Unverified50% confidenceFactExact time
Anthropic simultaneously released Opus 5.5 and Sonnet 5.5, and official benchmarks show that the two score very close to each other on agentic coding tasks.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/12/2026
First Seen
Valid until: 1/10/2027
Sources
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