Launch · 2 min read
Claude Opus 4.5 Released: Tops Coding Benchmarks While Slashing Prices
Anthropic released Opus 4.5 on November 24, 2025, completing the 4.5 family and retaking the coding crown.
Tag: Claude
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Launch · 2 min read
Claude Sonnet 4.5 Released: The Coding Model That Works Autonomously for 30 Hours
Anthropic released Claude Sonnet 4.5 on September 29, 2025, billing it as the world's best coding model with sharply higher long-task autonomy.
Launch · 2 min read
Anthropic Releases Claude 4: Opus 4 and Sonnet 4 Debut Together
At its first Code with Claude developer conference, Anthropic unveiled Claude Opus 4 and Sonnet 4, built for hours-long autonomous coding.
Research · 1 min read
Anthropic Gives LLMs a 'Brain Scan': An Interpretability Breakthrough in Tracing Thoughts
In March 2025, Anthropic published interpretability research that first 'traces' Claude's internal thought circuits, revealing how LLMs think and why they hallucinate.