Expired80% confidenceFactTime unknown
Sonnet 4.6 performs on par with Opus on the 'needle-in-a-haystack' test.
1
Sources
80%
Confidence
Medium-term (~90 days)
Relevance
5/31/2026
First Seen
Valid until: 8/29/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedThe test chose Claude Sonnet 4.6 rather than Opus 4.7 as the baseline, on the grounds that Opus is too strong to provide a meaningful comparison.77% similarUnverifiedAnthropic stated that Sonnet 4.6 performs on par with Opus 4.6 in terms of resistance to prompt injection.76% similarUnverifiedCompared to Opus 4.6, Sonnet 4.6 performs nearly on par on most benchmarks, but with faster inference speed and lower call costs.74% similarUnverifiedSonnet 4.6 scored 72.5% on the OS World Verified benchmark.72% similarUnverifiedClaude Sonnet 4.6 scored higher than Opus 4.6 on the GDPVal AA benchmark.71% similar
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