feat: update deepseek-reasoner maxTokens to 64K based on official documentation

Author: roomote

packages/types/src/providers/deepseek.ts

@@ -18,15 +18,15 @@ export const deepSeekModels = {
 		description: `DeepSeek-V3 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.`,
 	},
 	"deepseek-reasoner": {
-		maxTokens: 8192,
+		maxTokens: 65536, // 64K max output for reasoning mode
 		contextWindow: 128_000,
 		supportsImages: false,
 		supportsPromptCache: true,
 		inputPrice: 0.55, // $0.55 per million tokens (cache miss)
 		outputPrice: 2.19, // $2.19 per million tokens
 		cacheWritesPrice: 0.55, // $0.55 per million tokens (cache miss)
 		cacheReadsPrice: 0.14, // $0.14 per million tokens (cache hit)
-		description: `DeepSeek-R1 achieves performance comparable to OpenAI-o1 across math, code, and reasoning tasks. Supports Chain of Thought reasoning with up to 32K tokens.`,
+		description: `DeepSeek-R1 achieves performance comparable to OpenAI-o1 across math, code, and reasoning tasks. Supports Chain of Thought reasoning with up to 64K output tokens.`,
 	},
 } as const satisfies Record<string, ModelInfo>
 

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

@@ -154,12 +154,26 @@ describe("DeepSeekHandler", () => {
 			const model = handler.getModel()
 			expect(model.id).toBe(mockOptions.apiModelId)
 			expect(model.info).toBeDefined()
-			expect(model.info.maxTokens).toBe(8192)
+			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(65536) // deepseek-reasoner has 64K max
+			expect(model.info.contextWindow).toBe(128_000)
+			expect(model.info.supportsImages).toBe(false)
+			expect(model.info.supportsPromptCache).toBe(true)
+		})
+
 		it("should return provided model ID with default model info if model does not exist", () => {
 			const handlerWithInvalidModel = new DeepSeekHandler({
 				...mockOptions,