Fireworks AI

Fireworks AI serves open models with fast inference. You can use it with Browser Use in two ways:

Browser Use Cloud runs kimi-k3 and glm-5.3-flash on Fireworks. Pass the model ID; you need no Fireworks account.
The open-source library calls any Fireworks model with your own FIREWORKS_API_KEY through its OpenAI-compatible endpoint.

Browser Use Cloud

Model	API string	Notes
Kimi K3	`kimi-k3`	Moonshot’s K3 on Fireworks’ fast serving path. Vision and long context.
GLM 5.3 Flash	`glm-5.3-flash`	Z.ai’s first multimodal GLM 5 model. Low cost per step.

Get a key from Browser Use Cloud and pass the model when you create a run:

from browser_use_sdk.v4 import BrowserUse

client = BrowserUse()
run = client.runs.create(
    "Open https://news.ycombinator.com and return the title of the top story.",
    model="kimi-k3",
)
result = client.runs.wait_for_completion(run.id)
print(result.result)

import { BrowserUse } from "browser-use-sdk/v4";

const client = new BrowserUse();
const run = await client.runs.create({
  task: "Open https://news.ycombinator.com and return the title of the top story.",
  model: "kimi-k3",
});
const result = await client.runs.waitForCompletion(run.id);
console.log(result.result);

curl https://api.browser-use.com/api/v4/runs \
  -H "X-Browser-Use-API-Key: $BROWSER_USE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"task":"Open https://news.ycombinator.com and return the title of the top story.","model":"kimi-k3"}'

Usage is billed to your Browser Use credits. These models do not take a bring-your-own Fireworks key in Cloud. Free-plan projects need to buy credits before using them. See Models for every V4 model ID.

Open-source library

Install Browser Use, get a key from the Fireworks dashboard, and point ChatOpenAI at the Fireworks endpoint:

import asyncio
import os

from browser_use import Agent, ChatOpenAI
from dotenv import load_dotenv

load_dotenv()

llm = ChatOpenAI(
    model="accounts/fireworks/models/kimi-k3",
    base_url="https://api.fireworks.ai/inference/v1",
    api_key=os.getenv("FIREWORKS_API_KEY"),
)


async def main():
    agent = Agent(
        task="Open https://news.ycombinator.com and return the title of the top story.",
        llm=llm,
    )
    await agent.run()


asyncio.run(main())

.env

FIREWORKS_API_KEY=

Any Fireworks model ID works in model, such as accounts/fireworks/models/glm-5p3-flash. Fireworks bills these calls to your Fireworks account.

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Browser Use Cloud

Open-source library

​Browser Use Cloud

​Open-source library

Browser Use Cloud

Open-source library