Anthropic has released Claude Fable 5.2 and Claude Mythos 5.2, two variants of the same underlying model with different safety guardrails. Fable includes cybersecurity and biological safeguards and is open to all users, while Mythos requires application through Anthropic's cybersecurity or life sciences verification program. The new models deliver improvements in coding, reasoning, and vision capabilities, with output speeds up to 30% faster than version 5.1. API pricing drops 20% to $8 per million input tokens and $40 per million output tokens, down from $10 and $50 respectively for Fable 5.1. Anthropic reported that Fable 5.2 scored 49.1% on the FrontierCode 2.0 evaluation at Xhigh effort — the highest among all released models it has tested. Fable 5.2 is available immediately on the Claude platform as well as AWS, Google Cloud, and Microsoft Azure.