// The New Stack · 10 June 2026

Fable 5: Guardrails and burn rate are annoying users, who say it’s still better than Opus 4.8

On Tuesday, Anthropic debuted Fable 5, the first — and much-anticipated — generally available Mythos-class model. Anthropic says it can work The post Fable 5: Guardrails and burn rate are annoying users, who say it’s still better than Opus 4.8 appeared first on The New Stack.

The New Stack

@the-new-stack · Meredith Shubel

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