Venice AI

Access 20 Venice AI models through Mastra's model router. Authentication is handled automatically using the VENICE_API_KEY environment variable.

Learn more in the Venice AI documentation.

VENICE_API_KEY=your-api-key

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

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant",
  model: "venice/claude-opus-45"
});

// 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 Venice AI documentation for details.

Models

20 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
venice/claude-opus-45	203K						$6	$30
venice/deepseek-v3.2	164K						$0.40	$1
venice/gemini-3-pro-preview	203K						$3	$15
venice/google-gemma-3-27b-it	203K						$0.12	$0.20
venice/grok-41-fast	262K						$0.50	$1
venice/hermes-3-llama-3.1-405b	131K						$1	$3
venice/kimi-k2-thinking	262K						$0.75	$3
venice/llama-3.2-3b	131K						$0.15	$0.60
venice/llama-3.3-70b	66K						$0.70	$3
venice/mistral-31-24b	131K						$0.50	$2
venice/openai-gpt-52	200K						$2	$18
venice/openai-gpt-oss-120b	131K						$0.07	$0.30
venice/qwen3-235b	131K						$0.45	$4
venice/qwen3-235b-a22b-instruct-2507	131K						$0.15	$0.75
venice/qwen3-235b-a22b-thinking-2507	131K						$0.45	$4
venice/qwen3-4b	33K						$0.05	$0.15
venice/qwen3-coder-480b-a35b-instruct	262K						$0.75	$3
venice/qwen3-next-80b	262K						$0.35	$2
venice/venice-uncensored	33K						$0.20	$0.90
venice/zai-org-glm-4.6	203K						$0.85	$3

Advanced Configuration

Custom Headers

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.venice.ai/api/v1",
    id: "venice/claude-opus-45",
    apiKey: process.env.VENICE_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});

Dynamic Model Selection

const agent = new Agent({
  id: "dynamic-agent",
  name: "Dynamic Agent",
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === "complex";
    return useAdvanced
      ? "venice/zai-org-glm-4.6"
      : "venice/claude-opus-45";
  }
});