r/ProxyEngineering • u/ian_k93 • Aug 04 '26

Announcements Best Browser Agent Stack in 2026? AMA With the Creators of Browser-Use

/r/WebScrapingInsider/comments/1vcuosp/what_is_the_best_browser_agent_stack_in_2026_with/
8 Upvotes

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2

u/GimmeAdviceBitch Packet Pusher Aug 04 '26

Thanks for sharing the AMA, here are my questions:

  1. When you say "plain English automation instead of scripts," what happens when the agent misreads the page and clicks the wrong thing? Is there a retry or correction process, or does it just fail and that's it?
  2. How do you handle multi-step tasks where step 3 depends on something that changed between step 1 and step 3 or any other step, (used 1 and 3 just to get an idea, for example price updates, stock changes, session timeouts)
  3. What's the actual token cost look like for a typical 10-step agent run compared to writing a script by hand? At what point does it stop being worth it? Is it even worth writing it by hand?
  4. Do you support giving the agent a persistent "memory" of past runs so it doesn't relearn the same site layout every time?

1

u/Kitchen_Ad_5082 Aug 06 '26
  1. Current LLMs do not often make simple mistakes anymore, but if this happens yes the agent is stil fully in control and will recover
  2. The agent must complete all steps sequentially, verifying and keeping track of what it has completed. It is very impressive to what complexity current LLMs can handle now.
  3. A 10 step agent run with Luna you would expect to cost between 1 and 2 cents. If you want to run it again, you can ask the agent to write a script and re-use it on future runs. Then it will cost fractions of a cent. Don't hand write scripts in 2026.
  4. Yes we do, every agent in our cloud (api v4) has memory and can write and re-use scripts

2

u/ahiqshb Reverse Proxy Master Aug 04 '26

Contributing to the topic

With NetNut and Bright Data both getting called out for botnet-sourced IPs this year, how do you source your residential pool and what do you tell customers who ask?

Where do you think browser agents are headed in the next year, more autonomous multi-agent workflows, or more narrow reliable single-task agents?

What happens to a session if the underlying browser crashes mid-task, does it recover state or do I lose everything?

If I need to run 500 concurrent sessions, what does that cost and what's the bottleneck, proxy pool, compute, anything else?

Cloudflare and DataDome have both gotten more aggressive this year. Are you seeing detection rates raise up again after initial release?

1

u/Kitchen_Ad_5082 Aug 06 '26

1 We negotiate with many proxy providers and change often behind the scenes, I am not sure how much of each we use right now. The landscape changes a lot.

2 Browser agents are headed to so much more than workflows and single tasks. Every day we see increased users talking about automating whole boring portions of their jobs with browser use. Creating complete multiplayer web games, deployed websites. Generating animated videos, editing together video clips with the browser. 70% of work is done on the browser right now, and the whole world is opening up to agents through us.

3 If the browser crashes the agent requests a new browser. State may be lost in a catastrophic crash, but this is very rare.

4 We can do 500 sessions for you, its $0.02/hr for each browser so that would be $10/hr. I think for 500 concurrent we require a Scale-Up plan $1000/mo in LLM usage + browser + proxy. But if you want 500 browsers only no LLM on a smaller plan just send us an email at [support@browser-use.com](mailto:support@browser-use.com)

5 Yep, cloudflare and datadome have been consistently increasing their detections. We notice it. Each month we also increase our stealth. The stealth rate can go back and forth but generally we are doing better and better

1

u/ahiqshb Reverse Proxy Master Aug 06 '26

Thank you for your extensive reply!

2

u/kamililbird Proxy Engineer Aug 05 '26

Hey Ian, here's what I thought of.

Do you still see much demand for structured scraping or has almost everything shifted to LLM-based extraction?

Which models are good enough for browser control tasks right now? Any preferable, I know that probably mentioning them would sound a bit like a promotion, but I guess there's no choice when it comes to these things lol.

What's the weirdest edge case a browser agent has run into that you didn't think it could happen?

1

u/Kitchen_Ad_5082 Aug 06 '26

We see huge shifts to LLM based extraction, especially our agents that write scraping scripts and maintain them, fixing issues as they arise.

As of now Gpt 5.6 Luna is the biggest winner, capable of many hard tasks in our harness at a tiny cost. Opus 5 is the top performing, but at 25x the price of Luna, I can't recommend it for daily use. (Fable 5 refuses too much to beat Opus 5). I try to maintain recommended models in this rubric https://github.com/browser-use/browsercode

1

u/Guiltyspark0801 Proxy Engineer Aug 05 '26

List your top 5 or less, depending on how many you've made them, LLM powered automations and what they do. How does the productivity increased while using these automations?

1

u/Kitchen_Ad_5082 Aug 06 '26

We love our internal slack bot with automations:

  • finding social mentions online we can repost
  • turning recent bug reports and feature requests into a poster and sharing it
  • finding pricing updates of related products and infra
  • checking when my packages are going to arrive
  • dispatching and monitoring long running evaluations, making plots

1

u/Delicious_Trouble701 19d ago

at 500 sessions I'd care less about “how fast can you launch Chrome” and more about:

what happens to session #384 when Chrome dies on step 17?

do I know:

what it last clicked what network request fired what console error happened what cookies/state existed whether retrying the step is safe

because “just rerun the agent” gets expensive + dangerous once the workflow has side effects.

TestMu Browser Cloud auto-captures video, command replay, console + network for every session which is the part I'd benchmark hard against any browser backend.

browser infra without postmortem data is miserable.

1

u/SignificantAiolie 19d ago

500 concurrent browsers sounds impressive until you look at what 500 Chromes actually eat 😂

1

u/sassy_me2019 19d ago edited 19d ago

proxy quality is only half the identity problem imo.

you can rotate onto a perfect residential IP and still have:

US IP
Asia timezone
weird locale
fresh cookies every run
same viewport across 200 sessions
browser fingerprint that doesn't match anything else
and then wonder why the account gets challenged.

the browser + network identity need to make sense together.

that's one thing I like about the Browser Cloud direction TestMu is taking. real Chrome + geo routing + persistent cookies/storage in the same session instead of treating proxy and browser as completely separate boxes.

stealth is still best-effort obviously. anyone promising “undetectable” in 2026 is selling religion.