The Browser Use blog

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What we learned building this.

Engineering deep dives, experiments, and lessons from building agents for the web.

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41 articles found.

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Engineering

The Bitter Lesson of Browser Agents

As models get better, the browser harness has to change. A lot.

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Gregor Zunic

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Guides

Playwright vs Selenium vs Puppeteer: Which To Use?

In this article, we'll look at the most popular browser automation tools. We'll compare their use cases, performance, browser support, and language support.

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Nik Tomazic

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Guides

What is a Headless Browser?

Learn what a headless browser is, how it compares to a headful one, its use cases, and the basics of browser automation.

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Nik Tomazic

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Announcements

Browser Use can now pay with your credit card using Stripe Link CLI

You can safely connect your credit card and purchase things with hosted browser agents.

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Gregor Zunic

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Engineering

How we Made Scalable Long-Horizon RL Environments for Browser Use

Browser agent benchmarks are saturating. This is how we build RL environments from real user traffic against the real web.

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Alexander Yue

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Announcements

Browser Agents Can Now Pay With Crypto: Coinbase x Browser Use

Browser Use Cloud now accepts payment in USDC over the x402 protocol. No signup, no credit card, and no API key are needed. Your crypto wallet is your account.

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Laith Weinberger

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Engineering

The Benchmark Behind the Benchmark

A benchmark is a dataset and a judge. The judge sounds like a detail. It is the hard part.

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Gregor Zunic

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Engineering

How We Built Secure, Scalable Agent Infrastructure with AWS Bedrock AgentCore

Agents should have nothing worth stealing and nothing worth preserving. Here's how we achieve that at scale using AWS Bedrock AgentCore.

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Larsen Cundric

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Guides

How to Use AI Agents for QA Automation

Automate QA with an AI agent: point the QA skill at any site to test it like a user, score it 1–5, and get what to fix. Works in Claude Code, Codex, and Cursor.

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Shawn Pana & Laith Weinberger

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Engineering

How We Made Cloud Browsers 3x Cheaper and Faster

We cut browser sessions from $0.06 to $0.02 per hour while making browsers start and scale faster.

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Aitor Mato & Laith Weinberger

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Engineering

Claude Fable Sets High Score on BU Bench

We ran Claude Fable 5 on BU Bench with the open-source Browser Use library. Scoring 80%, it bested all other models.

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Laith Weinberger

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Guides

A Python Program To Scrape Any Website

Use our Python SDK to scrape any website instantly and without being blocked.

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Laith Weinberger

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Engineering

A Production Architecture for the Browser Use Open-Source Library

The SQS-to-Lambda architecture we run on top of the open-source browser-use library.

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Larsen Cundric

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Engineering

Everything I Got Wrong in the Last 4,000 Commits

A year of mistakes as the first engineer at Browser Use, in chronological order.

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Larsen Cundric

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Product

BUX: Your 24/7 Remote Agent with Browser Harness

Browser Use Box (BUX) is a 24/7 remote VM with Claude Code and Browser Harness pre-installed, controlled from Telegram, the web, or SSH.

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Johannes Dittrich

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Engineering

The Bitter Lesson of Agent Harnesses

Don't wrap the LLM. Don't wrap its tools either.

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Gregor Zunic

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Product

Prove You Are a Robot: The Reverse-CAPTCHA Experiment

How we built a reverse-CAPTCHA for agents, and what we learned.

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Luka Secilmis

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Announcements

Remote Browsers for Agents: Browser Use Free Tier

How to give AI agents access to fast, state-of-the-art remote browsers.

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Reagan Hsu

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Engineering

Web Agents That Actually Learn

Every agent that visits a website starts from scratch. We made them remember.

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Gregor Zunic

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Guides

The Ultimate Guide to Web Scraping (2026)

I tested the five most popular web scraping tools — Firecrawl, Bright Data, Cloudflare, Browserbase, and Browser Use — to help you pick the right one.

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Reagan Hsu

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Engineering

How we built the best browser agent with Auto-Research

97% on Online-Mind2Web benchmark. The highest score ever.

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Magnus Müller

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Engineering

We Stealth Benchmarked Every Major Cloud Browser Provider

We built a stealth benchmark from real production data and tested every major cloud browser.

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Aitor Mato

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Customers

How New Generation uses Browser Use to Make the Web Ready for Agents

How New Generation uses Browser Use to score e-commerce sites for agent readiness.

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Luka Secilmis

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Engineering

What Happens When You Give your Agent Maximum Freedom

Training beats prompting. Every time.

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Gregor Zunic

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Guides

How to Authenticate AI Web Agents

A comprehensive guide to logging AI web agents into your accounts — from syncing browser profiles to handling 2FA codes.

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Laith Weinberger

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Guides

How to Win Hackathons: A Guide

Winning hackathons is generally difficult, but there are some simple things you can do to place yourself above the rest.

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Reagan Hsu

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Engineering

How We Built Secure, Scalable Agent Sandbox Infrastructure

From AWS Lambda to Unikraft micro-VMs with a control plane architecture.

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Larsen Cundric

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Engineering

How we built scalable evaluation infrastructure for AI web agents

A deep dive into our highly scalable LLM-as-a-judge evaluation platform that solves web agent variance.

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Alexander Yue

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Engineering

What LLM model should I use for Browser Use? The Definitive Browser AI Benchmark

A statistically rigorous benchmark comparing the speed, cost, and accuracy of top frontier models for browser automation.

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Alexander Yue

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Customers

How Browser Use Empowers Frigade to Build the Best Onboarding Agent

How Frigade uses Browser Use to build AI-powered onboarding that understands any product.

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Reagan Hsu

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Engineering

Browser agent bot detection is about to change

How we built Browser Use to stay undetectable

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Aitor Mato

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Engineering

Browser Agent Benchmark: Comparing LLM Models for Web Automation

We benchmark every major LLM on 100 hard browser tasks. Browser Use Cloud scores 78%, 16 points ahead of the best open-source model.

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Alexander Yue

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Customers

Browser Use <> Parallel AI - The Future of Web Search

How Browser Use and Parallel AI are building the future of web search together.

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Reagan Hsu

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Engineering

The Bitter Lesson of Agent Frameworks

All the value is in the RL'd model, not your 10,000 lines of abstractions.

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Gregor Zunic

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Announcements

Celebrating One Year of Progress in Browser Agents

One year after our first commit, we reflect on how far browser agents have come—and where they need to go next.

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Gregor Zunic

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Engineering

Speed Matters: How Browser Use Achieves the Fastest Agent Execution

Matching state-of-the-art accuracy is table stakes. We built BU 1.0 to be the fastest browser agent while maintaining the same performance.

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Gregor Zunic

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Product

The Fastest Web Agent in the World

We built a special LLM gateway that reduces the latency by 6x while keeping the same performance. The agents can now take 20 steps per minute. How many can a human do?

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Gregor Zunic

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Product

Stealth Browser Infrastructure

Introducing: Stealth and native browser use infrastructure built directly into the library. Want to bypass Cloudflare, or any other anti-bot protection? It's never been easier 👀

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Gregor Zunic

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Engineering

Closer to the Metal: Leaving Playwright for CDP

Why we dropped Playwright and switched to raw CDP for faster, more capable browser automation.

Nick Sweeting

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Announcements

We Raised $17M to Build the Future of Web for Agents

How a weekend project turned into the largest open-source browser automation framework—and why we're just getting started.

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Gregor Zunic

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Engineering

Browser Use = state of the art Web Agent

Browser Use achieves state-of-the-art performance on the WebVoyager benchmark with an 89.1% success rate.

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Gregor Zunic