Add DeepSeek to the list of providers

src/shared/api.ts

@@ -8,6 +8,7 @@ export type ApiProvider =
 	| "lmstudio"
 	| "gemini"
 	| "openai-native"
+	| "deepseek"
 
 export interface ApiHandlerOptions {
 	apiModelId?: string
@@ -38,6 +39,9 @@ export interface ApiHandlerOptions {
 	openRouterUseMiddleOutTransform?: boolean
 	includeStreamOptions?: boolean
 	setAzureApiVersion?: boolean
+	deepSeekBaseUrl?: string
+	deepSeekApiKey?: string
+	deepSeekModelId?: string
 }
 
 export type ApiConfiguration = ApiHandlerOptions & {
@@ -489,6 +493,22 @@ export const openAiNativeModels = {
 	},
 } as const satisfies Record<string, ModelInfo>
 
+// DeepSeek
+// https://platform.deepseek.com/docs/api
+export type DeepSeekModelId = keyof typeof deepSeekModels
+export const deepSeekDefaultModelId: DeepSeekModelId = "deepseek-chat"
+export const deepSeekModels = {
+	"deepseek-chat": {
+		maxTokens: 8192,
+		contextWindow: 64_000,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.014,  // $0.014 per million tokens
+		outputPrice: 0.28,  // $0.28 per million tokens
+		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.`,
+	},
+} as const satisfies Record<string, ModelInfo>
+
 // Azure OpenAI
 // https://learn.microsoft.com/en-us/azure/ai-services/openai/api-version-deprecation
 // https://learn.microsoft.com/en-us/azure/ai-services/openai/reference#api-specs