Claude Opus the listed price is positioned as a flagship upgrade for complex agentic coding and enterprise work, building on the Claude Opus lineage with a step-change improvement over Claude Opus 4.8. Anthropic describes it as a thoughtful and proactive model that approaches the frontier intelligence of Claude Fable the listed price at roughly half the price, and on coding and knowledge-work evaluations such as Frontier-Bench and GDPval-AA it establishes a new state-of-the-art, while still trailing Mythos the listed price on cybersecurity tasks. It is also the new default model on Claude Max and the strongest model on Claude Pro, reflecting its positioning for everyday professional use rather than a narrow research capability.

In practice, Opus the listed price is tuned for long-horizon, agency-heavy workloads: thinking is on by default, the context window supports extended multi-document reasoning, and the cataloged API limit outputs enable large generation passes. Software-engineering behavior is a clear strength, with Frontier-Bench v0.1 results showing it surpassing all other models and more than doubling Opus 4.8's performance at a lower cost per task, while on CursorBench 3.2 at max effort it lands within the listed price% of Fable the listed price's peak score at half the cost per task and delivers better performance at a given cost than other models at high, xhigh, and max effort. New platform features such as beta mid-conversation tool changes and a default fallbacks mode further support persistent, multi-turn agent sessions that maintain prompt cache continuity across tool edits.