Short, dated notes on what changed in the Opus 5 / Honeycomb story. Full context, tables, and FAQ live on the Claude Opus 5 leak tracker. Tags mark whether an item is Confirmed, Reported, or Rumor.
Anthropic has not officially announced Claude Opus 5. There is still no public model card, API model ID, pricing page, or news post naming Opus 5. Absence of an announcement is the clearest confirmed fact on this tracker.
Aggregator write-ups and community posts mention cloud or catalog references involving Opus 5–style model names (including Vertex AI). Primary screenshots are scarcer than for the Cursor Honeycomb listing; confidence stays lower until durable artifacts are independently verified.
Screenshots and threads about Claude Honeycomb EAP spread across X, Hacker News, and developer forums. Secondary tech coverage (including The New Stack) framed Anthropic as declining to comment on the Cursor sighting.
Developer screenshots show an unreleased Anthropic research model labeled Honeycomb EAP in Cursor’s model picker, reportedly with a 1M context window and extra-high effort mode, then removed within hours. This is the strongest public artifact in the current “Opus 5” rumor cycle — still not an official Opus 5 product name.