Added support for all GPT-5 models. Added support for Grok-4 via `xai/grok-4` and `openrouter/x-ai/grok-4` model names. Added support for `gemini/gemini-2.5-flash-lite-preview-06-17` model, by Tamir Zahavi-Brunner. `/clear` now prints “All chat history cleared.” so you know it worked, by Zexin Yuan. `/undo` output now shows only the first line of each commit message, making it easier to read. Added support for `openrouter/moonshotai/kimi-k2` model, by Jack Harrington.

Display model announcements with no-arg `/model` command. Fixed an issue where new settings for an existing model didn't replace the old ones, by Andrew Grigorev. Fixed analytics to support the latest PostHog SDK event-capture API. Bumped dependencies to pick up latest litellm==1.75.0. Aider wrote 88% of the code in this release.