Unverified50% confidenceEventExact time
Anthropic ran Claude Fable 5.1 on OSWorld 2.0 five times and averaged the results, and Yutori ran its own Navigator n2 three times.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/12/2026
First Seen
Valid until: 1/10/2027
Sources
Related Entities
Related Claims
UnverifiedCurrently, only 5.6 Sol, Fable 5/Mythos, and Sonnet 5 have the ability to split tasks among sub-agents.53% similarUnverifiedOn most tasks, Opus 5.5's performance is comparable to Fable 5.1.52% similarUnverifiedAnthropic released Opus 5.5, skipping Opus 5.1 and jumping directly to the 5.5 naming.52% similar
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