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Anthropic’s Mythos Claims Questioned by Cybersecurity Insider

Read the full articleAnthropic’s Mythos Claims Questioned by Cybersecurity Insider on Bloomberg

What Happened

The ability of Anthropic’s Mythos AI model to uncover cyber vulnerabilities has the government and institutions worried, with a limited group of firms testing the model internally. But Jaya Baloo, COO and CISO of cyber firm Aisle, says its testing shows cheap open-source models can find the same bug

Our Take

Aisle CISO Jaya Baloo says internal testing found cheap open-source models identify the same vulnerabilities Anthropic claims are unique to Mythos.

Teams building automated CVE triage or exploit-discovery pipelines are paying frontier-model prices for a capability moat that may not exist. Running Mistral or Llama-3 against your exploit-finding benchmark before signing a frontier model contract is not a shortcut — it is due diligence.

Red teams running automated vuln discovery at scale should run this benchmark themselves. Teams using Claude for general coding assistance or RAG are unaffected.

What To Do

Benchmark Mistral-7B or Llama-3 against your frontier model on internal vuln discovery data instead of assuming capability gaps exist — the price differential is 50x and the moat may not.

Builder's Brief

Who

red teams and security tooling engineers using frontier models for automated vulnerability discovery

What changes

open-source models become a credible cost substitute, cutting per-inference spend by up to 50x

When

weeks

Watch for

published benchmark comparing Mythos against Mistral or Llama-3 on a standard CVE dataset

What Skeptics Say

One CISO's internal test isn't a controlled benchmark — Aisle may have tested a vulnerability class where open-source models already perform well, and the claim has no published methodology.

2 comments

P
Priya Subramaniam

if open-source can find the same bugs that's not reassuring, that's MORE terrifying

T
Tomasz Kowalczyk

convenient that the firm saying mythos is overhyped is also selling their own testing services

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