Cline now defaults unpinned setups to Claude Sonnet 5.5
Check your model: unpinned Cline setups now default to Sonnet 5.5. The switch covers Cline and OpenRouter providers with no pinned model. Catalog adds Haiku 5.5; ~20 other providers change defaults. Reasoning-off 400s fixed on several frontier models.
Source: Cline v4.1.24 release notes