[Feature]: Support for Anthropic's Advisor Tool

[icywinters]

Issue Checklist

• I understand that issues are for reporting problems and requesting features, not for off-topic comments, and I will provide as much detail as possible to help resolve the issue.
• I have checked the pinned issues and searched through the existing open issues, closed issues, and discussions and did not find a similar suggestion.
• I have provided a short and descriptive title so that developers can quickly understand the issue when browsing the issue list, rather than vague titles like "A suggestion" or "Stuck."
• The latest version of Cherry Studio does not include the feature I am suggesting.

Platform

Windows

Version

v1.8.4

Is your feature request related to an existing issue?

When running an Anthropic agent in Cherry Studio, we're stuck choosing between intelligence and cost. Opus is smart but expensive for long loops; Sonnet and Haiku are cheaper but struggle with harder decisions. There's currently no way to get the best of both within a single request.

Anthropic introduced the advisor tool for this on April 9. It requires the advisor_20260301 tool type and the anthropic-beta: advisor-tool-2026-03-01 header

Desired Solution

Please consider supporting the advisor_20260301 tool type so users can add an Opus advisor to Sonnet/Haiku executor runs on Anthropic's side, the entire handoff happens server-side within a single /v1/messages request. Thank you

Alternative Solutions

No response

Additional Information

• In Anthropic's evaluations, Sonnet + Opus Advisor showed a +2.7 percentage points improvement over Sonnet solo while being 11.9% cheaper per task.
• On BrowseComp, Haiku + Opus Advisor scored 41.2% vs. 19.7% when running solo and at 85% lower cost than Sonnet.

https://claude.com/blog/the-advisor-strategy