Anthropic Removes Claude 3.5 Sonnet from Bedrock, Draws Researcher Backlash

Anthropic will remove Claude 3.5 Sonnet (Sonnet 4) from AWS Bedrock in October, blocking new users. Researchers, who consider it the best-aligned model, criticize the move as harmful to alignment research, though the reason remains unclear.

2026-08-14 ~ 2026-08-14 · 2 related posts

• Anthropic Set to Deprecate Claude 3.5 Sonnet on AWS Bedrock in October — repligate · 2026-08-14
• Anthropic Deprecating Sonnet 4 on Bedrock Sparks Alignment Research Concerns — repligate · 2026-08-14