{"slug": "anthropic-debuts-claude-fable-5-2-and-mythos-5-2-models-as-ipo-nears", "title": "Anthropic debuts Claude Fable 5.2 and Mythos 5.2 models as IPO nears", "summary": "Anthropic released the Claude Fable 5.2 and Claude Mythos 5.2 models on Monday, saying both generate outputs 30% faster than their predecessors with improvements in coding, reasoning and vision. Fable 5.2 is available across Anthropic's platforms now at $8 per million input tokens and $40 per million output tokens, down from $10 and $50 for Fable 5.1, while Mythos 5.2 is restricted to organizations in Anthropic's Life Sciences and Cyber verification programs. The launch comes ahead of Anthropic's anticipated initial public offering later this month, with Wall Street's valuation target now between $1 trillion and $1.5 trillion, down from upwards of $2 trillion amid market turmoil around the AI trade.", "body_md": "Anthropic ([ANTH.PVT](https://finance.yahoo.com/quote/ANTH.PVT/)) introduced Claude Fable 5.2 and Claude Mythos 5.2 AI models on Monday.  \n\nThe company's most powerful models, Anthropic says Fable 5.2 and Mythos 5.2 generate outputs 30% faster than their predecessors and offer improvements across coding, reasoning, and vision.\n\nFable 5.2 is available across the company's platforms today. Mythos 5.2 is limited to organizations that are a part of Anthropic's Life Sciences and Cyber verification programs.\n\nThe company says Fable 5.2 will also be less expensive to run than Fable 5.1. Fable 5.2 will now cost $8 per million input tokens and $40 per million output tokens. Fable 5.1 cost $10 per million inputs and $50 per million outputs.\n\nTokens are a unit of measurement in AI that represent pieces of words or phrases you type or speak to a model and its responses.\n\nAI companies are engaged in a pricing war as models become more efficient and customers look for ways to save on AI services.\n\nIndustry experts say that over time enterprises will likely rely on a mix of closed-weights models like Anthropic's and open-weights AI models to meet their needs. The idea is to avoid being locked into a single model vendor, while also being able to reduce overall costs.\n\nFable 5.2 and Mythos 5.2 come ahead of Anthropic's anticipated [initial public offering](https://finance.yahoo.com/technology/article/anthropic-publicly-files-ipo-prospectus-noting-strong-revenue-growth-and-massive-spending-131807138.html) later this month. \n\n[But recent market turmoil](https://finance.yahoo.com/technology/article/anthropics-ipo-plans-run-up-against-a-battered-wall-street-192138177.html) around the AI trade could derail that. \n\nWhile Wall Street was initially targeting upwards of a $2 trillion valuation for Anthropic's debut, but that could [now end up between $1 trillion](https://finance.yahoo.com/technology/ai/article/anthropic-ipo-what-we-know-143321078.html) and $1.5 trillion. \n\nThere are also concerns that the company could end up pushing out its debut to a later date in hopes that market conditions will improve.\n\n*Email Daniel Howley at* *dhowley@yahoofinance.com**. Follow him on X at* *@DanielHowley* *or reach out on Signal or Telegram.* \n\n**Click here for the latest technology news that will impact the stock market**\n\n**Read the latest financial and business news from Yahoo Finance**", "url": "https://wpnews.pro/news/anthropic-debuts-claude-fable-5-2-and-mythos-5-2-models-as-ipo-nears", "canonical_source": "https://ca.finance.yahoo.com/news/anthropic-debuts-claude-fable-52-and-mythos-52-models-as-ipo-nears-190405087.html", "published_at": "2026-11-09 19:04:05+00:00", "updated_at": "2026-11-09 19:21:21.375466+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products", "ai-startups"], "entities": ["Anthropic", "Claude Fable 5.2", "Claude Mythos 5.2", "Claude Fable 5.1", "Daniel Howley", "Yahoo Finance"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/anthropic-debuts-claude-fable-5-2-and-mythos-5-2-models-as-ipo-nears", "markdown": "https://wpnews.pro/news/anthropic-debuts-claude-fable-5-2-and-mythos-5-2-models-as-ipo-nears.md", "text": "https://wpnews.pro/news/anthropic-debuts-claude-fable-5-2-and-mythos-5-2-models-as-ipo-nears.txt", "jsonld": "https://wpnews.pro/news/anthropic-debuts-claude-fable-5-2-and-mythos-5-2-models-as-ipo-nears.jsonld"}}