PostHog/posthog-js posthog-js-lite@4.11.0 on GitHub

4.11.0

#4663 6ae173f Thanks @pauldambra! - Detect the Claude, Codex, and ChatGPT apps from their user agent markers: $browser now reports the app name instead of Chrome.
ChatGPT versions its apps differently per platform, so its $browser_version is not comparable across platforms. (2026-09-01)
#4663 6ae173f Thanks @pauldambra! - Use the shared @posthog/core browser detection instead of a separate copy. $browser and $browser_version now match posthog-js.
This reattributes some events. Browsers the old copy missed (Vivaldi, Yandex, Whale, DuckDuckGo, Brave on iOS, Pale Moon, Waterfox, Oculus Browser) now report their own name instead of Chrome or Safari. User agents that only contain Gecko now report Firefox instead of Mozilla. Opera versions older than 15 are no longer detected. (2026-09-01)