Expired70% confidenceReleaseExact time
Anthropic has recently been reported to be simultaneously releasing two models, Opus 5.5 and Sonnet 5.5.
4
Sources
70%
Confidence
Short-term (~14 days)
Relevance
9/29/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/13/2026(expired)
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