Anthropic's writing and knowledge-work ceiling at $10/$50. #1 on Arena text (Aug 12). Worth it for long-form and research; too expensive as a default workhorse.
“Best writer on the board. Not the value pick.”
Reserve for writing/research; use Opus 5 or Sonnet 5 for volume.
Training data policy: API data not used for training by default (opt-out / ZDR available)
DPDP Act (India): No India-resident inference by default. Use DPA + region controls.
Data residency: US, EU
API available globally