Introducing Claude Sonnet 5 \ Anthropic
anthropic.com · 1,722 words · saved by 1 readers
Our most agentic Sonnet yet, with top-tier intelligence for coding and everyday professional work.
Claude Sonnet 5 is built to be the most agentic Sonnet model yet. It can make plans, use tools like browsers and terminals, and run autonomously at a level that, just a few months ago, required larger and more expensive models. For many developers, the agentic AI era began with Sonnet-class models: Claude Sonnet 3.5, 3.6, and 3.7 were the first models that showed impressive skills in coding and tool use. More recently, though, the clearest gains in agentic capabilities have been in our Opus-class models. Sonnet 5 narrows the gap: its performance is close to that of Opus 4.8, but at lower…
saved by
related reading
- Claude Sonnet 4.5 System Cardassets.anthropic.com
- Claude Sonnet 4.5 is probably the “best coding model in the world” (at least for now)simonwillison.net
- ClaudeLog - Claude Code Docs, Guides, Tutorials & Best Practicesclaudelog.com
- A Guide to Claude Code 2.0 and getting better at using coding agents – sankalp's blogsankalp.bearblog.dev
- Claude Code Cheat Sheetcc.storyfox.cz
- Best practices for Claude Code - Claude Code Docsanthropic.com
- Scaling Monosemanticity: Extracting Interpretable Features from Claude 3 Sonnettransformer-circuits.pub
- Prompting best practicesdocs.anthropic.com
- Claude Sonnet 4.5: System Card and Alignment — LessWronglesswrong.com
- Introducing Claude Opus 5 \ Anthropicanthropic.com
- AI Model & API Providers Analysis | Artificial Analysisartificialanalysis.ai
- Introducing Claude Opus 4.5 \ Anthropicanthropic.com