fix: remove non-existent DeepSeek model aliases per API docs

- Remove deepseek-v3 and deepseek-3.2-exp from DeepSeek Direct API
  (only deepseek-chat and deepseek-reasoner are supported)
- Keep deepseek-3.2 as version alias for deepseek-chat
- Remove deepseek/deepseek-v3 test from OpenRouter (only deepseek/deepseek-v3.2 exists)
- Update documentation references to API docs

packages/types/src/providers/deepseek.ts

@@ -22,19 +22,13 @@ const deepSeekV3Info: ModelInfo = {
 
 export const deepSeekModels = {
 	"deepseek-chat": deepSeekV3Info,
-	// Aliases for DeepSeek V3 - these all map to deepseek-chat when calling the API
-	"deepseek-v3": {
-		...deepSeekV3Info,
-		description: `DeepSeek-V3 (alias for deepseek-chat). ${deepSeekV3Info.description}`,
-	},
+	// deepseek-3.2 is an alias for deepseek-chat (V3.2 is the current version)
+	// Note: The DeepSeek API only supports "deepseek-chat" and "deepseek-reasoner"
+	// See: https://api-docs.deepseek.com/quick_start/pricing
 	"deepseek-3.2": {
 		...deepSeekV3Info,
 		description: `DeepSeek V3.2 (alias for deepseek-chat). ${deepSeekV3Info.description}`,
 	},
-	"deepseek-3.2-exp": {
-		...deepSeekV3Info,
-		description: `DeepSeek V3.2 Experimental (alias for deepseek-chat). ${deepSeekV3Info.description}`,
-	},
 	"deepseek-reasoner": {
 		maxTokens: 65536, // 64K max output for reasoning mode
 		contextWindow: 128_000,
@@ -50,11 +44,10 @@ export const deepSeekModels = {
 } as const satisfies Record<string, ModelInfo>
 
 // Map of model aliases to their official API model names
-// The DeepSeek API uses specific model names, but users may use alternative names
+// The DeepSeek API only supports "deepseek-chat" and "deepseek-reasoner"
+// See: https://api-docs.deepseek.com/quick_start/pricing
 export const deepSeekModelAliases: Record<string, string> = {
-	"deepseek-v3": "deepseek-chat",
 	"deepseek-3.2": "deepseek-chat",
-	"deepseek-3.2-exp": "deepseek-chat",
 }
 
 export const DEEP_SEEK_DEFAULT_TEMPERATURE = 0.6

src/api/providers/__tests__/deepseek.spec.ts

@@ -148,25 +148,6 @@ describe("DeepSeekHandler", () => {
 			expect(OpenAI).toHaveBeenCalledWith(expect.objectContaining({ apiKey: mockOptions.deepSeekApiKey }))
 		})
 
-		it("should map deepseek-v3 alias to deepseek-chat for API calls", async () => {
-			vi.clearAllMocks()
-			const handlerWithV3 = new DeepSeekHandler({
-				...mockOptions,
-				apiModelId: "deepseek-v3",
-			})
-			const stream = handlerWithV3.createMessage("test", [])
-			for await (const _chunk of stream) {
-				// consume stream
-			}
-			// Verify the API was called with deepseek-chat (not deepseek-v3)
-			expect(mockCreate).toHaveBeenCalledWith(
-				expect.objectContaining({
-					model: "deepseek-chat",
-				}),
-				expect.anything(),
-			)
-		})
-
 		it("should map deepseek-3.2 alias to deepseek-chat for API calls", async () => {
 			vi.clearAllMocks()
 			const handlerWith32 = new DeepSeekHandler({
@@ -212,19 +193,6 @@ describe("DeepSeekHandler", () => {
 			expect(model.info.supportsPromptCache).toBe(true)
 		})
 
-		it("should return correct model info for deepseek-v3 alias", () => {
-			const handlerWithV3 = new DeepSeekHandler({
-				...mockOptions,
-				apiModelId: "deepseek-v3",
-			})
-			const model = handlerWithV3.getModel()
-			expect(model.id).toBe("deepseek-v3") // Returns user's model ID
-			expect(model.info).toBeDefined()
-			expect(model.info.maxTokens).toBe(8192) // Same as deepseek-chat
-			expect(model.info.contextWindow).toBe(128_000)
-			expect(model.info.supportsNativeTools).toBe(true)
-		})
-
 		it("should return correct model info for deepseek-3.2 alias", () => {
 			const handlerWith32 = new DeepSeekHandler({
 				...mockOptions,

src/api/providers/__tests__/openrouter.spec.ts

@@ -340,47 +340,7 @@ describe("OpenRouterHandler", () => {
 	})
 
 	describe("DeepSeek V3 Model Handling", () => {
-		it("should NOT use R1 format for DeepSeek V3 models", async () => {
-			const deepseekV3Handler = new OpenRouterHandler({
-				...mockOptions,
-				openRouterModelId: "deepseek/deepseek-v3",
-			})
-
-			const mockStream = {
-				[Symbol.asyncIterator]: async function* () {
-					yield {
-						choices: [{ delta: { content: "test" }, finish_reason: null }],
-						usage: null,
-					}
-					yield {
-						choices: [{ delta: {}, finish_reason: "stop" }],
-						usage: { prompt_tokens: 10, completion_tokens: 5 },
-					}
-				},
-			}
-
-			const mockCreate = vitest.fn().mockResolvedValue(mockStream)
-			;(OpenAI as any).prototype.chat = {
-				completions: { create: mockCreate },
-			} as any
-
-			const generator = deepseekV3Handler.createMessage("system prompt", [])
-			const chunks = []
-			for await (const chunk of generator) {
-				chunks.push(chunk)
-			}
-
-			// Verify that the messages were NOT converted to R1 format
-			expect(mockCreate).toHaveBeenCalledWith(
-				expect.objectContaining({
-					messages: expect.arrayContaining([
-						expect.objectContaining({ role: "system", content: expect.anything() }),
-					]),
-				}),
-				undefined,
-			)
-		})
-
+		// Note: OpenRouter only has deepseek/deepseek-v3.2, not deepseek/deepseek-v3
 		it("should NOT use R1 format for DeepSeek V3.2 models", async () => {
 			const deepseek32Handler = new OpenRouterHandler({
 				...mockOptions,