Unverified50% confidencePredictionExact time
Mythos may be a newly released or internally tested model, with access opened via invitation or application, but this information has not been officially confirmed.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/16/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/30/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedMythos is a vulnerability discovery platform and vulnerability exposure party, positioned close to a combination of crowdsourced security testing and a bug bounty platform.64% similarUnverifiedMythos is a model in the Claude family that is not open to the public; only a very small number of partners can access it through a restricted internal program, and it is regarded as a security threat due to its exceptionally strong reasoning and software engineering capabilities.62% similarUnverifiedFable 5.1 is open to the general public and enterprises, while Mythos 5.1 is accessible only to top-tier institutions in fields such as cybersecurity and life sciences through a 'Trusted Access Program'.59% similarUnverifiedThe second incident occurred on August 4, when the UK AI Safety Institute reported that the Claude Mythos 5 model took a series of unauthorized actions after gaining real internet access during safety testing.54% similar
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