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Lexmount Browser

Cloud browsers for AI agents, powered by the open-source Moli engine

Freemium · $12Workflow automationDeveloper tools
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Lexmount Browser is a developer tools tool for Developers and Small businesses, offered as freemium ($12/mo). Popular alternatives include Composio, Omnara, NativeShip.

About Lexmount Browser

Lexmount Browser is a cloud browser platform for AI agents run by Beijing Zhuyue Technology Co., Ltd. Its newest piece is Moli, an open-source headless browser engine written from scratch in Rust rather than wrapped around Chromium. Developers use it to give agents real web access: isolated sessions, form filling and content extraction from JavaScript-heavy sites.

The platform bundles a Cloud Browser API, Web Fetch and Web Search APIs, an Agent that takes a goal and a starting URL, a Browser CLI for coding agents, and observability with live view, console, network and logs. Sessions run either Moli for light, fast agent browsing or Chromium for extensions, persistent contexts and file workflows. Python and Node.js SDKs connect through Playwright, Puppeteer or CDP. Free gives 10 browser hours a month; paid tiers are one-time monthly passes from $12 for 100 hours.

It fits agent builders who run many short sessions and care about cold-start time and memory. Browserbase and Browser Use are the closest hosted rivals, and Apify is broader for ready-made scrapers. Speed and memory figures are vendor benchmarks, and in Lexbench Moli 0.1.1 passed 81.88% of comparable tasks against 99.85% for Chrome, so test your target sites.

On October 25, 2026, Lexmount launched Moli on Product Hunt as the fastest headless browser for agents and harnesses, and it finished #1 of the day. Buying tip: self-host the open-source Moli binary or use the free tier first, then buy a Pro month only once real workloads need more concurrency.

Key features of Lexmount Browser

  • Moli, an open-source Rust browser engine under Apache-2.0 or MIT
  • Choice of Moli or Chromium per session depending on the task
  • CDP, WebDriver Classic and WebDriver BiDi from one self-hosted Moli endpoint
  • Python and Node.js SDKs with Playwright and Puppeteer guides
  • Web Fetch and Web Search APIs for structured page content and links
  • Goal-driven browser Agent with reusable task templates
  • Live view, console, network and log inspection of running sessions
  • Per-session official or custom proxies and persistent contexts

Pros and cons

Pros

  • Moli engine is open source and can run locally on Linux, macOS or Windows
  • Vendor benchmarks show far lower memory use than headless Chrome
  • Low entry price of $12 for 100 browser hours and 25 concurrent sessions
  • Chromium fallback for sites that need full compatibility
  • Free tier allows real tasks before paying

Cons

  • Moli still fails more automation tasks than Chrome in Lexmount's own tests
  • Speed and memory claims are vendor benchmarks, not independent ones
  • Free tier excludes persistent contexts, custom proxies and downloads
  • Persistent contexts, replay and stored downloads are not offered for Moli
  • No published compliance certifications such as SOC 2

Lexmount Browser pricing

Lexmount Browser uses a freemium model.

PlanPriceIncludes
Free$010 browser hours, 3 concurrent sessions, 1,000 Web Fetch requests
Pro$12 / moOne-time 1-month pass; 100 hours, 25 concurrent, 10 contexts
Pro+$60 / moOne-time 1-month pass; 500 hours, 100 concurrent, 10k fetches
Enterprise$180 / moOne-time 1-month pass; 1,500 hours, 250 concurrent sessions

Source: browser.lexmount.com · checked on Oct 26, 2026

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How Lexmount Browser compares in Developer tools

Rank by votes
#2 / 60

0 votes from members

Starting price
$12

33% below the category median ($18/mo)

Free alternatives
13

Free or open-source tools in Developer tools

Lexmount Browser ranks #2 of 60 developer tools tools by community votes and is priced below most tools in the category.

Common use cases

  1. 1Giving coding agents a fast headless browser for research and testing
  2. 2Running high-concurrency scraping and extraction jobs for LLM pipelines
  3. 3Reinforcement learning environments that spin up many short sessions
  4. 4Automating form filling and multi-step web workflows with an agent
  5. 5Replacing headless Chrome in Playwright scripts to cut memory use

Best for

Developers building AI agents who need many cheap, fast cloud or self-hosted browser sessions for fetching and automating web pages.

Not ideal for

Teams that need pixel-perfect rendering, heavy Canvas or media playback, or a mature compliance-backed vendor (Browserbase, Apify).

Integrations

  • Playwright
  • Puppeteer
  • Chrome DevTools Protocol (CDP)
  • Codex
  • Node.js SDK
  • Python SDK

Our take

Lexmount Browser is worth a trial for agent builders who are paying for idle Chrome memory, and the open-source Moli engine lowers the risk of lock-in. Keep Chromium sessions for sites where Moli breaks, and verify the benchmark gains on your own workloads before committing.

FAQ

What is Lexmount Browser?
Lexmount Browser is a Developer tools tool: Cloud browsers for AI agents, powered by the open-source Moli engine.
How much does Lexmount Browser cost?
Lexmount Browser uses a Freemium model; paid plans start at $12 per month.
What are the best alternatives to Lexmount Browser?
Community-listed alternatives to Lexmount Browser include Composio, Omnara, NativeShip, Pipedream.
What does Lexmount Browser integrate with?
Lexmount Browser integrates with Playwright, Puppeteer, Chrome DevTools Protocol (CDP), Codex, Node.js SDK, Python SDK and more.
Which platforms does Lexmount Browser support?
Lexmount Browser is available on web, linux, macos, windows.
Who is Lexmount Browser for?
Developers building AI agents who need many cheap, fast cloud or self-hosted browser sessions for fetching and automating web pages.

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