Which AI Model Should You Use for Coding?

xAI's Grok Code Fast has gained massive adoption since launching in August, with users processing over 1 trillion tokens due to its significantly lower cost—25x cheaper per request than Claude Sonnet 4 while delivering "good enough" quality for real development projects. Testing across six AI models revealed that while premium options like Claude still offer the highest quality, cost-effective alternatives like Grok can produce solid results when properly integrated into development workflows.