Claude Opus size speculation fuels debate

This reads like classic frontier-model numerology: a confident-sounding estimate that says more about community curiosity than the actual system design. For developers, the only actionable signal is whether Opus justifies its premium on coding, agentic work, and long-context tasks. Anthropic’s official Opus messaging focuses on 1M-token context, agent workflows, and coding performance, not parameter counts. If Opus uses sparse or MoE-style routing, raw total parameters would be a weak proxy for cost, latency, or quality. The thread reflects a real developer concern: transparency and pricing matter almost as much as benchmark wins. Until Anthropic publishes architecture details, any 5T figure should be treated as speculation, not fact.