AI & Tech

Anthropic's super bug-finding Mythos model is going into Cisco and IBM products

Anthropic has started extending access to its bug-finding Mythos model by allowing Cisco and IBM to make it part of their security products.

✦ Extractive summary — built from the sources' own reporting•From 1 source•1 min read•Updated November 10, 2026, 12:00 AM UTC
Key points
  • IBM says it will use Mythos “to uncover weaknesses traditional scanners miss, determine which pose real risk and generate fixes for developer approval.” We have asked Anthropic if these integrations represent a decision to open Mythos to more users in more ways.
  • Cisco announced its integration today at an event in Melbourne, Australia, where it revealed that the red teaming tools in its AI Defense suite, which looks for weaknesses and inappropriate activity in AI models, agents, and applications they power, will be able to call Mythos to test customers’ setups.
  • The Cisco deal exposes the functionality of Mythos to end-users, without letting them use the model itself.

That may be because a few hours after Cisco told us about its use of Mythos, IBM announced that it will also integrate Anthropic’s model into a product – namely its Concert tool, which uses AI to scan applications for risks and weaknesses.

Additional details
  • Also on Monday, Anthropic introduced version 5.2 of Mythos and Fable, which the company says generate outputs up to 30 percent faster than version 5.1 yet cost less: $8 per million input tokens and $40 per million output tokens.
  • This included developing novel evaluations that give deeper insight into specific concerning behaviors like sandbox escapes.” After those tests, the company concluded “high-stakes risks from misalignment remain low, and the model performed as well as, or better than, our recent models on most alignment measures.
  • He said the tool is now “super-charged by Mythos” and will identify more danger that AI Defense will then address.
  • Anthropic says it “ran extensive prerelease safety testing on the model that underlies Fable 5.2 and Mythos 5.2.
  • “At a very high level, AI Defense has the ability to look at models and break them,” said Jeff Schultz, Cisco’s senior vice president for portfolio strategy and marketing.

How this summary was made: extractive summary — built from the sources' own reporting. It is drawn only from the reporting of the sources listed below — read the originals for full detail. How we summarize →

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