Anthropic Launches Claude Sonnet 5.5 with Speed and Cost Improvements

Key Info

Anthropic has introduced Claude Sonnet 5.5, the second model in the Claude 5.5 family. It is described as a clear upgrade over Sonnet 5, running more than 30% faster and costing up to 30% less for most workloads.

Highlights

• Claude Sonnet 5.5 is now publicly available as part of the Claude 5.5 lineup.
• The model delivers a >30% speed increase compared to Sonnet 5.
• Costs are reduced by up to 30% for typical usage patterns.