Anthropic Slashes Claude Opus 4.5 Pricing by 80% While Adding 200K Token Context and Enhanced Computer Control

Anthropic cuts Claude Opus 4.5 pricing by 80% to $5 per million input tokens while doubling context to 200K and adding enhanced computer control features, though testing shows frontier AI models now perform so similarly that meaningful differences become nearly impossible to detect.

• Anthropic releases Claude Opus 4.5 with significantly reduced pricing at $5/million input and $25/million output, featuring 200,000 token context, new effort parameter, and enhanced computer use capabilities including a zoom tool
• Testing reveals that differentiating between frontier LLMs becomes increasingly difficult as models like Opus 4.5 and Sonnet 4.5 perform similarly on real-world coding tasks, making it hard to identify meaningful capability differences
• Despite improvements in prompt injection robustness, Opus 4.5 still remains vulnerable with a 5% single-attempt success rate for attacks, highlighting the continued need for defensive application design