Fireworks AI
Access 10 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 .
FIREWORKS_API_KEY=your-api-key
import { Agent } from "@mastra/core";
const agent = new Agent({
name: "my-agent",
instructions: "You are a helpful assistant",
model: "fireworks-ai/accounts/fireworks/models/deepseek-r1-0528"
});
// 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);
}
Models
Model | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
---|---|---|---|---|---|---|---|---|
fireworks-ai/accounts/fireworks/models/deepseek-r1-0528 | 160K | $3 | $8 | |||||
fireworks-ai/accounts/fireworks/models/deepseek-v3p1 | 164K | $0.56 | $2 | |||||
fireworks-ai/accounts/fireworks/models/deepseek-v3-0324 | 160K | $0.90 | $0.90 | |||||
fireworks-ai/accounts/fireworks/models/kimi-k2-instruct | 128K | $1 | $3 | |||||
fireworks-ai/accounts/fireworks/models/qwen3-235b-a22b | 128K | $0.22 | $0.88 | |||||
fireworks-ai/accounts/fireworks/models/gpt-oss-20b | 131K | $0.05 | $0.20 | |||||
fireworks-ai/accounts/fireworks/models/gpt-oss-120b | 131K | $0.15 | $0.60 | |||||
fireworks-ai/accounts/fireworks/models/glm-4p5-air | 131K | $0.22 | $0.88 | |||||
fireworks-ai/accounts/fireworks/models/qwen3-coder-480b-a35b-instruct | 256K | $0.45 | $2 | |||||
fireworks-ai/accounts/fireworks/models/glm-4p5 | 131K | $0.55 | $2 |
Advanced Configuration
Custom Headers
const agent = new Agent({
name: "custom-agent",
model: {
url: "https://api.fireworks.ai/inference/v1/chat/completions",
modelId: "accounts/fireworks/models/deepseek-r1-0528",
apiKey: process.env.FIREWORKS_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
? "fireworks-ai/accounts/fireworks/models/deepseek-r1-0528"
: "fireworks-ai/accounts/fireworks/models/deepseek-v3-0324";
}
});