> ## Documentation Index
> Fetch the complete documentation index at: https://docs.visk.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Product updates and fixes for Visk

**September 30, 2026**

## New default model and effort

* Sonnet 5.5 is now the default model.
* GPT-6.1 Sol and GPT-6 Luna replace GPT-5.6 Sol and Luna in the model picker.
* The effort setting now defaults to **Medium**. It's also now an inline Low / Medium / High row in the model menu, not a submenu, so it fits in the PowerPoint add-in.

## Fixes

* A thinking block you've opened stays open while the response streams.
* Fixed requests that could fail straight after signing in.


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