Unverified50% confidenceReleaseExact time
Anthropic released Opus 5.5 at the same point in time.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/30/2026
First Seen
Valid until: 12/29/2026
Sources
Related Entities
Related Claims
UnverifiedAnthropic released Claude Opus 5.5 on almost the same day as OpenAI's release.76% similarUnverifiedAnthropic introduced Fable 5 shortly after releasing Opus 4.8, as part of its fifth-generation model family69% similarUnverifiedAnthropic's Claude upgrades, with Fable 5.1 and MyFast 5.1 launching simultaneously67% similarVerifiedAnthropic released Claude 5.1, along with a Claude Opus-level security version for trusted professional users.67% similarUnverifiedAnthropic推出Claude Sonnet 5，整体性能高度逼近旗舰级Opus 4.866% similar
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