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Researcher reports Anthropic's Fable 5 performs worse after subscription rollout

Lundgren measures sharp performance decline in Fable 5 after subscription launch

1 Sep 20 5:59 PM · 5d ago · 2 posts · 2 sources · development 1 of 1

Lon Lundgren posted observations that after Anthropic made Fable 5 permanently available in subscription plans, the model's performance degraded noticeably. Measuring five different ways, he found August delivered dramatically fewer thinking tokens than July.

Lundgren measures sharp performance decline in Fable 5 after subscription launch
x.com

“After Anthropic made Fable 5 permanently available in subscription plans, I noticed a large drop in performance. The model felt dumber, and I couldn't explain why.”

Lon Lundgren

Lon Lundgren Researcher / Model UserAnthropic AI Company

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1Lundgren measures sharp performance…
Sep 21Sep 22Sep 23Sep 24yesterdaynow · 10:55 AM ET

What was reported 1 claim about this development

  1. 1 outlet Lon Lundgren (@Lon) on X

    first by Mastodon, 5d ago

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