Claude Sonnet 4.5: The AI That Codes for 30 Hours Straight

Author(s): M

Originally published on Towards AI.

Anthropic just released what they’re calling “the best coding model in the world.”

On September 29, 2025, Anthropic dropped a bombshell on the AI community. They released Claude Sonnet 4.5, and they’re not being modest about it. They’re calling it “the best coding model in the world.”

Claude Sonnet 4.5 represents a significant advancement in AI coding models, boasting enhancements in coding efficiency, reasoning, and usability across various fields such as cybersecurity and finance. This model can autonomously work on complex tasks for over 30 hours, making it suitable for both technical and non-technical applications. Additionally, its safety features and production-ready outputs enhance security and usability, making it an appealing solution for enterprises. As the competition intensifies with advancements from other companies, developers are expected to leverage these capabilities for more efficient workflows and better project outcomes.

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Published via Towards AI