Remove legacy DeepSeek model aliases

Author: avaritiachaos

packages/types/src/providers/deepseek.ts

@@ -6,32 +6,9 @@ import type { ModelInfo } from "../model.js"
 // continuation within the same turn. See: https://api-docs.deepseek.com/guides/thinking_mode
 export type DeepSeekModelId = keyof typeof deepSeekModels
 
-export const deepSeekDefaultModelId: DeepSeekModelId = "deepseek-chat"
+export const deepSeekDefaultModelId: DeepSeekModelId = "deepseek-v4-flash"
 
 export const deepSeekModels = {
-	"deepseek-chat": {
-		maxTokens: 8192, // 8K max output
-		contextWindow: 128_000,
-		supportsImages: false,
-		supportsPromptCache: true,
-		inputPrice: 0.28, // $0.28 per million tokens (cache miss) - Updated Dec 9, 2025
-		outputPrice: 0.42, // $0.42 per million tokens - Updated Dec 9, 2025
-		cacheWritesPrice: 0.28, // $0.28 per million tokens (cache miss) - Updated Dec 9, 2025
-		cacheReadsPrice: 0.028, // $0.028 per million tokens (cache hit) - Updated Dec 9, 2025
-		description: `DeepSeek-V3.2 (Non-thinking Mode) achieves a significant breakthrough in inference speed over previous models. It tops the leaderboard among open-source models and rivals the most advanced closed-source models globally. Supports JSON output, tool calls, chat prefix completion (beta), and FIM completion (beta).`,
-	},
-	"deepseek-reasoner": {
-		maxTokens: 8192, // 8K max output
-		contextWindow: 128_000,
-		supportsImages: false,
-		supportsPromptCache: true,
-		preserveReasoning: true,
-		inputPrice: 0.28, // $0.28 per million tokens (cache miss) - Updated Dec 9, 2025
-		outputPrice: 0.42, // $0.42 per million tokens - Updated Dec 9, 2025
-		cacheWritesPrice: 0.28, // $0.28 per million tokens (cache miss) - Updated Dec 9, 2025
-		cacheReadsPrice: 0.028, // $0.028 per million tokens (cache hit) - Updated Dec 9, 2025
-		description: `DeepSeek-V3.2 (Thinking Mode) achieves performance comparable to OpenAI-o1 across math, code, and reasoning tasks. Supports Chain of Thought reasoning with up to 8K output tokens. Supports JSON output, tool calls, and chat prefix completion (beta).`,
-	},
 	"deepseek-v4-flash": {
 		maxTokens: 384_000, // 384K max output
 		contextWindow: 1_000_000,
@@ -40,10 +17,10 @@ export const deepSeekModels = {
 		preserveReasoning: true,
 		supportsReasoningEffort: ["disable", "high", "xhigh"],
 		reasoningEffort: "high",
-		inputPrice: 0.14, // $0.14 per million tokens (cache miss) - Updated Apr 24, 2026
-		outputPrice: 0.28, // $0.28 per million tokens - Updated Apr 24, 2026
-		cacheWritesPrice: 0.14, // $0.14 per million tokens (cache miss) - Updated Apr 24, 2026
-		cacheReadsPrice: 0.0028, // $0.0028 per million tokens (cache hit) - Updated Apr 24, 2026
+		inputPrice: 0.14, // $0.14 per million tokens (cache miss) - Updated Apr 30, 2026
+		outputPrice: 0.28, // $0.28 per million tokens - Updated Apr 30, 2026
+		cacheWritesPrice: 0.14, // $0.14 per million tokens (cache miss) - Updated Apr 30, 2026
+		cacheReadsPrice: 0.0028, // $0.0028 per million tokens (cache hit) - Updated Apr 30, 2026
 		description: `DeepSeek-V4 Flash supports 1M context, 384K max output, tool calls, and thinking/non-thinking modes.`,
 	},
 	"deepseek-v4-pro": {
@@ -54,10 +31,10 @@ export const deepSeekModels = {
 		preserveReasoning: true,
 		supportsReasoningEffort: ["disable", "high", "xhigh"],
 		reasoningEffort: "high",
-		inputPrice: 0.435, // $0.435 per million tokens (cache miss) - Updated Apr 24, 2026
-		outputPrice: 0.87, // $0.87 per million tokens - Updated Apr 24, 2026
-		cacheWritesPrice: 0.435, // $0.435 per million tokens (cache miss) - Updated Apr 24, 2026
-		cacheReadsPrice: 0.003625, // $0.003625 per million tokens (cache hit) - Updated Apr 24, 2026
+		inputPrice: 0.435, // $0.435 per million tokens (cache miss, 75% off until May 31, 2026) - Updated Apr 30, 2026
+		outputPrice: 0.87, // $0.87 per million tokens (75% off until May 31, 2026) - Updated Apr 30, 2026
+		cacheWritesPrice: 0.435, // $0.435 per million tokens (cache miss, 75% off until May 31, 2026) - Updated Apr 30, 2026
+		cacheReadsPrice: 0.003625, // $0.003625 per million tokens (cache hit, 75% off until May 31, 2026) - Updated Apr 30, 2026
 		description: `DeepSeek-V4 Pro supports 1M context, 384K max output, tool calls, and thinking/non-thinking modes.`,
 	},
 } as const satisfies Record<string, ModelInfo>

