A three-second demonstration teaches a new physical task with no training

Claim

Generalist's GEN-1.5 learns a new physical task from a physical prompt, a three-to-twelve-second demonstration dropped into its context window, scoring 59% with zero gradient updates and 83% after five minutes of data, with improvised tool use emerging unprompted from pretraining.

Reported metric: 59% zero-shot / 83% after 5 min

Reporting date: 2026-08-21 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

• Welcome to August 21, 2026 (theinnermostloop.substack.com)