Mythos

Extracted Attributes

• Developer

  Anthropic

• Comparison

  Substantially beyond the capabilities of Claude Opus

• Model Type

  Large Language Model (LLM) / Generative AI

• Release Status

  Withheld from public release due to safety concerns

• Key Capabilities

  Cybersecurity, software engineering, multi-step infiltration, and agentic workflows

• Performance Metric

  73% success rate in expert-level Capture the Flag (CTF) tasks

Timeline

• Reports detail the capabilities of Claude Mythos, including its 73% success rate in expert-level Capture the Flag tasks and its superiority over Claude Opus. (Source: Web search results (Pluralsight))

  2026-04-16

• Approximate timeframe for the discovery of critical vulnerabilities in Linux, OpenBSD, and FFmpeg by Mythos, leading to the model being withheld. (Source: Document fccfeb90-332d-499c-b8d7-0026207a2740)

  2026-01-01

• Anthropic establishes Project Glass Wing, a 100-day cybersecurity initiative to patch vulnerabilities found by Mythos. (Source: Document fccfeb90-332d-499c-b8d7-0026207a2740)

  2026-01-15

Myth

Myth is a genre of folklore consisting primarily of narratives that play a fundamental role in a society. For scholars, this is totally different from the ordinary sense of the term myth, meaning a belief that is not true, as the veracity of a piece of folklore is entirely irrelevant to determining whether it constitutes a myth. Myths are often endorsed by religious and secular authorities, and may be natural or supernatural in character. Many societies group their myths, legends, and history together, considering myths and legends to be factual accounts of their remote past. In particular, creation myths take place in a primordial age when the world had not achieved its later form. Origin myths explain how a society's customs, institutions, and taboos were established and sanctified. National myths are narratives about a nation's past that symbolize the nation's values. There is a complex relationship between recital of myths and the enactment of rituals.

Web Search Results

• Mythos | Chronicle Books

  Fry’s retellings balance faithful respect for the original myths with a modern voice that makes these ancient stories feel immediate, vivid, and irresistibly entertaining. His distinctive wit and curiosity illuminate both the humor and the darker complexities of the myths, offering fresh insight into stories that have shaped art, literature, and culture for thousands of years. Beautifully produced and featuring classical artwork inspired by the myths, Mythos is both a captivating narrative and a stunning volume to treasure. Whether you are encountering Greek mythology for the first time or rediscovering its timeless tales, this remarkable book offers an unforgettable journey into the origins of Western storytelling. [...] else $35.00 | Buy Now # Mythos Mythos Mythos Mythos interior Mythos interior Mythos interior Mythos interior Mythos—the first installment in the internationally bestselling Greek Myths series—is a witty, vivid retelling of the great stories of Greek mythology by celebrated writer and storyteller Stephen Fry. In Mythos, the ancient stories of the Greek gods are brought thrillingly to life by one of the great storytellers of our time. Beloved writer, actor, and comedian Stephen Fry retells the legendary myths of ancient Greece with warmth, humor, and extraordinary narrative flair, introducing readers to the dazzling world of gods, titans, and heroes. [...] A MODERN CLASSIC OF MYTHOLOGY: The first volume in the Greek Myths Series, introducing the dramatic origins of the Greek gods and making these ancient tales accessible to modern readers. Don’t miss the full series, including Heroes, Troy, and Odyssey. TIMELESS STORIES OF GODS AND TITANS: Celebrating the thrills, grandeur, and unabashed fun of the Greek myths, Mythos breathes life into ancient tales from Pandora's box to Prometheus's fire, featuring iconic figures such as Zeus, Hera, Athena, and Apollo. BEAUTIFULLY PRODUCED EDITION: A collectible volume featuring full-color classical artwork inspired by the myths, along with notes and commentary from the author.

• mythos, mythoi- WordWeb dictionary definition

  Get WordWeb for Mac OS X; also try the iPhone/iPad app Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps Noun: mythos (mythoi) 1. A traditional story accepted as history; serves to explain the world view of a people "The creation mythos is central to many cultures"; - myth 2. Myths collectively; the body of stories associated with a culture, institution or person "Greek mythos has had a lasting influence on Western literature and art"; - mythology 3. An orientation that characterizes the thinking of a group or nation "The American mythos of individual success through hard work"; - political orientation, ideology, political theory Derived forms: mythoi See also: conservative, liberal [...] Derived forms: mythoi See also: conservative, liberal Type of: accumulation, aggregation, assemblage, collection, orientation, story Encyclopedia: Mythos mythologisation mythologise mythologist mythologization mythologize mythology mythomania mythopoeia mythopoeic mythopoesis mythos Mytilene mytilid Mytilidae Mytilus Mytilus edulis myxedema Myxine Myxine glutinosa Myxinidae Myxiniformes

