 published: '2026-07-08' url: https://pypi.org/project/azure-mgmt-costmanagement/ source: https://github.com/Azure/azure-sdk-for-python/tree/main/sdk/costmanagement/azure-mgmt-costmanagement description: Microsoft Azure Costmanagement Management Client Library for Python - name: Azure.ResourceManager.CostManagement registry: nuget language: dotnet official: true version: 1.0.3 published: '2026-04-22' url: https://www.nuget.org/packages/Azure.ResourceManager.CostManagement source: https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/costmanagement/Azure.ResourceManager.CostManagement description: Azure Resource Manager client SDK for Azure resource provider CostManagement. - name: com.azure.resourcemanager:azure-resourcemanager-costmanagement registry: maven language: java official: true version: 1.0.0 published: '2024-12-24' url: https://central.sonatype.com/artifact/com.azure.resourcemanager/azure-resourcemanager-costmanagement source: https://github.com/Azure/azure-sdk-for-java/tree/main/sdk/costmanagement/azure-resourcemanager-costmanagement note: Last published 2024-12-24 — roughly eighteen months behind the 2026-06-01 contract. - name: github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/costmanagement/armcostmanagement registry: go language: go official: true version: v1.1.1 published: '2023-04-14' url: https://pkg.go.dev/github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/costmanagement/armcostmanagement source: https://github.com/Azure/azure-sdk-for-go/tree/main/sdk/resourcemanager/costmanagement/armcostmanagement note: Read from proxy.golang.org/@latest. No release since April 2023; the strongest decay signal in this set. - name: azure_mgmt_cost_management registry: rubygems language: ruby official: true version: 0.17.1 published: '2020-06-02' url: https://rubygems.org/gems/azure_mgmt_cost_management description: Official Ruby client library to consume CostManagement note: Part of the retired azure-sdk-for-ruby generation. Last published 2020-06-02. - name: costmanagement registry: azure-cli-extension language: python official: true version: 1.0.0 published: null url: https://learn.microsoft.com/en-us/cli/azure/costmanagement source: https://github.com/Azure/azure-cli-extensions/tree/main/src/costmanagement note: >- Read from the Azure CLI extension index (azcliextensionsync.blob.core.windows.net/index1/index.json), which publishes a version and a wheel download URL but no release date field, so `published` is null — checked, nothing to record. The command surface is captured in cli/microsoft-azure-cost-management-cli.yml. - name: Az.CostManagement registry: powershellgallery language: powershell official: true version: 0.4.2 published: '2025-06-03' url: https://www.powershellgallery.com/packages/Az.CostManagement source: https://github.com/Azure/azure-powershell note: Still on a 0.x preview line after five years of the module existing. summary: package_count: 8 official_count: 8 registries: - npm - pypi - nuget - maven - go - rubygems - azure-cli-extension - powershellgallery newest_release: '2026-07-16' oldest_release: '2020-06-02'