Anthropic releases Claude Sonnet 4.5 with new coding and reasoning capabilities
Anthropic has launched Claude Sonnet 4.5, its latest AI model designed to improve coding, reasoning, and computer-use tasks. The update introduces significant benchmark gains, new developer tools, and expanded integrations, while keeping pricing unchanged. The release signals Anthropic’s continued push to position Claude as a core tool for enterprise-grade AI workflows.
Claude Sonnet 4.5 is Anthropic’s most advanced coding and reasoning model to date. It leads on SWE-bench Verified for software engineering and achieved 61.4 percent on OSWorld, up from 42.2 percent with Sonnet 4. The model also shows improvements on GPQA Diamond, a graduate-level science reasoning benchmark, reinforcing its use in technical and research-intensive fields.
The release brings new capabilities for developers. Code checkpoints allow users to save and revert progress during long coding sessions. A refreshed terminal and a native VS Code extension simplify workflows. Long-memory tools now enable context editing, allowing users to maintain and manage complex projects over time.
Beyond coding, Claude apps now support code execution, file creation, and a Chrome extension for Max users. Anthropic also introduced the Claude Agent SDK, which gives developers access to the same infrastructure that powers Claude Code, enabling them to build agentic systems for enterprise automation.
Pricing remains the same as Sonnet 4 at three dollars per million input tokens and fifteen dollars per million output tokens. Anthropic emphasized that this consistency is intended to encourage broader adoption across enterprise teams and professionals in finance, law, medicine, and STEM.
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