• MYTHOS Definition & Meaning | Dictionary.com

  # mythos ## noun ### plural the underlying system of beliefs, especially those dealing with supernatural forces, characteristic of a particular cultural group. myth. mythology. ## noun the complex of beliefs, values, attitudes, etc, characteristic of a specific group or society another word for myth mythology ## Etymology ### Origin of mythos 1745–55; < Greek mȳ́thos; see myth ## Example Sentences Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com. Aside from the horse, the wolf is probably the four-legged animal most associated with the mixed American mythos of rugged independence and family values. From The Wall Street Journal • Dec. 16, 2025 Logo link to The Wall Street Journal [...] Logo link to The Wall Street Journal The fabric has long been shorthand for rugged individualism and the everyday workwear mythos of the American frontier — in other words, a different, portable performance of Americana. From Salon • Aug. 22, 2025 Logo link to Salon To know the “Alien” mythos is to know what happens to most of those whose paths cross with that of Sigourney Weaver’s Ellen Ripley: the survival rate is generally very low. From Salon • Aug. 26, 2024 Logo link to Salon The result is a movie that expands the mythos of the various kaiju creatures — called Titans in the MonsterVerse — and introduces a new, sinister villain. From Los Angeles Times • Mar. 29, 2024 Logo link to Los Angeles Times [...] Logo link to Los Angeles Times Hinduism had started off as a polytheistic religion, a set of tales about warrior gods and battles similar in many ways to the Greek mythos. From "Zero: The Biography of a Dangerous Idea" by Charles Seife Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023 Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. Over 500,000 expert-authored dictionary and thesaurus entries IXL Learning's Dictionary Media Group reaches over 500,000,000 learners each year Essential reference for synonyms and antonyms

• MYTHOS Definition & Meaning - Merriam-Webster

  Est. 1828 Definition Definition Synonyms Example Sentences Word History Entries Near + Cite this EntryCitation + More from M-W Show more Show more + Citation + More from M-W + To save this word, you'll need to log in. Log In # mythos ## noun my·​thos ˈmi-ˌthōs How to pronounce mythos (audio)") plural mythoi ˈmi-ˌthȯi How to pronounce mythos (audio)") Synonyms of mythosnext 1 a : myth sense 1a b : mythology sense 2a 2 : a pattern of beliefs expressing often symbolically the characteristic or prevalent attitudes in a group or culture 3 : theme, plot the starving artist mythos ## Synonyms of mythos Relevance myth legend See All Synonyms & Antonyms in Thesaurus ## Examples of mythos in a Sentence [...] ## Word History Etymology borrowed from Greek mŷthos "utterance, speech, discourse, tale, narrative, fiction, legend," of obscure origin First Known Use 1753, in the meaning defined at sense 1a Time Traveler The first known use of mythos was in 1753 See more words from the same year ## Browse Nearby Words mythopoetry mythos mythus See all Nearby Words ## Cite this Entry “Mythos.” Merriam-Webster.com Dictionary, Merriam-Webster, Accessed 20 Apr. 2026. Copy Citation ## More from Merriam-Webster on mythos Nglish: Translation of mythos for Spanish Speakers Last Updated: - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged [...] ## Examples of mythos in a Sentence according to one creation mythos, humans sprang from the forehead of a god the Superman mythos has long since become ingrained in popular American culture Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

• What is Claude Mythos?

  ## What is Claude Mythos? Claude Mythos, developed by Anthropic, is a large language model (LLM). While it was trained to be a general-purpose model, it is particularly useful in completing cybersecurity-related tasks that involve multiple steps. It is also useful for assisting in software engineering, long-running agentic workflows, and industry research. According to Anthropic, Mythos's abilities in all these areas are "substantially beyond those of any model (they) have previously trained," including their current heavyweight model, Claude Opus. The company said Mythos's "powerful cybersecurity skills" were a happy accident of improving the model's coding and reasoning ability. [...] According to AISI's research, while Mythos was not significantly better at individual cybersecurity tasks compared to other models, it did complete difficult multistep infiltration challenges with a high level of frequency, including some that no other AI had completed to date. When it came to expert-level Capture the Flag tasks (CTF), AISI found Mythos Preview succeeded 73% of the time, shown below. Please set an alt value for this image... AISI’s ultimate conclusion was that Mythos would be good at exploiting systems with “poorly defended systems” and that real-world systems, unlike the testing conditions, had active defenders and defensive tooling that would make success far more difficult. [...] # What is Claude Mythos? Claude Mythos is a generative artificial intelligence (Gen AI) model developed by Anthropic. It excels at completing complex, multi-step cybersecurity tasks. Adam Ipsen By Adam Ipsen Apr 16, 2026 • 4 Minute Read Please set an alt value for this image... These days, the market is flooded with AI models to use. You’ve got GPT, Gemini, Llama, Mistral, and of course, the ever-popular Claude. Now, Anthropic offers a new general-purpose model called Claude Mythos. Like with any new model, there are important things you should know about it, such as capabilities, pricing, and limitations. In this article, I’m going to demystify what Claude Mythos is and how it matches up against similar industry models, including its strengths and limitations.

• Instance Of

  Q4167410