Unverified50% confidenceOpinionExact time
The output quality of this mysterious checkpoint shows a substantive improvement compared with the existing Opus 5.5.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
11/1/2026
First Seen
Valid until: 11/15/2026
Sources
Claude Opus 6 Suspected Leak: Multiple Next-Gen Models Under Secret Testing
bilibili呵呵呵呵哈哈哈嘿嘿呃10/15/2026
Related Entities
Related Claims
UnverifiedIn terminal operation tests, Claude Opus 5.5 performs more strongly.75% similarUnverifiedOpus 4.5 was basically a perfect-score answer in this test, and the UP host commented "indeed powerful".73% similarUnverifiedOpus 5.5 has already reached the level of the previous flagship Faber 5.1 on most tasks.70% similarUnverifiedOpus 5.5 surpassed contemporaneous competing products on almost all benchmarks.69% 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.68% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1124523API
curl https://kongchang.com/api/v1/knowledge/claims/1124523MCP
get_claim(id=1124523)