claude-fable-5-1 on the Claude API[1]The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
The announcement page does not date itself - it says only “September 2026” and “available today”, and the one ISO timestamp in its HTML is a page build time. The date comes from Anthropic's[3] own news index, whose card for this article carries <time>Sep 1, 2026</time>, and is confirmed independently by MacRumors[5]' article:published_time of 2026-09-01T19:15:16Z (“Anthropic today introduced Claude[2] Fable 5.1”) and by Wikipedia's[4] Claude Mythos infobox, “Claude Mythos 5.1 / September 1, 2026”.
Anthropic's[1][3] Claude Fable 5.1 model page lists a 1M-token context window, 128K max output, adaptive thinking (always on), a Jun 2026 knowledge cutoff, and says Mythos 5.1 "shares Claude Fable 5.1's specifications and pricing".
The only Anthropic[1] page that dates this announcement: in the raw markup each news card is a self-contained anchor, and this article's holds <time>Sep 1, 2026</time> beside its headline. Rated above the source because the announcement page itself gives no date at all - this is where the pin's start date comes from.
Wikipedia's infobox gives the Claude[2] Mythos stable release as “Claude Mythos 5.1 / September 1, 2026”, corroborating the date the announcement page states only as “September 2026”.
MacRumors' same-day report, article:published_time 2026-09-01T19:15:16Z, opening “Anthropic[1][3] today introduced Claude[2] Fable 5.1” - an independent witness to the launch day. It also adds the invisible text watermarking and its EU-law detection API, which Anthropic's own page does not cover.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.
Like a sugar-crazed child working their way to the bottom of a Halloween bag full of treats, A Plague Tale: Requiem is confident that the things which made the first game great will be even more delectable in ludicrous quantities. You liked massive swarms of rats? Well, how about we increase the number of them by a degree of 1,000! You enjoyed a gruesome and harrowing journey that tested the limits of your emotional resilience? Great, let’s increase your personal suffering by 200%! This follow-up to one of my favorite action-adventure games of the previous console generation turns the dials up to 11 in practically every way, and overwhelmingly benefits from those escalations despite sometimes being a bit heavy on the nihilism. With improved stealth action mechanics, a fantastic (and deeply depressing) story, and graphics that had me gawking, A Plague Tale: Requiem is an impressive glow up that’s easily worth the immense horrors it subjected me to.
