feat: add alibaba-coding-plan provider support (#295)

packages/pi-ai/src/env-api-keys.ts

@@ -122,6 +122,7 @@ export function getEnvApiKey(provider: any): string | undefined {
 		opencode: "OPENCODE_API_KEY",
 		"opencode-go": "OPENCODE_API_KEY",
 		"kimi-coding": "KIMI_API_KEY",
+		"alibaba-coding-plan": "ALIBABA_API_KEY",
 	};
 
 	const envVar = envMap[provider];

packages/pi-ai/src/models.generated.ts

@@ -13384,4 +13384,142 @@ export const MODELS = {
 			maxTokens: 131072,
 		} satisfies Model<"openai-completions">,
 	},
+	"alibaba-coding-plan": {
+		"qwen3.5-plus": {
+			id: "qwen3.5-plus",
+			name: "Qwen3.5 Plus",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 1000000,
+			maxTokens: 65536,
+		} satisfies Model<"anthropic-messages">,
+		"qwen3-max-2026-01-23": {
+			id: "qwen3-max-2026-01-23",
+			name: "Qwen3 Max 2026-01-23",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 32768,
+		} satisfies Model<"anthropic-messages">,
+		"qwen3-coder-next": {
+			id: "qwen3-coder-next",
+			name: "Qwen3 Coder Next",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 65536,
+		} satisfies Model<"anthropic-messages">,
+		"qwen3-coder-plus": {
+			id: "qwen3-coder-plus",
+			name: "Qwen3 Coder Plus",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: false,
+			input: ["text"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 1000000,
+			maxTokens: 65536,
+		} satisfies Model<"anthropic-messages">,
+		"MiniMax-M2.5": {
+			id: "MiniMax-M2.5",
+			name: "MiniMax M2.5",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 196608,
+			maxTokens: 24576,
+		} satisfies Model<"anthropic-messages">,
+		"glm-5": {
+			id: "glm-5",
+			name: "GLM-5",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 202752,
+			maxTokens: 16384,
+		} satisfies Model<"anthropic-messages">,
+		"glm-4.7": {
+			id: "glm-4.7",
+			name: "GLM-4.7",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: true,
+			input: ["text"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 202752,
+			maxTokens: 16384,
+		} satisfies Model<"anthropic-messages">,
+		"kimi-k2.5": {
+			id: "kimi-k2.5",
+			name: "Kimi K2.5",
+			api: "anthropic-messages",
+			provider: "alibaba-coding-plan",
+			baseUrl: "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic",
+			reasoning: true,
+			input: ["text", "image"],
+			cost: {
+				input: 0,
+				output: 0,
+				cacheRead: 0,
+				cacheWrite: 0,
+			},
+			contextWindow: 262144,
+			maxTokens: 32768,
+		} satisfies Model<"anthropic-messages">,
+	},
 } as const;

packages/pi-ai/src/providers/anthropic.ts

@@ -452,6 +452,9 @@ export const streamAnthropic: StreamFunction<"anthropic-messages", AnthropicOpti
 			for (const block of output.content) delete (block as any).index;
 			output.stopReason = options?.signal?.aborted ? "aborted" : "error";
 			output.errorMessage = error instanceof Error ? error.message : JSON.stringify(error);
+			if (model.provider === "alibaba-coding-plan") {
+				output.errorMessage = `[alibaba-coding-plan] ${output.errorMessage}`;
+			}
 			if (error instanceof Anthropic.APIError && error.headers) {
 				const retryAfterMs = extractRetryAfterMs(error.headers, error.message);
 				if (retryAfterMs !== undefined) {
@@ -583,8 +586,10 @@ function createClient(
 		return { client, isOAuthToken: false };
 	}
 
-	const betaFeatures = ["fine-grained-tool-streaming-2025-05-14"];
+	// Skip beta headers for providers that don't support them (e.g., Alibaba Coding Plan)
-	if (needsInterleavedBeta) {
+	const skipBetaHeaders = model.provider === "alibaba-coding-plan";
+	const betaFeatures = skipBetaHeaders ? [] : ["fine-grained-tool-streaming-2025-05-14"];
+	if (needsInterleavedBeta && !skipBetaHeaders) {
 		betaFeatures.push("interleaved-thinking-2025-05-14");
 	}
 
@@ -599,7 +604,7 @@ function createClient(
 				{
 					accept: "application/json",
 					"anthropic-dangerous-direct-browser-access": "true",
-					"anthropic-beta": `claude-code-20250219,oauth-2025-04-20,${betaFeatures.join(",")}`,
+					...(betaFeatures.length > 0 ? { "anthropic-beta": `claude-code-20250219,oauth-2025-04-20,${betaFeatures.join(",")}` } : {}),
 					"user-agent": `claude-cli/${claudeCodeVersion}`,
 					"x-app": "cli",
 				},
@@ -612,15 +617,18 @@ function createClient(
 	}
 
 	// API key auth
+	// Alibaba Coding Plan uses Bearer token auth instead of x-api-key
+	const isAlibabaProvider = model.provider === "alibaba-coding-plan";
 	const client = new Anthropic({
-		apiKey,
+		apiKey: isAlibabaProvider ? null : apiKey,
+		authToken: isAlibabaProvider ? apiKey : undefined,
 		baseURL: model.baseUrl,
 		dangerouslyAllowBrowser: true,
 		defaultHeaders: mergeHeaders(
 			{
 				accept: "application/json",
 				"anthropic-dangerous-direct-browser-access": "true",
-				"anthropic-beta": betaFeatures.join(","),
+				...(betaFeatures.length > 0 ? { "anthropic-beta": betaFeatures.join(",") } : {}),
 			},
 			model.headers,
 			optionsHeaders,

packages/pi-ai/src/types.ts

@@ -39,7 +39,8 @@ export type KnownProvider =
 	| "huggingface"
 	| "opencode"
 	| "opencode-go"
-	| "kimi-coding";
+	| "kimi-coding"
+	| "alibaba-coding-plan";
 export type Provider = KnownProvider | string;
 
 export type ThinkingLevel = "minimal" | "low" | "medium" | "high" | "xhigh";

packages/pi-coding-agent/src/core/model-resolver.ts

@@ -35,6 +35,7 @@ export const defaultModelPerProvider: Record<KnownProvider, string> = {
 	opencode: "claude-opus-4-6",
 	"opencode-go": "kimi-k2.5",
 	"kimi-coding": "kimi-k2-thinking",
+	"alibaba-coding-plan": "qwen3.5-plus",
 };
 
 export interface ScopedModel {