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Anthropic unveils new Fable, Mythos models as competition heats up ahead of IPO

By Thomson Reuters Nov 9, 2026 | 2:21 PM

Nov 9 (Reuters) – Anthropic on Monday unveiled two new AI models, Claude Fable 5.2 and Claude Mythos 5.2, as the ​OpenAI rival looks to strengthen its ‌position in the fast-growing AI market ahead of its planned IPO.

Here are more details:

• Claude Fable 5.2 targets coding, reasoning and AI agent tasks, ‌while ​Claude Mythos 5.2 targets ⁠approved cybersecurity and ⁠life-sciences research applications

• Anthropic said access to Claude Mythos 5.2 is restricted to organizations approved through its verification programs for cybersecurity ​and life-sciences research, while Claude Fable 5.2 is available more broadly

• Anthropic ⁠said the new models ⁠generate outputs up to 30% faster ​than their Claude 5.1 predecessors and communicate ​more clearly with users

• The company said ‌the models are priced at $8 per million input tokens and $40 per million output tokens, lower than the pricing for previous Fable ⁠and Mythos releases

• The launch follows Anthropic’s rollout of Claude Haiku 5.5 in October as the ⁠AI startup ‌broadens its product lineup ahead ⁠of a planned IPO

• Competition ​in ‌the AI industry has also ​intensified as ⁠OpenAI, Alphabet’s Google and Meta Platforms rapidly release new models focused on coding, reasoning and AI agents to attract developers and enterprise customers

(Reporting by Prathik Jayaprakash in Bengaluru; Editing by ​Leroy Leo)