Cortecs

Access 11 Cortecs models through Mastra's model router. Authentication is handled automatically using the CORTECS_API_KEY environment variable.

Learn more in the Cortecs documentation.

CORTECS_API_KEY=your-api-key

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

const agent = new Agent({
  name: "my-agent",
  instructions: "You are a helpful assistant",
  model: "cortecs/claude-4-5-sonnet"
});

// 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 Cortecs documentation for details.

Models

11 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
cortecs/claude-4-5-sonnet	200K						$3	$16
cortecs/claude-sonnet-4	200K						$3	$17
cortecs/deepseek-v3-0324	128K						$0.55	$2
cortecs/gemini-2.5-pro	1.0M						$2	$11
cortecs/gpt-4.1	1.0M						$2	$9
cortecs/gpt-oss-120b	128K						—	—
cortecs/kimi-k2-instruct	131K						$0.55	$3
cortecs/llama-3.1-405b-instruct	128K						—	—
cortecs/nova-pro-v1	300K						$1	$4
cortecs/qwen3-32b	16K						$0.10	$0.33
cortecs/qwen3-coder-480b-a35b-instruct	262K						$0.44	$2

Advanced Configuration

Custom Headers

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

Dynamic Model Selection

const agent = new Agent({
  name: "dynamic-agent",
  model: ({ runtimeContext }) => {
    const useAdvanced = runtimeContext.task === "complex";
    return useAdvanced
      ? "cortecs/qwen3-coder-480b-a35b-instruct"
      : "cortecs/claude-4-5-sonnet";
  }
});