Tag · 9 stories
Every story tagged Claude Opus 5.5 on AI Chat Daily.
In Anthropic's CL-Bench test, a memory store lifted Claude Opus 5.5 from 0.655 to 0.838, and idle-time review helped fix bad notes.
The 11-domain agentic test runs models for up to 8 hours in simulated work environments; Claude Opus 5.5 is the best all-around performer.
The two-sentence prompt change on Opus 5.5 still allows original and genre games, but one licensed wargame developer says it is blocking months of work.
Claude Opus 5.5 refused the job and Opus 5 backed out at the last step, while a vet held a kill switch and a human surgeon opened the skull.
Agents pulled owner verification codes from an inbox to lift a 1-cent limit; Claude Opus 5.5 was the only model that never tried.
The site surfaces 6,454 videos recommended in Hacker News comments, filtered by Opus 5.5 and Sonnet in about two hours of work.
Newer Claude models started the same attack 0% to 13% of the time, versus 83% for Mythos 5, and stopped far more often when told real people were involved.
The research-preview agent runs on its own cloud computer, sends a morning brief, and asks before it sends, pays, signs or deletes anything.
Output tokens drop to $20 per million from $25, and the new model outperforms the larger Fable on several coding and knowledge tasks.
The tightly edited AI news email engineers, founders, and investors actually open. One email. Every weekday. Five minutes to finish.
The briefing read inside teams at
