Perplexity Comet VS Lightpanda

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• Very low memory footprint
  Lightpanda is a headless browser built from scratch in Zig rather than a Chromium fork, and it uses far less memory than Chrome headless. The project claims roughly 9x lower memory usage, which lets you run many more concurrent instances on the same hardware.
• Fast execution and startup
  Because it skips rendering and graphical components, Lightpanda starts almost instantly and executes pages much faster than Chrome-based headless browsers. The project claims up to about 11x faster performance. This helps with high-volume scraping and automation.
• Designed for automation and AI agents
  It is purpose-built for machine use cases such as web scraping, data extraction, testing, and LLM/AI agent workflows. It does not carry the overhead of a full consumer browser, so it suits these workloads well.
• Compatible with existing tooling via CDP
  Lightpanda exposes a Chrome DevTools Protocol (CDP) server. Popular tools like Puppeteer, Playwright, and chromedp can connect to it with little change to existing scripts, which lowers the cost of adopting or switching.
• Open source with a cloud option
  The core browser is open source under AGPL-3.0, so you can inspect, self-host, and contribute to it. A managed cloud offering is also available for teams that don't want to run their own infrastructure.

Possible disadvantages

• Beta-stage maturity
  The project is still in beta and under active development. You may run into bugs, crashes, or unstable behavior, which makes it riskier for production-critical workloads than mature browsers.
• Incomplete Web API coverage
  Because it is a from-scratch implementation, not every Web API is supported yet. Complex or JavaScript-heavy sites may fail to load or behave incorrectly, and some pages that work in Chrome will not work here.
• No rendering or visual features
  Lightpanda has no graphical rendering, so it cannot take screenshots, run visual regression tests, or support anything that depends on layout and painting. That limits it to non-visual use cases.
• Playwright/Puppeteer compatibility gaps
  Although it supports CDP, its implementation is not complete. Some Playwright or Puppeteer features may not work, and updates to those libraries can break compatibility, which can require workarounds.
• AGPL licensing and a small ecosystem
  The AGPL-3.0 license may be a concern for companies that want to embed or modify it in proprietary products. As a young project, it also has a smaller community, fewer resources, and less third-party support than Chromium-based options.

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