QiHang

Access 9 QiHang models through Mastra's model router. Authentication is handled automatically using the QIHANG_API_KEY environment variable.

Learn more in the QiHang documentation.

.env

QIHANG_API_KEY=your-api-key

src/mastra/agents/my-agent.ts

import { Agent } from "@mastra/core/agent";

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant",
  model: "qihang-ai/claude-haiku-4-5-20251001"
});

// Generate a response
const response = await agent.generate("Hello!");

// Stream a response
const stream = await agent.stream("Tell me a story");
for await (const chunk of stream) {
  console.log(chunk);
}

info

Mastra uses the OpenAI-compatible /chat/completions endpoint. Some provider-specific features may not be available. Check the QiHang documentation for details.

Models

9 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
qihang-ai/claude-haiku-4-5-20251001	200K						$0.14	$0.71
qihang-ai/claude-opus-4-5-20251101	200K						$0.71	$4
qihang-ai/claude-sonnet-4-5-20250929	200K						$0.43	$2
qihang-ai/gemini-2.5-flash	1.0M						$0.09	$0.71
qihang-ai/gemini-3-flash-preview	1.0M						$0.07	$0.43
qihang-ai/gemini-3-pro-preview	1.0M						$0.57	$3
qihang-ai/gpt-5-mini	200K						$0.04	$0.29
qihang-ai/gpt-5.2	400K						$0.25	$2
qihang-ai/gpt-5.2-codex	400K						$0.14	$1

Advanced Configuration

Custom Headers

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.qhaigc.net/v1",
    id: "qihang-ai/claude-haiku-4-5-20251001",
    apiKey: process.env.QIHANG_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});

Dynamic Model Selection

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "dynamic-agent",
  name: "Dynamic Agent",
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === "complex";
    return useAdvanced
      ? "qihang-ai/gpt-5.2-codex"
      : "qihang-ai/claude-haiku-4-5-20251001";
  }
});