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Lightpanda 1.0 speaks WebDriver, making it the only browser that natively speaks every web automation protocol: CDP, WebDriver and MCP. Run your Selenium scripts on it by changing the driver setup: up to 4.4x faster than headless Chrome, with 7x less memory.
Lightpanda leaves beta with 1.7 million passing Web Platform Tests and CORS on by default. Here's what changed since November 2024.
Lightpanda is a browser for machines, from agents acting on behalf of a user to data extraction at scale and indexing. Best practice looks different according to your use case.
The browser agent stack, mapped layer by layer: model, harness, browser drivers, engine. Lightpanda covers three of the four in a single binary.
We learned that an agent’s tools matter more than its engine. We rebuilt our tool surface: the MCP is now far faster and more accurate, and a native agent built into the binary is faster still.
Lightpanda now has a built-in agent. Talk to it in natural language, get a reliable script back. Run that script forever only calling an LLM when it needs fixing.
We ran Lightpanda, agent-browser, and browser-use through AssistantBench and GAIA Level 1 with Claude Sonnet 4.6 as the brain. The tool surface mattered more than the engine.
Every tool in web automation runs on a browser engine. There are only two real options: Chromium and Lightpanda. Here's how the entire stack fits together.
The LP domain grows with LP.getSemanticTree, LP.getInteractiveElements, and LP.getStructuredData alongside a native MCP server built into the browser binary that exposes the same engine capabilities without CDP.
Three years ago when we started Lightpanda, we asked ourselves a seemingly simple question what would a browser look like if it were built specifically for automation?
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