Unverified50% confidenceFactExact time
Fable 5.2 and Mythos 5.2 are two versions of the same underlying model; the Fable version has strong safety protections, and the Mythos version requires applying for use through the official verification program.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
11/10/2026
First Seen
Valid until: 2/8/2027
Sources
Related Entities
Related Claims
UnverifiedThe Reddit user added that they also received Mythos 5.2 and Fable 5.2.80% similarUnverifiedFable 5.1 has stronger coding capabilities.70% similarUnverifiedFable 5.2 scored 89.3 on the operating-system control benchmark OSWorld 2.1, higher than Astra's 79.5 and Opus 5.5's 87.62% similarUnverifiedEarly testers of Fable 5.2 include companies such as Vercel, Shopify, Datadog, Unity, Uber and Oracle.62% similar
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