Unverified60% confidenceEventExact time
A user reported that Claude Mythos 5 briefly appeared as a model option in Anthropic's API before being quickly pulled.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026
Sources
Related Claims
UnverifiedClaude Fable 5 and Claude Mythos 5 have officially launched as Anthropic's most advanced AI models to date.72% similarUnverifiedAnthropic的Fable 5内部代号为Mythos 5，是其前沿研究级模型70% similarUnverifiedClaude Fable本质上是Claude Mythos 5的公开版本，内置了更多网络安全防护机制67% similarVerifiedAnthropic正式发布Claude 5系列首款模型，命名为Claude Fable 566% similarUnverifiedAnthropic通过受控扩展而非直接公开发布的方式推进Claude Mythos新模型65% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/51312API
curl https://kongchang.com/api/v1/knowledge/claims/51312MCP
get_claim(id=51312)