In-browser LLM workbench

Measure browser AI on your hardware.

Find, download, and compare language models across browser runtimes and backends. Your models, chats, and results never leave this device.

Built for evidence, not guesses

WebAI shows what your browser can actually do, keeps everything on your device, and tells you why something is unavailable instead of just hiding it.

Capability first

See which browser APIs and backends are actually available here.

Local by design

Models, chats, settings, and results all stay in browser storage.

Measured results

Compare runtimes and quantizations with repeatable numbers from this machine.