Unverified60% confidenceBenchmarkExact time
On agentic coding tasks, Fable 5.2's score jumped substantially over Fable 5.1 and is higher than Opus 5.5.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
11/10/2026
First Seen
Valid until: 2/8/2027
Sources
Claude Fable 5.2 Released: Three Major Capability Leaps and a Pricing Shock
bilibiliPigfg00711/10/2026
Related Entities
Related Claims
UnverifiedOn the agentic coding Frontier Code 2.0 test, Fable 5.2 scored second highest, behind only Opus 5.5.79% similarUnverifiedThe output quality of this mysterious checkpoint shows a substantive improvement compared with the existing Opus 5.5.77% similarUnverifiedAnthropic's internal testing showed that Fable 5.1 as an advisor paired with Opus 5.5 executing the main task improved performance by 1.7 percentage points compared with using Opus 5.5 alone, but increased cost by 2.1 times.75% similarUnverifiedOpus 5.5 has already reached the level of the previous flagship Faber 5.1 on most tasks.74% similarUnverifiedCompared to Claude Fable 5.1, Opus 5.5 shows a slight lead in WANDR score.74% similar
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