Unverified50% confidenceBenchmarkExact time
Benchmark tests show that Fable 5.2 comprehensively beats the previous flagship Opus 5.5 on major leaderboards such as Frontier Code 2.0 and Frontier Suite (69.9 points).
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
11/9/2026
First Seen
Valid until: 11/23/2026
Sources
Related Entities
Related Claims
UnverifiedOn the Frontier Code programming benchmark, Opus 5.5 beat Astra using the default tier, with a per-task cost of only one-fifth that of its competitor.67% similarUnverifiedCompared to Claude Fable 5.1, Opus 5.5 shows a slight lead in WANDR score.65% similarUnverifiedClaude Fable 5.2 scored 49.1% on the FrontierCode 2.0 benchmark, ranking first.64% 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.64% similar
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