add Azure OpenAI Responses provider with deployment-aware model mapping

packages/ai/test/total-tokens.test.ts

@@ -16,6 +16,7 @@ import { describe, expect, it } from "vitest";
 import { getModel } from "../src/models.js";
 import { complete } from "../src/stream.js";
 import type { Api, Context, Model, OptionsForApi, Usage } from "../src/types.js";
+import { hasAzureOpenAICredentials } from "./azure-utils.js";
 import { hasBedrockCredentials } from "./bedrock-utils.js";
 import { resolveApiKey } from "./oauth.js";
 
@@ -189,6 +190,27 @@ describe("totalTokens field", () => {
 		});
 	});
 
+	describe.skipIf(!hasAzureOpenAICredentials())("Azure OpenAI Responses", () => {
+		it(
+			"gpt-4o-mini - should return totalTokens equal to sum of components",
+			{ retry: 3, timeout: 60000 },
+			async () => {
+				const llm = getModel("azure-openai-responses", "gpt-4o-mini");
+				const azureDeploymentName = process.env.AZURE_OPENAI_DEPLOYMENT_NAME;
+				const azureOptions = azureDeploymentName ? { azureDeploymentName } : {};
+
+				console.log(`\nAzure OpenAI Responses / ${llm.id}:`);
+				const { first, second } = await testTotalTokensWithCache(llm, azureOptions);
+
+				logUsage("First request", first);
+				logUsage("Second request", second);
+
+				assertTotalTokensEqualsComponents(first);
+				assertTotalTokensEqualsComponents(second);
+			},
+		);
+	});
+
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 	// Google
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