// The Consistency Illusion // Multi-agent debate can make agents agree on the final answer while their underlying reasoning stays misaligned. This work finds that consensus on the output hides disagreement on the path that produced it, and you only ever see the output. A lot
AI
-
Anthropic’s Claude Mythos goes from dangerous to public in two months
By
–
Claude Mythos went from “too dangerous to release” to publicly available (with some extra guard rails) in two months. And y’all fell for Anthropic’s whole routine. Again.
-
Fable’s jump in capability: works 9+ hours on 15-page design
By
–
I've had access to Fable for a bit. A genuine jump in capability, I could feed it a 15 page design document for a project and it would work for 9+ hours and deliver terrific results. But working with it is weird & weirder is coming Lots of examples:
-
Claude 5 Fable live in Germany with insane evals testing
By
–
Claude 5 Fable live, even in germany. Insane evals. Tessting time
-
See how Claude Fable 5 compares across every model
By
–
See how Claude Fable 5 compares across every model: http://
cursor.com/evals -
Claude Fable 5 in Cursor achieves 72.9% on CursorBench
By
–
Claude Fable 5 is now available in Cursor. It sets a new state of the art on CursorBench at 72.9%, 8 points above the previous best.
-
Claude 5 Fable Benchmarks: Significant Jump Over Mythos
By
–
Claude 5 Fable Benchmarks! Holy moly, significant jump even to Mythos
-
Anthropic lance Claude Fable 5, IA de pointe
By
–
Anthropic just released Claude Fable 5, calling it the company's "next generation of intelligence for the hardest knowledge work and coding problems." "It is state-of-the-art on nearly all tested benchmarks of AI capability, showing exceptional performance in software
-
Memories of launches of Claude Opus 3, Sonnet 3.5, and Opus 4.5
By
–
I've been at Anthropic through every model launch. There's been a few cases I can remember of a launch that stands out and marks a step-change in how we use models:
— Alex Albert (@alexalbert__) 9 juin 2026
– Claude Opus 3
– Claude Sonnet 3.5
– Claude Opus 4.5
And now Claude Fable 5.
With Fable, the model stopped… https://t.co/PVivAMNL1XI was at Anthropic for every model launch. There have been a few cases that I remember where a launch stood out and marked a step change in how we use models:
– Claude Opus 3
– Claude Sonnet 3.5
– Claude Opus 4.5
And -
Fable 5 and Opus 4.8: Cyber and Bio Safety
By
–
What "safe for general use" means: Fable 5 includes classification blocks for cyber and bio threats to prevent severe harm. Queries in these areas are instead redirected to Opus 4.8 (we make this clear in the product every time).