From Anthropic · · 1m 20s
Claude Sonnet 5.5 Launch
Claude Sonnet 5.5: Faster, cheaper AI model for everyday tasks.
In brief
Claude Sonnet 5.5: Faster, cheaper AI model for everyday tasks. Claude Sonnet 5.5 is a faster, lower-cost AI model for everyday tasks, coding, and document creation. Originally reported by Anthropic.
Claude Sonnet 5.5 Launch
Claude Sonnet 5.5 is the second model in the Claude 5.5 family, a clear upgrade over Claude Sonnet 5.
Faster Performance
Sonnet 5.5 scores 70.6% on Terminal-Bench 4.0, an agentic coding evaluation, compared to Sonnet 5’s 10.3%.
Cost Efficiency
Sonnet 5.5 costs up to 30% less per task than Sonnet 5, with cache reads at $0.10 per million tokens.
Speed Improvement
Sonnet 5.5 generates outputs 30%+ faster than Sonnet 5, making it the fastest Sonnet model to date.
Design Focus
Sonnet 5.5 is strongest at well-scoped everyday tasks, fixing bugs, and creating polished documents, slides, and spreadsheets.
Cybersecurity Safeguards
Sonnet 5.5 launches with cyber safeguards and fallbacks comparable to Opus 5’s, the first Sonnet model with such features.
Epic Games Test
Epic Games reported Sonnet 5.5 handled tens of thousands of lines of code for gameplay system architecture with less prescriptive prompting.
Claude Haiku 5.5 Coming Soon
Claude Haiku 5.5, built for high-volume and cost-sensitive applications, will join the Claude 5.5 family in the coming weeks.
The short version
Claude Sonnet 5.5 is a faster, lower-cost AI model for everyday tasks, coding, and document creation.
