/compact Error making request (HTTP 400): adaptive thinking is not supported on this model

when pressing /compact with claude opus 4.6 with thinking in mode high on windows

RStudio 2026.04.0-daily+313 "Globemaster Allium" Daily (aa4f6f63867b5df8befa49a5625b5cba6c9e9d3a, 2026-02-25) for windows
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) RStudio/2026.04.0-daily+313 Chrome/142.0.7444.265 Electron/39.6.0 Safari/537.36, Quarto 1.8.26, Posit Assistant 0.1.0

Posit Assistant

  • Version: 0.1.0
  • Platform: RStudio
  • Git Commit: 1d1941e7
  • Build Date: 26 Feb 2026, 04:10