Claude’s most advanced models for coding and knowledge work. Their research capabilities also offer an early glimpse of how AI models will contribute to scientific progress.

Hey PH community 👋

Excited to hunt Claude Fable 5.1 today!

Anthropic has shipped a lot of models, but this one reads like a direct response to what builders kept asking for: better results on long, agentic work, real answers on price and data retention, and safeguards that get out of the way for legitimate use.

Here's a terrific example of what it can do. Alex gave it a picture of a property lot. It designed a house for the lot, rendered it, and produced a cinematic walkthrough 🤯

The pricing move is what stands out to me.

Cache reads got cheaper, so typical workloads cost about 25% less than Fable 5, and highly agentic runs can save up to 45%. Pair that with Low and Medium effort modes that match or beat Fable 5 output, and you're getting more model for less money.

Cybersecurity false positives are down 60% too, which anyone who has hit a wall mid-task will appreciate.

It's also live day one across the major AI gateways, including Netlify's, so you can drop it into an existing stack without touching your keys or config.

Go take it for a spin and tell the team what you build in comments 🚀

@thisiskp_ Just restarted Code and got Fable 5.1 as selection. Yay!
If what you say is true then I will start using Fable 5.1 at high as orchestrator with lower effort Fable 5.1 subagents for research and easier tasks (I was using Opus before). Does it make more sense from the token economy pov?

Nothing against Opus 5.0, he is a hard worker too but Anthropic, that child of yours has got some serious ADHD. 5.1 of opus can't come soon enough.

i'm seeing things about fable i couldn't believe