Anthropic's Opus 5 is about token efficiency, not a capability leap

Models are improving quickly, but the cheaper options are often good enough. https://arstechnica.com/ai/2026/07/anthropics-opus-5-is-about-token-efficiency-not-a-capability-leap/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social