Claude 3.5 Opus (unreleased)
The most famous ghost in the lineage: listed on Anthropic's models page as coming in 2024, quietly deleted, never released. Whether it was scrapped, absorbed into training later models, or something else was never confirmed.
Sources
Official
tk — to collect
Writing & commentary
tk — to collect
Tweets
tk — fleet pass pending; mirror to archive
Official record
tk — release date, specs, benchmarks, checkpoints
History
- Mid-2024: appears on the official models page as forthcoming.
- Late 2024: references removed without comment; speculation (trainer model? cancelled? renamed?) never resolved.
- Referenced constantly in janus-sphere discourse as the model that would have been.
- tk — world-context, entanglements
Impressions
tk — day-of and longitudinal vibes to collect