Anthropic released Claude Opus 5, a new model offering near-frontier performance at lower cost point than previous generation models. Discussion on Hacker News noted 38% improvement in English tokenization efficiency versus prior tokenizer.
Anthropic announced the release of Claude Opus 5, a new large language model offering improvements in coding and professional tasks. The model represents a step change upgrade for the Opus tier powering long-running agents.
Anthropic announced Claude Opus 5 with capabilities close to Fable 5's across many areas, including enhanced cybersecurity safeguards. The release follows government cybersecurity concerns raised about AI systems.