The list of available LLMs in Kagi Assistant is fairly out-of-date: https://help.kagi.com/kagi/ai/assistant.html#available-llms
For instance, it's missing the switches to Sonnet 4.5 and DeepSeek 3.1, as well as some of the new models like GPT 5 and Hermes 4. Also, Kimi K2 is available on all plans now, not just Ultimate.
Updating the documentation (and keeping it up-to-date) would help users compare the list of models between Ultimate and other plans.