Product context and knowledge boundary expanded
Anthropic's highlighted January changes add named product surfaces and sharpen the instruction not to infer unlisted product details that may have changed.
Practical relevance: For a support guide written against the November record, inspect two assumptions before reusing it with the January record: whether its list of named product surfaces is complete for that snapshot, and whether it treats unlisted product details as known facts. The later prompt expands the named context and directs uncertain details to official documentation. Update the guide’s source references; do not infer a feature launch date, new tool access, or improved runtime performance from this prompt change. Before → After Claude Opus 4.5 · November 24, 2025 Claude Opus 4.5 · January 18, 2026 prompt change Read the reviewed interpretation