Anthropic launched Claude Sonnet 4.5 on Monday, marketing the artificial intelligence system as the world's top coding model. The company said the technology excels at building complex agents, operating computers, and demonstrates major advances in reasoning and mathematics. Developers can access the model through the Claude API using the identifier claude-sonnet-4-5, with pricing set at $3 per million input tokens and $15 per million output tokens.
The release accompanies several product enhancements across Anthropic's platform. Claude Code gained checkpoint features that allow users to save progress and revert to earlier states. The company added a native Visual Studio Code extension, context editing capabilities, and memory tools to the Claude API. Max plan subscribers received access to a Chrome browser extension and experimental features for generating software in real time.
The release accompanies several product enhancements across Anthropic's platform. Claude Code gained checkpoint features that allow users to save progress and revert to earlier states. The company added a native Visual Studio Code extension, context editing capabilities, and memory tools to the Claude API. Max plan subscribers received access to a Chrome browser extension and experimental features for generating software in real time.
