SAN FRANCISCO, Nov 10 — Anthropic announced yesterday that it would release updated versions of two of its most powerful artificial intelligence (AI) models as the company prepares for a highly anticipated IPO this month.

The new models, Fable 5.2 and Mythos 5.2, can perform up to 30 per cent faster than previous versions, particularly on complex tasks such as coding, while costing 20 per cent less, the company said.

Both are built on the same underlying model. Fable 5.2 has safeguards that block most cybersecurity and biology tasks, which lets Anthropic offer it to all users.

Mythos 5.2 has fewer of those restrictions and is available only to vetted organisations working in cybersecurity or biomedical research.