Fireworks AI

Access 24 Fireworks AI models through Mastra's model router. Authentication is handled automatically using the FIREWORKS_API_KEY environment variable.

Learn more in the Fireworks AI documentation.

.env

FIREWORKS_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: "fireworks-ai/accounts/fireworks/models/deepseek-v4p1-flash"
});

// 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);
}

备注

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

Models

24 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
fireworks-ai/accounts/fireworks/models/deepseek-v4p1-flash	1.0M						$0.30	$1
fireworks-ai/accounts/fireworks/models/deepseek-v4p1-flash-1017	1.0M						$0.30	$1
fireworks-ai/accounts/fireworks/models/ember-1	1.0M						$3	$15
fireworks-ai/accounts/fireworks/models/glm-5p3	1.0M						$1	$4
fireworks-ai/accounts/fireworks/models/glm-5p3-flash	1.0M						$0.15	$0.50
fireworks-ai/accounts/fireworks/models/gpt-oss-120b	131K						$0.15	$0.60
fireworks-ai/accounts/fireworks/models/inkling	1.0M						$1	$4
fireworks-ai/accounts/fireworks/models/kimi-k3	1.0M						$3	$15
fireworks-ai/accounts/fireworks/models/minimax-m3	512K						$0.30	$1
fireworks-ai/accounts/fireworks/models/muse-spark-open	1.0M						$1	$4
fireworks-ai/accounts/fireworks/models/nemotron-3-ultra-nvfp4	262K						$0.60	$2
fireworks-ai/accounts/fireworks/models/nemotron-lightning-3p5-30b-a3b	262K						$0.05	$0.20
fireworks-ai/accounts/fireworks/models/qwen3p8-2p4t-a95b	262K						$2	$6
fireworks-ai/accounts/fireworks/models/qwen3p8-max	262K						$2	$6
fireworks-ai/accounts/fireworks/routers/deepseek-flash-latest	1.0M						$0.30	$1
fireworks-ai/accounts/fireworks/routers/glm-5p3-fast	1.0M						$2	$7
fireworks-ai/accounts/fireworks/routers/glm-fast-latest	1.0M						$2	$7
fireworks-ai/accounts/fireworks/routers/glm-flash-latest	1.0M						$0.15	$0.50
fireworks-ai/accounts/fireworks/routers/glm-latest	1.0M						$1	$4
fireworks-ai/accounts/fireworks/routers/kimi-fast-latest	1.0M						$5	$23
fireworks-ai/accounts/fireworks/routers/kimi-k3-fast	1.0M						$5	$23
fireworks-ai/accounts/fireworks/routers/kimi-latest	1.0M						$3	$15
fireworks-ai/accounts/fireworks/routers/minimax-latest	512K						$0.30	$1
fireworks-ai/accounts/fireworks/routers/qwen-max-latest	262K						$2	$6

Model availability, capabilities, context windows, and pricing are sourced from models.dev and may change.

Advanced configuration

Custom headers

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.fireworks.ai/inference/v1/",
    id: "fireworks-ai/accounts/fireworks/models/deepseek-v4p1-flash",
    apiKey: process.env.FIREWORKS_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
      ? "fireworks-ai/accounts/fireworks/routers/qwen-max-latest"
      : "fireworks-ai/accounts/fireworks/models/deepseek-v4p1-flash";
  }
});