Unverified50% confidenceFactExact time
Anthropic confirmed the existence of Model 2, which outperforms Mythos 5, is used internally for code, data, and agent work, and has anti-distillation protections built into Opus 5.5.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/28/2026
First Seen
Valid until: 12/27/2026
Sources
Related Entities
Related Claims
UnverifiedAnthropic states that in its most comprehensive alignment testing, Opus 5.5 is the best-performing model it has tested to date.71% similarUnverifiedThe model's intelligence is essentially unimpaired on five real Coding Agent problems, with both the Preview and 0731 versions passing all tests.64% similarUnverifiedAnthropic's choice of coding as a core product direction is deeply tied to the company's AI safety mission, because the correctness of code can be precisely verified.61% similarUnverifiedTopics such as model hallucination detection, output reliability evaluation, prompt injection attack prevention, and data privacy compliance are receiving increasing attention as AI applications are deployed at scale.60% similarUnverifiedOpus 5 finds real bugs in code reviews with higher precision and recall, improving both metrics simultaneously.60% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/956011API
curl https://kongchang.com/api/v1/knowledge/claims/956011MCP
get_claim(id=956011)