# Anthropic — Claude Mythos 5

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## Model

- Name: Claude Mythos 5
- Company: Anthropic (anthropic.com)
- Launch post: not held by this record
- Announced: not stated
- Launch source: not stated
- Launch chosen by: not stated
- Released (per models.dev): not stated
- Listed (per OpenRouter): not stated
- Open weights: not stated
- Posts about it: 1
- Outlets named under its posts: 6
- Also written: Mythos 5
- Price: scans with Mythos 5 are billed as standard token usage under your existing plan, with no separate add-on — from https://forck.live/items/7419-bringing-the-cybersecurity-capabilities-of-claude-mythos-5-to-more-defenders

## Posts about it

_Anthropic's own posts whose title names Claude Mythos 5, and its launch post, in the record's order: dated newest first, undated last. The record reads the newest 50 first-party posts mentioning the model, every company's together, so a model mentioned more often than that lists the newest of them._

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in this order before any others:

    Company · Announced · Category · Coverage · Announcement · Group · Source · Record

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the announcement.

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than a how-to, a customer story, a changelog listing or a staffing note.

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entry itself so it holds where the groups are headings and where they are not.
One of: `models`, `covered`, `announcements`, `routine`.

Anything after `Record` is held detail that only some announcements carry.

### Anthropic — Bringing the cybersecurity capabilities of Claude Mythos 5 to more defenders

- Company: Anthropic (anthropic.com)
- Announced: 2026-08-21
- Category: capability-change
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://claude.com/blog/bringing-claude-mythos-5-to-more-defenders
- Record: https://forck.live/items/7419-bringing-the-cybersecurity-capabilities-of-claude-mythos-5-to-more-defenders
- Subject: Claude

Anthropic announced that Claude Mythos 5 is now available in Claude Security for Claude Enterprise customers, and is being integrated into partners' cyber defense tools. The company also launched a $35 million Defender Advantage Fund for open-source security and is expanding its Cyber Verification Program to include broader dual-use capabilities on Opus and Sonnet, with Mythos-class access to follow.

## Who reported on it

_Outlets this record can name and link, under the first-party post each one covered. Their number is `Outlets named under its posts` above, and the rows are not totalled again. A post's own `Coverage` can be higher: it counts outlets the signal saw that this record cannot name and link._

### On: Bringing the cybersecurity capabilities of Claude Mythos 5 to more defenders

Record: https://forck.live/items/7419-bringing-the-cybersecurity-capabilities-of-claude-mythos-5-to-more-defenders

- Cyber Security News — Claude Mythos 5 Now Available in Claude Security for Vulnerability Scanning: https://cybersecuritynews.com/mythos-5-claude-security-scanning
- MarkTechPost — Anthropic Brings Claude Mythos 5 to Claude Security: Enterprise Teams Get Frontier Vulnerability Scanning Without Direct Model Access: https://marktechpost.com/2026/08/21/anthropic-brings-claude-mythos-5-to-claude-security
- RuntimeWire — Anthropic puts Claude Security's GitHub scanner behind an Enterprise login: https://runtimewire.com/article/anthropic-claude-security-mythos-5-github-scans
- The Decoder — Anthropic puts its most powerful model Claude Mythos 5 to work for cyber defense: https://the-decoder.com/anthropic-puts-its-most-powerful-model-claude-mythos-5-to-work-for-cyber-defense
- The New Stack — Anthropic brings Mythos 5 to its Claude Security vulnerability scanner: https://thenewstack.io/anthropic-mythos-claude-security
- Unite — Anthropic Deploys Claude Mythos 5 in Security Tools, $35M Open-Source Fund: https://unite.ai/anthropic-deploys-claude-mythos-5-in-security-tools-35m-open-source-fund

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Record: https://forck.live/models/claude-mythos-5
Catalogue: https://forck.live/llms.txt
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