(Reuters) -Artificial intelligence startup Anthropic has overhauled its smallest AI model, Haiku, as companies increasingly opt for AI systems that are nearly as capable as the most advanced tools – but come at a fraction of the cost. Anthropic said on Wednesday that the updated model, called Haiku 4.5, is about one-third the cost of Sonnet 4, one of its medium-sized models, and one-fifteenth the cost of its most advanced offering, Opus. The new Haiku model performs as well or better than Sonnet 4 on a range of tasks, including coding.