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

@@ -30,8 +30,7 @@ vi.mock("openai", () => {
 						}
 
 						// Check if this is a reasoning_content test by looking at model
-						const isReasonerModel =
-							options.model?.includes("deepseek-reasoner") || options.model?.includes("deepseek-v4")
+						const isReasonerModel = options.model?.includes("deepseek-v4")
 						const isToolCallTest = options.tools?.length > 0
 
 						// Return async iterator for streaming
@@ -136,7 +135,7 @@ describe("DeepSeekHandler", () => {
 	beforeEach(() => {
 		mockOptions = {
 			deepSeekApiKey: "test-api-key",
-			apiModelId: "deepseek-chat",
+			apiModelId: "deepseek-v4-flash",
 			deepSeekBaseUrl: "https://api.deepseek.com",
 		}
 		handler = new DeepSeekHandler(mockOptions)
@@ -207,22 +206,8 @@ describe("DeepSeekHandler", () => {
 			const model = handler.getModel()
 			expect(model.id).toBe(mockOptions.apiModelId)
 			expect(model.info).toBeDefined()
-			expect(model.info.maxTokens).toBe(8192) // deepseek-chat has 8K max
-			expect(model.info.contextWindow).toBe(128_000)
-			expect(model.info.supportsImages).toBe(false)
-			expect(model.info.supportsPromptCache).toBe(true) // Should be true now
-		})
-
-		it("should return correct model info for deepseek-reasoner", () => {
-			const handlerWithReasoner = new DeepSeekHandler({
-				...mockOptions,
-				apiModelId: "deepseek-reasoner",
-			})
-			const model = handlerWithReasoner.getModel()
-			expect(model.id).toBe("deepseek-reasoner")
-			expect(model.info).toBeDefined()
-			expect(model.info.maxTokens).toBe(8192) // deepseek-reasoner has 8K max
-			expect(model.info.contextWindow).toBe(128_000)
+			expect(model.info.maxTokens).toBe(384_000)
+			expect(model.info.contextWindow).toBe(1_000_000)
 			expect(model.info.supportsImages).toBe(false)
 			expect(model.info.supportsPromptCache).toBe(true)
 		})
@@ -249,27 +234,20 @@ describe("DeepSeekHandler", () => {
 			expect(model.info).toBe(expectedInfo)
 		})
 
-		it("should have preserveReasoning enabled for deepseek-reasoner to support interleaved thinking", () => {
+		it("should have preserveReasoning enabled for DeepSeek V4 models to support interleaved thinking", () => {
 			// This is critical for DeepSeek's interleaved thinking mode with tool calls.
 			// See: https://api-docs.deepseek.com/guides/thinking_mode
 			// The reasoning_content needs to be passed back during tool call continuation
 			// within the same turn for the model to continue reasoning properly.
-			const handlerWithReasoner = new DeepSeekHandler({
+			const handlerWithV4 = new DeepSeekHandler({
 				...mockOptions,
-				apiModelId: "deepseek-reasoner",
+				apiModelId: "deepseek-v4-pro",
 			})
-			const model = handlerWithReasoner.getModel()
+			const model = handlerWithV4.getModel()
 			// Cast to ModelInfo to access preserveReasoning which is an optional property
 			expect((model.info as ModelInfo).preserveReasoning).toBe(true)
 		})
 
-		it("should NOT have preserveReasoning enabled for deepseek-chat", () => {
-			// deepseek-chat doesn't use thinking mode, so no need to preserve reasoning
-			const model = handler.getModel()
-			// Cast to ModelInfo to access preserveReasoning which is an optional property
-			expect((model.info as ModelInfo).preserveReasoning).toBeUndefined()
-		})
-
 		it("should return provided model ID with default model info if model does not exist", () => {
 			const handlerWithInvalidModel = new DeepSeekHandler({
 				...mockOptions,
@@ -442,10 +420,10 @@ describe("DeepSeekHandler", () => {
 			},
 		]
 
-		it("should handle reasoning_content in streaming responses for deepseek-reasoner", async () => {
+		it("should handle reasoning_content in streaming responses for DeepSeek V4", async () => {
 			const reasonerHandler = new DeepSeekHandler({
 				...mockOptions,
-				apiModelId: "deepseek-reasoner",
+				apiModelId: "deepseek-v4-pro",
 			})
 
 			const stream = reasonerHandler.createMessage(systemPrompt, messages)
@@ -461,10 +439,10 @@ describe("DeepSeekHandler", () => {
 			expect(reasoningChunks[1].text).toBe(" I'll analyze step by step.")
 		})
 
