Reading up on Fable 5

9 deep · digging since jun 10

U.S. Bars Foreigners From Using Anthropic’s Most Advanced A.I. Models
The U.S. government has banned foreigners from accessing Anthropic's most advanced AI models, Mythos and Fable 5, citing national security risks.
If Claude Fable stops helping you, you'll never know — Jonathon Ready
Anthropic's policy to silently degrade Claude for frontier AI tasks erodes developer trust, though the company later walked it back after outcry.

Takes

Respect to Fable 5, but this is a different league.
@DesignGuru01
Respect to Fable 5, but this is a different league.
@uihssn
Fable 5 + Goose Ads is insane – literally a full ad-creative team right in Claude Code. 1. Install the skill: npx gooseworks install --all npx gooseworks login 2. Ask Claude Fable to make ads for your brand. /goose-ads create ads for my brand <your-website>. Fable 5 pulls the ads already winning in your space and rebuilds them on-brand – your product, your palette, your copy – a whole batch, ready to test. It can ship a month of creative testing in a single prompt. This is also possible with Opus and Sonnet, but Fable's brand research is next level. Link below.
@shivsakhuja
Sonnet 5 is here. It's worse than Opus 4.8 on nearly every benchmark... Does that mean it's useless? Absolutely not. Use it with Claude Code Dynamic Workflows! 1. /model set to Sonnet 5 2. /effort set to Ultracode 3. Any complex task will kick off a dynamic workflow This will only become more powerful when Fable is back. You'll use Fable 5 as the superintelligent advisor and Sonnet 5 as the fast and efficient implementer.
@daniel_mac8
Rough estimate on $ productivity lost by Fable 5 ban: $12M per hour Frontier AI-coding daily actives, mid-2026: 5M devs Fully-loaded cost: $90/hr Work routed to Fable in 48 hours: 17.8% Fable is on average ~15% more productive Effective throughput loss per dev = 17.8% × 15% ≈ 2.7% of output 2.7% × $90/hr = ~$2.40/dev/hr × 5M devs = $12M per working hour
@garrytan
I gave Fable 5 a blank folder and made some skills/claude.md and gave it my robinhood agentic trading account with $250 in it let's see what it can do
@mweinbach
Fable 5 is now available in Claude Code and Cowork Fable is the best model I have used for coding, by a wide margin. It is a big step up, enabling less prompts and steers, more efficient token use, better code quality, better tool use, more intelligent self-verification, longer running sessions, and higher trust & autonomy. Happy coding!
@bcherny