We Tested Anthropic’s Fable 5 for a Week

Name: We Tested Anthropic’s Fable 5 for a Week
Uploaded: 2026-06-09T00:00:00.000Z
Channel: Every
Description: Dan Shipper, CEO of Every, spent a week testing Anthropic’s Fable 5, a Mythos-class model that scored a 91 out of 100 on Every’s senior-engineer benchmark, compared with a 63 for Opus 4.8 and a 62 for

Videos·video·Fable-5 evidence 85%

Dan Shipper, CEO of Every, spent a week testing Anthropic’s Fable 5, a Mythos-class model that scored a 91 out of 100 on Every’s senior-engineer benchmark, compared with a 63 for Opus 4.8 and a 62 for

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created 2026-06-09by Every

Fable-5 attribution

YouTube video — Explicit model id: “claude-fable-5”. Evidence: title “We Tested Anthropic’s Fable 5 for a Week”; desc “Dan Shipper, CEO of Every, spent a week testing Anthropic’s Fable 5, a Mythos-class model ”. (85% confidence)

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