-		it("should pass thinking parameter for deepseek-reasoner model", async () => {
+		it("should pass thinking parameter for DeepSeek V4 models", async () => {
 			const reasonerHandler = new DeepSeekHandler({
 				...mockOptions,
-				apiModelId: "deepseek-reasoner",
+				apiModelId: "deepseek-v4-pro",
 			})
 
 			const stream = reasonerHandler.createMessage(systemPrompt, messages)
@@ -482,22 +460,6 @@ describe("DeepSeekHandler", () => {
 			)
 		})
 
-		it("should NOT pass thinking parameter for deepseek-chat model", async () => {
-			const chatHandler = new DeepSeekHandler({
-				...mockOptions,
-				apiModelId: "deepseek-chat",
-			})
-
-			const stream = chatHandler.createMessage(systemPrompt, messages)
-			for await (const _chunk of stream) {
-				// Consume the stream
-			}
-
-			// Verify that the thinking parameter was NOT passed to the API
-			const callArgs = mockCreate.mock.calls[0][0]
-			expect(callArgs.thinking).toBeUndefined()
-		})
-
 		it("should pass reasoning parameters for DeepSeek V4 models", async () => {
 			const v4Handler = new DeepSeekHandler({
 				...mockOptions,
@@ -555,7 +517,7 @@ describe("DeepSeekHandler", () => {
 		it("should handle tool calls with reasoning_content", async () => {
 			const reasonerHandler = new DeepSeekHandler({
 				...mockOptions,
-				apiModelId: "deepseek-reasoner",
+				apiModelId: "deepseek-v4-pro",
 			})
 
 			const tools: any[] = [

src/api/providers/deepseek.ts

@@ -56,7 +56,7 @@ export class DeepSeekHandler extends OpenAiHandler {
 		const { info: modelInfo, reasoning } = this.getModel()
 
 		const isDeepSeekV4Model = modelId.includes("deepseek-v4")
-		const isThinkingModel = modelId.includes("deepseek-reasoner") || isDeepSeekV4Model
+		const isThinkingModel = isDeepSeekV4Model
 		const thinkingType =
 			isDeepSeekV4Model &&
 			(this.options.reasoningEffort === "disable" || this.options.enableReasoningEffort === false)
@@ -68,9 +68,9 @@ export class DeepSeekHandler extends OpenAiHandler {
 
 		// Convert messages to R1 format (merges consecutive same-role messages)
 		// This is required for DeepSeek which does not support successive messages with the same role
-		// For thinking models (deepseek-reasoner), enable mergeToolResultText to preserve reasoning_content
-		// during tool call sequences. Without this, environment_details text after tool_results would
-		// create user messages that cause DeepSeek to drop all previous reasoning_content.
+		// For thinking models, enable mergeToolResultText to preserve reasoning_content during tool call
+		// sequences. Without this, environment_details text after tool_results would create user messages
+		// that cause DeepSeek to drop all previous reasoning_content.
 		// See: https://api-docs.deepseek.com/guides/thinking_mode
 		const convertedMessages = convertToR1Format([{ role: "user", content: systemPrompt }, ...messages], {
 			mergeToolResultText: isThinkingModel,

src/api/providers/openai.ts

@@ -106,7 +106,7 @@ export class OpenAiHandler extends BaseProvider implements SingleCompletionHandl
 		const enabledR1Format = this.options.openAiR1FormatEnabled ?? false
 		const isAzureAiInference = this._isAzureAiInference(modelUrl)
 		const isDeepSeekV4Model = modelId.includes("deepseek-v4")
-		const usesDeepSeekThinkingParam = modelId.includes("deepseek-reasoner") || isDeepSeekV4Model
+		const usesDeepSeekThinkingParam = isDeepSeekV4Model
 		const deepseekReasoner = usesDeepSeekThinkingParam || enabledR1Format
 		const deepseekThinkingType =
 			isDeepSeekV4Model &&

src/core/config/__tests__/importExport.spec.ts

@@ -2197,7 +2197,7 @@ describe("importExport", () => {
 			{
 				testCase: "supportsReasoningBudget is false",
 				providerName: "deepseek-provider",
-				modelId: "deepseek-chat",
+				modelId: "deepseek-v4-flash",
 				providerId: "deepseek-id",
 			},
 			{
@@ -2209,7 +2209,7 @@ describe("importExport", () => {
 			{
 				testCase: "both supportsReasoningBudget and requiredReasoningBudget are false",
 				providerName: "deepseek-provider-3",
-				modelId: "deepseek-reasoner",
+				modelId: "deepseek-v4-pro",
 				providerId: "deepseek-id-3",
 			},
 		])(