Claude 4.0: A Detailed Analysis

The Claude 4 lineup features two new AI models: Claude Opus 4 and Claude Sonnet 4. Sonnet 4, a free generalist model with a 200K token context window, excels in common tasks like coding and writing. Opus 4, designed for complex reasoning and coding, is the top-performing model on the SWE benchmark but is not free. Both models significantly improve upon their predecessors, with Opus 4 showing superior coding abilities in practical tests. Users can choose between the versatile Sonnet 4 for everyday tasks or the more powerful Opus 4 for advanced needs.