Anthropic has released two new artificial intelligence models, Claude Fable 5.2 and Claude Mythos 5.2, both built on the same underlying model and aimed at coding, mathematics, cybersecurity, robotics and scientific research. The company says the models are designed for autonomous work lasting hours to days, and for coordination among multiple AI agents working together on a single task.
Fable 5.2 is intended for general users and includes safeguards in cybersecurity and biology. It is also available through Amazon Bedrock, the cloud computing platform operated by Amazon Web Services. Mythos 5.2 offers expanded access to vulnerability discovery and to work involving sensitive science, and its access is tightly controlled. Applicants must go through verification programmes, and the company has recently expanded its Life Sciences and Cyber Verification Programmes to widen access to Mythos for qualified users.
The company has put forward several capability claims. According to Anthropic, nearly 1,000 AI agents were used to formalise a proof of Fermat's Last Theorem, an effort that took about 30 hours with limited human involvement. The models are also reported to have designed three functioning electronic devices, to have produced gains in simulated robotics tasks, and to have contributed to theoretical physics work on black holes. These are the company's own claims, and no independent verification of them has been reported.
On pricing, the standard rate is $8 per million input tokens and $40 per million output tokens. An optional fast mode runs up to 2.5 times faster and costs $16 per million input tokens and $80 per million output tokens. Tokens are the units in which AI models measure the text they read and generate, so the rates determine what developers and businesses pay for usage.
The launch comes as Anthropic is reported to be preparing a public listing. The company has filed for a United States initial public offering with a planned listing on Nasdaq under the ticker "ANT", and reports suggest marketing could begin around November 10, 2026. The offering could rival the size of SpaceX's record debut. Reported valuation estimates of $1.1 to $1.3 trillion have been lowered from an earlier range of $1.5 to $2 trillion. The company reported revenue of $16.3 billion for the six months ended June 30, 2026.
The timing and final size of the IPO have not been confirmed, and the valuation figures remain reported estimates rather than finalised numbers. For users in India, the practical effect of the launch depends on access: the general-purpose Fable model is open to a wide range of users, while the more sensitive Mythos model remains limited to verified applicants.
Source: freepressjournal.in
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