Claude Sonnet 4.5: Revolution in AI Coding Endurance

A breakthrough in sustained AI performance showcases a 30-hour autonomous coding capability.

Anthropic's latest model is redefining perceptions of AI endurance. Claude Sonnet 4.5 can autonomously code for 30 hours, over four times longer than its predecessor. This signifies a fundamental shift in AI's ability to handle extended tasks reliably.

Most AI tools are designed for speed, excelling in short coding tasks but struggling with prolonged logic and memory retention. Claude Sonnet 4.5 overcomes this barrier, maintaining focus 4.5 times longer than version 4.0, reducing the need for human intervention during projects.

Claude Sonnet 4.0 held its ground against GPT-4 and Gemini in short coding tasks but hit a wall after seven hours. Version 4.5 extends this window to 30 hours, maintaining consistency and placing Anthropic ahead in sustained performance.

While competitors focus on new capabilities, Anthropic has carved out an advantage in reliability over time.