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Claude Fable 5.1 and Claude Mythos 5.1

anthropic.com

71–80 of 1001 posts

Re: Claude Fable 5.1 and Claude Mythos 5.1

#72

(I work at Anthropic) Beyond all the benchmarks, I think Fable 5.1 is a big improvement in writing style. It sounds a lot less stereotypically like other Claude models, has (imho) a much more natural style, and responds to my style instructions more reliably. More work to be done (and we will!) but reading better prose makes me so much happier. Another point I expect not to get much attention until it all happens at…

At this point, I don't believe a word from Anthropic employees; you guys have lost all the goodwill that you accumulated over months last year.

Re: Claude Fable 5.1 and Claude Mythos 5.1

#77

"Cache reads now cost 75% less, or $0.25 per million tokens." For me, at a typical 95% cache hit rate, I think my optimal context window size before autocompaction goes from ~200K to ~400K tokens. Great for longer horizon tasks.

looks like it is only for api.....

Re: Claude Fable 5.1 and Claude Mythos 5.1

#78
post #4

Bit of a discount if you're using caching: > same input and output prices, with cache reads at a quarter of the cost This should impact any long-running agent since subsequent calls can benefit from cached reads for previous transcripts.

And yet, despite this, the quota limits went down by 17%.

Re: Claude Fable 5.1 and Claude Mythos 5.1

#79

(I work at Anthropic) Beyond all the benchmarks, I think Fable 5.1 is a big improvement in writing style. It sounds a lot less stereotypically like other Claude models, has (imho) a much more natural style, and responds to my style instructions more reliably. More work to be done (and we will!) but reading better prose makes me so much happier. Another point I expect not to get much attention until it all happens at…

I hope not! Then my t-shirt is no longer accurate :D
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