Claude Mythos

Claude Mythos

Anthropic
Claude Opus 5

Claude Opus 5

Anthropic
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About

Claude Mythos Preview is a highly advanced AI model developed with strong capabilities in cybersecurity, particularly in identifying and exploiting software vulnerabilities. It demonstrates the ability to autonomously discover zero-day vulnerabilities across major operating systems, browsers, and critical software systems. The model can also generate complex exploit chains, including privilege escalation and remote code execution attacks. Its capabilities extend beyond vulnerability detection to reverse engineering and exploit development in both open-source and closed-source environments. Mythos Preview operates through agentic workflows, enabling it to analyze codebases, test hypotheses, and validate exploits independently. These abilities represent a significant leap compared to previous models, which struggled with exploit generation. Overall, Claude Mythos Preview highlights a new era where AI can both strengthen and challenge global cybersecurity practices.

About

Claude Opus 5 is Anthropic’s advanced everyday AI model built for coding, knowledge work, problem-solving, visual outputs, and production AI workflows. The model delivers stronger performance than Opus 4.8 at the same base price and is positioned as a cost-effective alternative close to Claude Fable 5 frontier intelligence. Claude Opus 5 supports configurable effort settings so users can optimize for intelligence, speed, or token efficiency. It performs especially well on software engineering, automation, computer use, scientific research, and knowledge work evaluations. The model is available on Claude Max, Claude Pro, Claude API, Claude Code, and other Claude platforms, with Fast mode available at a higher price. Built for developers, researchers, enterprises, and everyday Claude users, Claude Opus 5 helps teams complete complex tasks with stronger verification, careful iteration, and practical cost efficiency.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Cybersecurity researchers, ethical hackers, security engineers, and organizations focused on vulnerability detection, exploit analysis, and advanced defensive strategies

Audience

Developers, AI agent builders, software engineering teams, researchers, enterprise AI teams, knowledge workers, Claude Max users, Claude Pro users, API developers, scientific teams, automation builders, and organizations that need advanced coding, reasoning, computer use, business automation, scientific research, visual outputs, configurable effort, and cost-effective frontier-level AI performance

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$5 per 1M tokens (input)
$5 per million input tokens and $25 per million output tokens
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5

Pros & Cons from Real Users

Pros

  • Claude Opus 5 feels like a really strong model from a developer’s point of view. It is built for the kind of work I actually care about: complex coding, long-running agents, repo-level reasoning, debugging, and professional workflows that need more than a quick answer. I like that Anthropic is positioning it as a big improvement over Opus 4.8 while still making it more cost-effective than Fable 5. That matters a lot if you are building coding agents or internal dev tools where the model may run through a lot of tokens across planning, editing, testing, and iteration. The long-running agent focus is probably the biggest win. If a model can stay organized through multi-step tasks, recover from mistakes, and keep making progress without constant hand-holding, that is exactly what developers need from the next wave of AI coding tools.

Cons

  • The main downside is that I would still want to test it hard before trusting it with production code. Launch claims are useful, but real codebases are messy, full of edge cases, and usually much harder than polished benchmark tasks. It is also not the cheapest model in the world. Even if it is more affordable than Fable 5, developers will still need to route tasks carefully and avoid using a premium model for simple work that a faster or cheaper model could handle.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Company Information

Anthropic
Founded: 2021
United States
claude.ai

Alternatives

Claude Fable 5

Claude Fable 5

Anthropic

Alternatives

Claude Fable 5

Claude Fable 5

Anthropic
Claude Mythos 5

Claude Mythos 5

Anthropic
Claude Mythos 5

Claude Mythos 5

Anthropic
Claude Opus 4.6

Claude Opus 4.6

Anthropic
Claude Opus 4.8

Claude Opus 4.8

Anthropic
HCL BigFix

HCL BigFix

HCL Software
Claude Sonnet 5

Claude Sonnet 5

Anthropic
Claude Opus 4.5

Claude Opus 4.5

Anthropic

Categories

Categories

Integrations

Claude
Claude Code
Claude Cowork
Claude Desktop
Claude Max
Claude Pro
Anything
CLion
CSS
Claude for Healthcare
IntelliJ IDEA
Microsoft Foundry
OpenCode
Orchids
Scala
Skymel
Springhub
Swift
XML
Yonoo

Integrations

Claude
Claude Code
Claude Cowork
Claude Desktop
Claude Max
Claude Pro
Anything
CLion
CSS
Claude for Healthcare
IntelliJ IDEA
Microsoft Foundry
OpenCode
Orchids
Scala
Skymel
Springhub
Swift
XML
Yonoo
Claim Claude Mythos and update features and information
Claim Claude Mythos and update features and information
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Claim Claude Opus 5 and update features and information