ATLAS News · Artificial intelligence
Anthropic released new Mythos and Fable AI models on November 9, 2026, ahead of its expected Wall Street debut, according to Bloomberg and TechCrunch.
Anthropic unveiled new versions of its Mythos and Fable AI models, with Fable 5.2 set for release on Monday [2]. TechCrunch reports that the company lowered the price of Fable from $10 to $8 per million input tokens [3].
Anthropic said Fable 5.2 can tackle more difficult software engineering work, take on more hardware-related tasks such as controlling robots, and handle long-running projects. It is also designed to coordinate over 1,000 AI agents at a time [2].
Mythos 5.2 is the same model with fewer safeguards for cybersecurity and life sciences work. It is being rolled out to select organizations through a previously announced verification program [2].
Anthropic said the models are faster than prior versions and that Fable is less expensive [2]. It also said the new models show improvements in coding, reasoning and vision, and communicate more clearly with users [3].
TechCrunch reports that Fable 5.2 returns responses 30% faster across effort levels, and that faster inference serving is available for double the price. It describes this as Anthropic's first model release since a third-party METR report suggested the lab might be approaching recursive self-improvement, and says the report found internal models were speeding up Anthropic's AI progress by roughly 2x, although many uncertainties remain [3].
Sector relationship, not a demonstrated effect: ATLAS has no evidence that this story moves these companies' share prices. They appear for their activity in the sector and are shown with ATLAS data.
Leading supplier of AI accelerator chips used to train and run frontier AI models. · Technology
Major investor in Anthropic and a key cloud provider for its AI models through AWS. · Consumer Cyclical
Investor in Anthropic and a cloud and chip partner supplying compute for its AI models. · Communication Services
Competitor in frontier AI models and a major cloud provider in the generative AI market. · Technology
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This is a sector relationship, not a demonstrated effect: there is no evidence that this story moves these companies' share prices. The figures come from closes and may change.
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Bloomberg describes Mythos 5.2 as the same model as Fable 5.2 but with fewer safeguards for cybersecurity and life sciences work. It is being rolled out to select organizations through a verification program [2].
TechCrunch reports Anthropic lowered the cost of Fable from $10 to $8 per million input tokens [3].
Closing prices, fair value, probabilities, earnings and dividends: ATLAS own data as of November 9, 2026. How we calculate fair value.
Information, not advice. This content is informational and is not an investment recommendation or an offer to buy or sell securities. ATLAS estimates come from statistical models using public data, can be wrong, and past performance does not guarantee future results. Disclaimer
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