The article analyzes the value of Claude's subscription plans compared to its API, revealing that the 20× plan is less advantageous than it seems. It highlights the 5× plan as offering significant value, especially when considering the cost savings from free cache reads. Detailed calculations demonstrate the real-world benefits of these plans.

Anthropic has released Opus 4.5, improving conversation continuity in its Claude models by summarizing earlier dialogue instead of abruptly ending chats. The new model also achieves an 80.9% accuracy score, surpassing OpenAI's GPT-5.1 in coding tasks, though it still trails in visual reasoning.

This article outlines updates and new features for Claude Opus 4.5. Key improvements include an effort parameter for balancing output quality and cost, new API tools for enhanced functionality, and the introduction of Skills for integrating specialized knowledge into agents.