1. Anthropic Deprecates Stable Model, Forces Users to Unpredictable 'Latest' Version, Breaking Client Applications
Anthropic is deprecating a proven, stable model version and forcing all users onto a rolling 'latest' version, introducing a critical risk of unpredictable breakage for developers. The company has informed users via email that the effective `claude-sonnet-4-5-20250929` model is being deprecated in favor of the newer `c...