For the forced thinking version of Claude Opus 4.6, generally, you can directly use the claude-opus-4-6 model.
Claude Opus 4.6 is built for agent programs that can operate throughout the entire workflow rather than just in a single prompt. Therefore, it is particularly efficient in handling large codebases, complex refactorings, and multi-step debugging that unfolds over time. Compared to previous generations of models, this model demonstrates deeper contextual understanding, stronger ability to decompose problems, and higher reliability in more difficult engineering tasks. In addition to coding, Claude Opus 4.6 also performs excellently in ongoing knowledge-based work. It can generate near-production-ready documents, plans, and analyses in one go, and maintain coherence in extremely long outputs and lengthy conversations. This makes it an ideal choice for tasks that require persistence, judgment, and execution capabilities, such as technical design, migration planning, and end-to-end project execution.
