Anthropic takes on OpenAI with faster, cheaper Claude AI models ahead of planned IPO Anthropic on Monday unveiled two new artificial intelligence models, Claude Fable 5.2 and Claude Mythos 5.2, as the OpenAI rival looks to strengthen its position in the rapidly expanding AI market ahead of its planned initial public offering (IPO).The company said the new models generate outputs up to 30 per cent faster than their Claude 5.1 predecessors and offer clearer communication with users. They will also be priced lower than previous Fable and Mythos releases, at $8 per million input tokens and $40 per million output tokens.Claude Fable 5.2 is designed for coding, reasoning and AI agent tasks, while Claude Mythos 5.2 is aimed at approved cybersecurity and life-sciences research applications.Anthropic said access to Mythos 5.2 would be restricted to organisations approved through its verification programmes for cybersecurity and life-sciences research. Fable 5.2, meanwhile, will be available more widely.The launch follows the company’s rollout of Claude Haiku 5.5 in October as it continues to expand its AI product portfolio ahead of its planned IPO.The latest release comes amid intensifying competition in the AI industry, with OpenAI, Alphabet’s Google and Meta Platforms rapidly introducing new models focused on coding, reasoning and AI agents to attract developers and enterprise customers.