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Access 29 AnyAPI models through Mastra's model router. Authentication is handled automatically using the ANYAPI_API_KEY environment variable.

Learn more in the AnyAPI documentation.

.env
ANYAPI_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: "anyapi/anthropic/claude-haiku-4-5"
});

// 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 AnyAPI documentation for details.

Models
Direct link to Models

ModelContextToolsReasoningImageAudioVideoInput $/1MOutput $/1M
anyapi/anthropic/claude-haiku-4-5200K——
anyapi/anthropic/claude-opus-4-61.0M——
anyapi/anthropic/claude-opus-4-71.0M——
anyapi/anthropic/claude-sonnet-4-5200K——
anyapi/anthropic/claude-sonnet-4-61.0M——
anyapi/cohere/command-r-plus-08-2024128K——
anyapi/deepseek/deepseek-chat1.0M——
anyapi/deepseek/deepseek-r11.0M——
anyapi/deepseek/deepseek-v4-flash1.0M——
anyapi/deepseek/deepseek-v4-pro1.0M——
anyapi/google/gemini-2.5-flash1.0M——
anyapi/google/gemini-2.5-flash-lite1.0M——
anyapi/google/gemini-2.5-pro1.0M——
anyapi/google/gemini-3-flash-preview1.0M——
anyapi/google/gemini-3-pro-preview1.0M——
anyapi/mistralai/mistral-large-2512262K——
anyapi/openai/gpt-4.11.0M——
anyapi/openai/gpt-4.1-mini1.0M——
anyapi/openai/gpt-5400K——
anyapi/openai/gpt-5-mini400K——
anyapi/openai/gpt-5.1400K——
anyapi/openai/gpt-5.2400K——
anyapi/openai/gpt-5.41.1M——
anyapi/openai/o3200K——
anyapi/openai/o3-mini200K——
anyapi/openai/o4-mini200K——
anyapi/perplexity/sonar-pro200K——
anyapi/perplexity/sonar-reasoning-pro128K——
anyapi/xai/grok-4.31.0M——
29 available models

Advanced configuration
Direct link to Advanced configuration

Custom headers
Direct link to Custom headers

src/mastra/agents/my-agent.ts
const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.anyapi.ai/v1",
    id: "anyapi/anthropic/claude-haiku-4-5",
    apiKey: process.env.ANYAPI_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});

Dynamic model selection
Direct link to 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
      ? "anyapi/xai/grok-4.3"
      : "anyapi/anthropic/claude-haiku-4-5";
  }
});
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