Anthropic releases Claude Fable 5.2 and Claude Mythos 5.2 at a lower price

In an announcement published on 9 November 2026, Anthropic introduced Claude Fable 5.2 and Claude Mythos 5.2. According to the company, both use the same underlying model and improve on earlier versions in coding, reasoning and vision. Fable 5.2 is open to all users and comes with extra safeguards against misuse in cybersecurity and biology.

• Anthropic says the new models generate output up to 30 percent faster than Fable 5.1 and Mythos 5.1, priced at 8 dollars per million input tokens and 40 dollars per million output tokens.
• An optional fast mode speeds up token generation by up to 2.5 times; it costs 16 dollars per million input tokens and 80 dollars per million output tokens.
• Fable 5.2 is available on all platforms, including Amazon Web Services, Google Cloud and Microsoft Azure.
• In the company's early testing, the number of requests blocked by safety classifiers fell by about 55 percent compared with Fable 5.1.

Why it matters

Because the model launched on the major cloud platforms on the same day, companies in Türkiye that already run on AWS, Google Cloud or Azure can try it within their existing accounts and billing. The lower price may also change the cost picture for software development and for workflows built around long documents. Anthropic also said that Enterprise Frontier Safeguards, which runs safety monitoring on prompts and responses stored in the customer's own infrastructure, is in private beta for enterprise customers; companies with strict data retention rules may want to look at this option separately.

According to Anthropic, cybersecurity professionals can apply for Mythos 5.2 access through the Cyber Verification Program and life sciences researchers through the Life Sciences Verification Program. The company said eligible customers can keep using the new models with zero data retention, while other customers have 30-day retention for safety monitoring.