Using Models with Agents

VoltAgent 1.x has no llm provider prop. Set model to either:

• An ai-sdk LanguageModel (imported from a provider package), or
• A model string like openai/gpt-4o-mini resolved by the built-in model router.

Quick Example

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

const agent = new Agent({
  name: "my-agent",
  instructions: "Helpful and concise",
  model: "anthropic/claude-3-5-sonnet",
});

const res = await agent.generateText("Say hi", { temperature: 0.2 });
console.log(res.text);

You can also pass a LanguageModel directly:

import { Agent } from "@voltagent/core";
import { anthropic } from "@ai-sdk/anthropic";

const agent = new Agent({
  name: "my-agent",
  instructions: "Helpful and concise",
  model: anthropic("claude-3-5-sonnet"),
});

Provider Selection

Choose any ai-sdk provider package that fits your needs (OpenAI, Anthropic, Google, Groq, Mistral, Vertex, Bedrock, etc.), or use model strings. For installation and an up-to-date model matrix, see:

Providers & Models

For how model strings are resolved and how environment variables map, see:

Model Router & Registry