fix: update DeepSeek pricing to new unified rates effective Sept 5, 2025 (#7687)

- Updated deepseek-chat pricing: $0.56 input (cache miss), $0.07 (cache hit), $1.68 output
- Updated deepseek-reasoner pricing: same unified rates as deepseek-chat
- Both models now have identical pricing as per DeepSeek announcement
- Pricing takes effect at 16:00 UTC, Sept 5th, 2025

Fixes #7685

Co-authored-by: Roo Code <[email protected]>

packages/types/src/providers/deepseek.ts

@@ -11,10 +11,10 @@ export const deepSeekModels = {
 		contextWindow: 128_000,
 		supportsImages: false,
 		supportsPromptCache: true,
-		inputPrice: 0.27, // $0.27 per million tokens (cache miss)
-		outputPrice: 1.1, // $1.10 per million tokens
-		cacheWritesPrice: 0.27, // $0.27 per million tokens (cache miss)
-		cacheReadsPrice: 0.07, // $0.07 per million tokens (cache hit).
+		inputPrice: 0.56, // $0.56 per million tokens (cache miss) - Updated Sept 5, 2025
+		outputPrice: 1.68, // $1.68 per million tokens - Updated Sept 5, 2025
+		cacheWritesPrice: 0.56, // $0.56 per million tokens (cache miss) - Updated Sept 5, 2025
+		cacheReadsPrice: 0.07, // $0.07 per million tokens (cache hit) - Updated Sept 5, 2025
 		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": {
@@ -22,10 +22,10 @@ export const deepSeekModels = {
 		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)
+		inputPrice: 0.56, // $0.56 per million tokens (cache miss) - Updated Sept 5, 2025
+		outputPrice: 1.68, // $1.68 per million tokens - Updated Sept 5, 2025
+		cacheWritesPrice: 0.56, // $0.56 per million tokens (cache miss) - Updated Sept 5, 2025
+		cacheReadsPrice: 0.07, // $0.07 per million tokens (cache hit) - Updated Sept 5, 2025
 		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>