Anthropic’s Opus 5 is about token efficiency, not a capability leap
Summary
Ars Technica analyzes Anthropic’s Opus 5, noting that the update emphasizes token efficiency and cost savings rather than a major capability leap. The article compares Opus 5 to other models (Fable, Mythos, GPT-5.6-Sol), discusses pricing and performance, and highlights the broader trend toward model routers and open-weight alternatives.